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| Title | Size | Download |
|---|---|---|
| 08-IPv6 Basics Commands | 168.94 KB |
1 IPv6 Basics Configuration Commands
IPv6 Basics Configuration Commands
ipv6 icmpv6 multicast-echo-reply enable
ipv6 nd autoconfig managed-address-flag
ipv6 neighbors max-learning-num
l Support of the H3C WA series WLAN access points (APs) for commands may vary by AP model. For more information, see Feature Matrix.
l The interface types and the number of interfaces vary by AP model.
l The models listed in this document are not applicable to all regions. Please consult your local sales office for the models applicable to your region.
Support for the IPv6 basics configuration commands depends on the AP model.
IPv6 Basics Configuration Commands
display ipv6 fib
Syntax
display ipv6 fib [ ipv6-address ]
View
Any view
Default Level
1: Monitor level
Parameters
ipv6-address: Displays the IPv6 FIB entries for an IPv6 address.
Description
Use the display ipv6 fib command to display IPv6 FIB entries. If no argument is specified, all IPv6 FIB entries will be displayed.
The AP looks up a matching IPv6 FIB entry for forwarding an IPv6 packet.
Examples
# Display all IPv6 FIB entries.
<Sysname> display ipv6 fib
FIB Table:
Total number of Routes : 1
Flag:
U:Useable G:Gateway H:Host B:Blackhole D:Dynamic S:Static
Destination: ::1 PrefixLength : 128
NextHop : ::1 Flag : HU
Label : NULL Tunnel ID : 0
TimeStamp : Date- 7/14/2007, Time- 15:17:15
Interface : InLoopBack0
Table 1-1 display ipv6 fib command output description
|
Field |
Description |
|
Total number of Routes |
Total number of routes in the FIB |
|
Destination |
Destination address |
|
PrefixLength |
Prefix length of the destination address |
|
NextHop |
Next hop |
|
Flag |
Route flag: l U — Usable route l G — Gateway route l H — Host route l B — Black hole route l D — Dynamic route l S — Static route |
|
Label |
Label |
|
Tunnel ID |
ID of a tunnel |
|
TimeStamp |
Generation time of a FIB entry |
|
Interface |
Outgoing interface |
display ipv6 fibcache
Syntax
display ipv6 fibcache
View
Any view
Default Level
1: Monitor level
Parameters
None
Description
Use the display ipv6 fibcache command to display the total number of routes in the IPv6 FIB cache.
Examples
# Display the total number of routes in the IPv6 FIB cache.
<Sysname> display ipv6 fibcache
FIB Cache:
Total number of Routes : 0
display ipv6 interface
Syntax
display ipv6 interface [ interface-type [ interface-number ] ] [ verbose ]
View
Any view
Default Level
1: Monitor level
Parameters
interface-type: Interface type.
interface-number: Interface number.
verbose: Displays detailed IPv6 information of an interface.
Description
Use the display ipv6 interface command to display the IPv6 information of an interface for which an IPv6 address can be configured.
If interface-type interface-number is not specified, the IPv6 information of all interfaces for which IPv6 addresses can be configured is displayed; if only interface-type is specified, the IPv6 information of the interfaces of the specified type for which IPv6 addresses can be configured is displayed; if the interface-type interface-number is specified, the IPv6 information of the specified interface is displayed.
Examples
# Display the IPv6 information of VLAN-interface 2.
<Sysname> display ipv6 interface vlan-interface 2 verbose
Vlan-interface2 current state :UP
Line protocol current state :UP
IPv6 is enabled, link-local address is FE80::1234:56FF:FE65:4322
Global unicast address(es):
2001::1, subnet is 2001::/64
10::1234:56FF:FE65:4322, subnet is 10::/64 [AUTOCFG]
[valid lifetime 4641s/preferred lifetime 4637s]
Joined group address(es):
FF02::1:FF00:1
FF02::1:FF65:4322
FF02::2
FF02::1
MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND retransmit interval is 1000 milliseconds
Hosts use stateless autoconfig for addresses
IPv6 Packet statistics:
InReceives: 0
InTooShorts: 0
InTruncatedPkts: 0
InHopLimitExceeds: 0
InBadHeaders: 0
InBadOptions: 0
ReasmReqds: 0
ReasmOKs: 0
InFragDrops: 0
InFragTimeouts: 0
OutFragFails: 0
InUnknownProtos: 0
InDelivers: 0
OutRequests: 4
OutForwDatagrams: 0
InNoRoutes: 0
InTooBigErrors: 0
OutFragOKs: 0
OutFragCreates: 0
InMcastPkts: 0
InMcastNotMembers: 0
OutMcastPkts: 4
InAddrErrors: 0
InDiscards: 0
OutDiscards: 0
Table 1-2 display ipv6 interface command output description
|
Field |
Description |
|
Vlan-interface2 current state |
Physical state of the interface: l Administratively DOWN: Indicates that the VLAN interface is administratively down; that is, the interface is shut down using the shutdown command. l DOWN: Indicates that the VLAN interface is administratively up but its physical state is down; that is, no ports in the VLAN are up, which may be caused by a connection or link failure. l UP: Indicates that the administrative and physical states of the VLAN interface are both up. |
|
Line protocol current state |
Link layer protocol state of the interface: l DOWN: Indicates that the link layer protocol state of the VLAN interface is down, generally because no IP address is configured. l UP: Indicates that the link layer protocol state of the VLAN interface is up. |
|
IPv6 is enabled |
IPv6 packet forwarding state of the interface (after an IPv6 address is configured for an interface, IPv6 is automatically enabled on it; IPv6 packet forwarding is enabled in the example) |
|
link-local address |
Link-local address configured for the interface |
|
Global unicast address(es) |
Aggregatable global unicast address(es) configured for the interface |
|
valid lifetime |
Valid lifetime of the global unicast address |
|
preferred lifetime |
Preferred lifetime of the global unicast address |
|
Joined group address(es) |
Address(es) of multicast group(s) that the interface has joined |
|
MTU |
Maximum transmission unit of the interface |
|
ND DAD is enabled, number of DAD attempts |
Number of DAD attempts (DAD is enabled). l If DAD is enabled, the number of neighbor request messages is also displayed (configured by using the ipv6 nd dad attempts command) l If DAD is disabled, “ND DAD is disabled” is displayed. (You can set the number of neighbor request messages for DAD to 0 to disable this function.) |
|
ND reachable time |
Neighbor reachable time |
|
ND retransmit interval |
Interval for retransmitting a neighbor solicitation (NS) message |
|
Hosts use stateless autoconfig for addresses |
Hosts use stateless autoconfiguration mode to acquire IPv6 addresses |
|
InReceives |
All IPv6 packets received by the interface, including all types of error packets. |
|
InTooShorts |
Received IPv6 packets that are too short, with a length less than 40 bytes, for example. |
|
InTruncatedPkts |
Received IPv6 packets with a length less than that specified in the packets |
|
InHopLimitExceeds |
Received IPv6 packets with a hop count exceeding the limit |
|
InBadHeaders |
Received IPv6 packets with bad basic headers |
|
InBadOptions |
Received IPv6 packets with bad extension headers |
|
ReasmReqds |
Received IPv6 fragments |
|
ReasmOKs |
Received, reassembled IPv6 packets rather than IPv6 fragments |
|
InFragDrops |
IPv6 fragments discarded due to certain error |
|
InFragTimeouts |
IPv6 fragments discarded because the interval for which they had stayed in the system buffer exceeded the specified period |
|
OutFragFails |
Packets failed in fragmentation on the outbound interface |
|
InUnknownProtos |
Received IPv6 packets with unknown or unsupported protocol types |
|
InDelivers |
Received IPv6 packets that were delivered to application layer protocols (such as ICMPv6, TCP, and UDP) |
|
OutRequests |
Local IPv6 packets sent by IPv6 application protocols |
|
OutForwDatagrams |
Packets forwarded by the outbound interface. |
|
InNoRoutes |
IPv6 packets that were discarded because no matched route can be found |
|
InTooBigErrors |
IPv6 packets that were discarded because they exceeded the PMTU |
|
OutFragOKs |
Packets that were fragmented on the outbound interface |
|
OutFragCreates |
Number of packet fragments after fragmentation on the outbound interface |
|
InMcastPkts |
IPv6 multicast packets received on the interface |
|
InMcastNotMembers |
Incoming IPv6 multicast packets that were discarded because the interface did not belong to the corresponding multicast groups |
|
OutMcastPkts |
IPv6 multicast packets sent by the interface |
|
InAddrErrors |
IPv6 packets that were discarded due to invalid destination addresses |
|
InDiscards |
Received IPv6 packets that were discarded due to resource problems rather than packet content errors |
|
OutDiscards |
Sent packets that were discarded due to resource problems rather than packet content errors |
# Display the brief IPv6 information of all interfaces for which IPv6 addresses can be configured.
<Sysname> display ipv6 interface
*down: administratively down
(s): spoofing
Interface Physical Protocol IPv6 Address
Vlan-interface1 down down Unassigned
Vlan-interface2 up up 2001::1
Vlan-interface100 up down Unassigned
Table 1-3 display ipv6 interface command output description
|
Field |
Description |
|
*down: administratively down |
The interface is down, that is, the interface is closed by using the shutdown command. |
|
(s): spoofing |
Spoofing attribute of the interface, that is, the link protocol state of the interface is up, but the link does not exist, or the link is established on demand, instead of being permanent. |
|
Interface |
Name of the interface |
|
Physical |
Physical state of the interface: l *down: Indicates that the VLAN interface is administratively down; that is, the interface is shut down using the shutdown command. l down: Indicates that the VLAN interface is administratively up but its physical state is down; that is, no port in the VLAN is up, which may be caused by a connection or link failure. l up: Indicates that the administrative and physical states of the VLAN interface are both up. |
|
Protocol |
Link layer protocol state of the interface: l down: Indicates that the network layer protocol state of the VLAN interface is down, generally because no IP address is configured. l up: Indicates that the network layer protocol state of the VLAN interface is up. |
|
IPv6 Address |
IPv6 address of the interface. Only the first of configured IPv6 addresses is displayed. (If no address is configured for the interface, “Unassigned” will be displayed.) |
display ipv6 neighbors
Syntax
display ipv6 neighbors { ipv6-address | all | dynamic | interface interface-type interface-number | static | vlan vlan-id } [ | { begin | exclude | include } regular-expression ]
View
Any view
Default Level
1: Monitor level
Parameters
ipv6-address: IPv6 address whose neighbor information is to be displayed.
all: Displays information of all neighbors, including neighbors acquired dynamically and configured statically.
dynamic: Displays information of all neighbors acquired dynamically.
static: Displays information of all neighbors configured statically.
interface interface-type interface-number: Displays information of the neighbors of a specified interface.
vlan vlan-id: Displays information of the neighbors of a specified VLAN whose ID ranges from 1 to 4094.
|: Uses a regular expression to match neighbor entries. For detailed information about regular expression, see CLI in the Fundamentals Configuration Guide.
begin: Displays a specific neighbor entry and all the neighbor entries following it. The specific neighbor entry must match the specified regular expression.
include: Displays the neighbor entries matching the specified regular expression.
exclude: Displays the neighbor entries not matching the specified regular expression.
regular-expression: A case-sensitive string of 1 to 256 characters.
Description
Use the display ipv6 neighbors command to display neighbor information.
You can use the reset ipv6 neighbors command to clear specific IPv6 neighbor information.
Related commands: ipv6 neighbor and reset ipv6 neighbors.
Examples
# Display all neighbor information.
<Sysname> display ipv6 neighbors all
Type: S-Static D-Dynamic
IPv6 Address Link-layer VID Interface State T Age
FE80::200:5EFF:FE32:B800 0000-5e32-b800 N/A Eth1/0/1 REACH S -
Table 1-4 display ipv6 neighbors command output description
|
Field |
Description |
|
IPv6 Address |
IPv6 address of a neighbor |
|
Link-layer |
Link layer address (MAC address of a neighbor) |
|
VID |
VLAN to which the interface connected with a neighbor belongs |
|
Interface |
Interface connected with a neighbor |
|
State |
State of a neighbor, including: l INCMP: The address is being resolved. The link layer address of the neighbor is unknown. l REACH: The neighbor is reachable. l STALE: The reachability of the neighbor is unknown. The device will not verify the reachability any longer unless data is sent to the neighbor. l DELAY: The reachability of the neighbor is unknown. The device sends an NS message after a delay. l PROBE: The reachability of the neighbor is unknown. The device sends an NS message to verify the reachability of the neighbor. |
|
T |
Type of neighbor information, including static configuration and dynamic acquisition. |
|
Age |
For a static entry, a hyphen “-“ is displayed. For a dynamic entry, the reachable time (in seconds) elapsed is displayed, and if it is never reachable, “#” is displayed (for a neighbor acquired dynamically). |
display ipv6 neighbors count
Syntax
display ipv6 neighbors { all | dynamic | interface interface-type interface-number | static | vlan vlan-id } count
View
Any view
Default Level
1: Monitor level
Parameters
all: Displays the total number of all neighbor entries, including neighbor entries acquired dynamically and configured statically.
dynamic: Displays the total number of all neighbor entries acquired dynamically.
static: Displays the total number of neighbor entries configured statically.
interface interface-type interface-number: Displays the total number of neighbor entries of a specified interface.
vlan vlan-id: Displays the total number of neighbor entries of a specified VLAN whose ID ranges from 1 to 4094.
Description
Use the display ipv6 neighbors count command to display the total number of neighbor entries satisfying the specified condition.
Examples
# Display the total number of neighbor entries acquired dynamically.
<Sysname> display ipv6 neighbors dynamic count
Total dynamic entry(ies): 2
display ipv6 pathmtu
Syntax
display ipv6 pathmtu { ipv6-address | all | dynamic | static }
View
Any view
Default Level
1: Monitor level
Parameters
ipv6-address: IPv6 address whose PMTU information is to be displayed.
all: Displays all PMTU information.
dynamic: Displays all dynamic PMTU information.
static: Displays all static PMTU information.
Description
Use the display ipv6 pathmtu command to display the PMTU information of IPv6 addresses.
Examples
# Display all PMTU information.
<Sysname> display ipv6 pathmtu all
IPv6 Destination Address ZoneID PathMTU Age Type
fe80::12 0 1300 40 Dynamic
2222::3 0 1280 - Static
Table 1-5 display ipv6 pathmtu command output description
|
Field |
Description |
|
IPv6 Destination Address |
Destination IPv6 address |
|
ZoneID |
ID of address zone, currently invalid |
|
PathMTU |
PMTU of an IPv6 address |
|
Age |
Time for a PMTU to live. For a static PMTU, a hyphen “-“ is displayed. |
|
Type |
Indicates the PMTU is dynamically negotiated or statically configured. |
display ipv6 socket
Syntax
display ipv6 socket [ socktype socket-type ] [ task-id socket-id ]
View
Any view
Default Level
1: Monitor level
Parameters
socktype socket-type: Displays the socket information of this type. The socket type is in the range of 1 to 3. The value “1” represents a TCP socket, “2” a UDP socket, and “3” a raw IP socket.
task-id: Displays the socket information of the task. The task ID is in the range 1 to 150..
socket-id: Displays the information of the socket. The socket ID is in the range 0 to 3072.
Description
Use the display ipv6 socket command to display socket information.
With no parameter specified, this command displays the information about all the sockets; with only the socket type specified, the command displays the information about sockets of the specified type; with the socket type, task ID and socket ID specified, the command displays the information about the specified socket.
Examples
# Display the information of all sockets.
<Sysname> display ipv6 socket
SOCK_STREAM:
Task = VTYD(14), socketid = 4, Proto = 6,
LA = ::->22, FA = ::->0,
sndbuf = 8192, rcvbuf = 8192, sb_cc = 0, rb_cc = 0,
socket option = SO_ACCEPTCONN SO_REUSEPORT SO_SENDVPNID,
socket state = SS_PRIV SS_ASYNC
Task = VTYD(14), socketid = 3, Proto = 6,
LA = ::->23, FA = ::->0,
sndbuf = 8192, rcvbuf = 8192, sb_cc = 0, rb_cc = 0,
socket option = SO_ACCEPTCONN SO_REUSEPORT SO_SENDVPNID,
socket state = SS_PRIV SS_ASYNC
SOCK_DGRAM:
Task = AGNT(51), socketid = 2, Proto = 17,
LA = ::->161, FA = ::->0,
sndbuf = 9216, rcvbuf = 42080, sb_cc = 0, rb_cc = 0,
socket option = SO_REUSEPORT,
socket state = SS_PRIV SS_NBIO SS_ASYNC
Task = TRAP(52), socketid = 2, Proto = 17,
LA = ::->1024, FA = ::->0,
sndbuf = 9216, rcvbuf = 42080, sb_cc = 0, rb_cc = 0,
socket option =,
socket state = SS_PRIV
SOCK_RAW:
Task = ROUT(86), socketid = 5, Proto = 89,
LA = ::, FA = ::,
sndbuf = 262144, rcvbuf = 262144, sb_cc = 0, rb_cc = 0,
socket option = SO_REUSEADDR,
socket state = SS_PRIV SS_ASYNC
Table 1-6 display ipv6 socket command output description
|
Field |
Description |
|
SOCK_STREAM |
TCP socket |
|
SOCK_DGRAM |
UDP socket |
|
SOCK_RAW |
Raw IP socket |
|
Task |
Task name and ID of the created socket |
|
socketid |
ID assigned by the kernel to the created socket |
|
Proto |
Protocol ID |
|
LA |
Local address and local port number |
|
FA |
Remote address and remote port number |
|
sndbuf |
Size of the send buffer |
|
rcvbuf |
Size of the receive buffer |
|
sb_cc |
Number of bytes sent by the send buffer |
|
rb_cc |
Number of bytes received by the receive buffer |
|
socket option |
Socket option set by the application |
|
socket state |
State of the socket |
display ipv6 statistics
Syntax
display ipv6 statistics
View
Any view
Default Level
1: Monitor level
Parameters
None
Description
Use the display ipv6 statistics command to display statistics of IPv6 packets and ICMPv6 packets.
You can use the reset ipv6 statistics command to clear all IPv6 and ICMPv6 packet statistics.
Examples
# Display the statistics of IPv6 packets and ICMPv6 packets.
<Sysname> display ipv6 statistics
IPv6 Protocol:
Sent packets:
Total: 0
Local sent out: 0 forwarded: 0
raw packets: 0 discarded: 0
routing failed: 0 fragments: 0
fragments failed: 0
Received packets:
Total: 0
local host: 0 hopcount exceeded: 0
format error: 0 option error: 0
protocol error: 0 fragments: 0
reassembled: 0 reassembly failed: 0
reassembly timeout: 0
ICMPv6 protocol:
Sent packets:
Total: 0
Unreached: 0 too big: 0
hopcount exceeded: 0 reassembly timeout: 0
parameter problem: 0
echo request: 0 echo replied: 0
neighbor solicit: 0 neighbor advert: 0
router solicit: 0 router advert: 0
redirected: 0
Send failed:
ratelimited: 0 other errors: 0
Received packets:
Total: 0
checksum error: 0 too short: 0
bad code: 0
unreached: 0 too big: 0
hopcount exceeded: 0 reassembly timeout: 0
parameter problem: 0 unknown error type: 0
echoed: 0 echo replied: 0
neighbor solicit: 0 neighbor advert: 0
router solicit: 0 router advert: 0
redirected: 0 router renumbering: 0
unknown info type: 0
Deliver failed:
bad length: 0 ratelimited: 0
Table 1-7 display ipv6 statistics command output description
|
Field |
Description |
|
IPv6 Protocol: |
Statistics of IPv6 packets |
|
Sent packets: Total: 0 Local sent out: 0 forwarded: 0 raw packets: 0 discarded: 0 routing failed: 0 fragments: 0 fragments failed: 0 |
Statistics of sent IPv6 packets, including: l Total number of packets sent and forwarded locally l Number of packets sent locally l Number of forwarded packets l Number of packets sent via raw socket l Number of discarded packets l Number of packets failing to be routed l Number of sent fragment packets l Number of fragments failing to be sent |
|
Received packets: Total: 0 local host: 0 hopcount exceeded: 0 format error: 0 option error: 0 protocol error: 0 fragments: 0 reassembled: 0 reassembly failed: 0 reassembly timeout: 0 |
Statistics of received IPv6 packets, including l Total number of received packets l Number of packets received locally l Number of packets exceeding the hop limit l Number of packets in an incorrect format l Number of packets with incorrect options l Number of packets with incorrect protocol l Number of received fragment packets l Number of reassembled packets l Number of packets failing to be reassembled l Number of packets whose reassembly times out |
|
ICMPv6 protocol: |
Statistics of ICMPv6 packets |
|
Sent packets: Total: 0 unreached: 0 too big: 0 hopcount exceeded: 0 reassembly timeout: 0 parameter problem: 0 echo request: 0 echo replied: 0 neighbor solicit: 0 neighbor advert: 0 router solicit: 0 router advert 0 redirected: 0 Send failed: ratelimited: 0 other errors: 0 |
Statistics of sent ICMPv6 packets, including l Total number of sent packets l Number of packets whose destination is unreachable l Number of too large packets l Number of packets exceeding the hop limit l Number of packets whose fragmentation and reassembly times out l Number of packets with parameter errors l Number of request packets l Number of response packets l Number of neighbor solicitation packets l Number of neighbor advertisement packets l Number of router solicit packets l Number of router advertisement packets l Number of redirected packets l Number of packets failing to be sent because of rate limitation l Number of packets with other errors |
|
Received packets: Total: 0 checksum error: 0 too short: 0 bad code 0 unreached: 0 too big: 0 hopcount exceeded: 0 reassembly timeout: 0 parameter problem: 0 unknown error type: 0 echoed: 0 echo replied: 0 neighbor solicit: 0 neighbor advert: 0 router solicit: 0 router advert 0 redirected: 0 router renumbering 0 unknown info type: 0 Deliver failed: bad length: 0 ratelimited: 0 |
Statistics of received ICMPv6 packets, including l Total number of received packets l Number of packets with checksum errors l Number of too small packets l Number of packets with error codes l Number of packets whose destination is unreachable l Number of too large packets l Number of packets exceeding the hop limit l Number of packets whose fragmentation and reassembly times out l Number of packets with parameter errors l Number of packets with unknown errors l Number of request packets l Number of response packets l Number of neighbor solicitation messages l Number of neighbor advertisement packets l Number of router solicitation packets l Number of router advertisement packets l Number of redirected packets l Number of packets recounted by the router l Number of unknown type of packets l Number of packets with a incorrect size l Number of packets failing to be received because of rate limitation |
display tcp ipv6 statistics
Syntax
display tcp ipv6 statistics
View
Any view
Default Level
1: Monitor level
Parameters
None
Description
Use the display tcp ipv6 statistics command to display IPv6 TCP connection statistics.
You can use the reset tcp ipv6 statistics command to clear statistics of all IPv6 TCP packets.
Examples
# Display the statistics of IPv6 TCP connections.
<Sysname> display tcp ipv6 statistics
Received packets:
Total: 0
packets in sequence: 0 (0 bytes)
window probe packets: 0, window update packets: 0
checksum error: 0, offset error: 0, short error: 0
duplicate packets: 0 (0 bytes), partially duplicate packets: 0 (0 bytes)
out-of-order packets: 0 (0 bytes)
packets with data after window: 0 (0 bytes)
packets after close: 0
ACK packets: 0 (0 bytes)
duplicate ACK packets: 0, too much ACK packets: 0
Sent packets:
Total: 0
urgent packets: 0
control packets: 0 (including 0 RST)
window probe packets: 0, window update packets: 0
data packets: 0 (0 bytes) data packets retransmitted: 0 (0 bytes)
ACK only packets: 0 (0 delayed)
Retransmitted timeout: 0, connections dropped in retransmitted timeout: 0
Keepalive timeout: 0, keepalive probe: 0, Keepalive timeout, so connections disconnected : 0
Initiated connections: 0, accepted connections: 0, established connections: 0
Closed connections: 0 (dropped: 0, initiated dropped: 0)
Table 1-8 display tcp ipv6 statistics command output description
|
Field |
Description |
|
Received packets: Total: 0 packets in sequence: 0 (0 bytes) window probe packets: 0 window update packets: 0 checksum error: 0 offset error: 0 short error: 0
duplicate packets: 0 (0 bytes), partially duplicate packets: 0 (0 bytes) out-of-order packets: 0 (0 bytes) packets with data after window: 0 (0 bytes) packets after close: 0
ACK packets: 0 (0 bytes) duplicate ACK packets: 0 too much ACK packets: 0 |
Statistics of received packets, including l Total number of received packets l Number of packets received in sequence l Number of window probe packets l Number of window size update packets l Number of packets with checksum errors l Number of packets with offset errors l Number of packets whose total length is less than specified by the packet header l Number of duplicate packets l Number of partially duplicate packets l Number of out-of-order packets l Number of packets exceeding the size of the receiving window l Number of packets received after the connection is closed l Number of ACK packets l Number of duplicate ACK packets l Number of excessive ACK packets |
|
Sent packets: Total: 0 urgent packets: 0 control packets: 0 (including 0 RST) window probe packets: 0 window update packets: 0
data packets: 0 (0 bytes) data packets retransmitted: 0 (0 bytes) ACK only packets: 0 (0 delayed) |
Statistics of sent packets, including l Total number of packets l Number of packets containing an urgent indicator l Number of control packets l Number of window probe packets l Number of window update packets l Number of data packets l Number of retransmitted packets l Number of ACK packets |
|
Retransmitted timeout |
Number of packets whose retransmission times out |
|
connections dropped in retransmitted timeout |
Number of connections dropped because of retransmission timeout |
|
Keepalive timeout |
Number of keepalive timeouts |
|
keepalive probe |
Number of keepalive probes |
|
Keepalive timeout, so connections disconnected |
Number of connections dropped because of keepalive response timeout |
|
Initiated connections |
Number of initiated connections |
|
accepted connections |
Number of accepted connections |
|
established connections |
Number of established connections |
|
Closed connections |
Number of closed connections |
|
dropped |
Number of dropped connections (after SYN is received from the peer) |
|
initiated dropped |
Number of initiated but dropped connections (before SYN is received from the peer) |
display tcp ipv6 status
Syntax
display tcp ipv6 status
View
Any view
Default Level
1: Monitor level
Parameters
None
Description
Use the display tcp ipv6 status command to display the IPv6 TCP connection status, including the IPv6 TCP control block address, local and peer IPv6 addresses, and status of the IPv6 TCP connection.
Examples
# Display the IPv6 TCP connection status.
<Sysname> display tcp ipv6 status
TCP6CB Local Address Foreign Address State
045d8074 ::->21 ::->0 Listening
Table 1-9 display tcp ipv6 status command output description
|
Field |
Description |
|
TCP6CB |
IPv6 address of the TCP control block (hexadecimal) |
|
Local Address |
Local IPv6 address |
|
Foreign Address |
Remote IPv6 address |
|
State |
IPv6 TCP connection status, including l Closed l Listening l Syn_Sent l Syn_Rcvd l Established l Close_Wait l Fin_Wait1 l Closing l Last_Ack l Fin_Wait2 l Time_Wait |
display udp ipv6 statistics
Syntax
display udp ipv6 statistics
View
Any view
Default Level
1: Monitor level
Parameters
None
Description
Use the display udp ipv6 statistics command to display statistics of IPv6 UDP packets.
You can use the reset udp ipv6 statistics command to clear the statistics of all IPv6 UDP packets.
Examples
# Display statistics information of IPv6 UDP packets.
<Sysname> display udp ipv6 statistics
Received packets:
Total: 0
checksum error: 0
shorter than header: 0, data length larger than packet: 0
unicast(no socket on port): 0
broadcast/multicast(no socket on port): 0
not delivered, input socket full: 0
input packets missing pcb cache: 0
Sent packets:
Total: 0
Table 1-10 display udp ipv6 statistics command output description
|
Field |
Description |
|
Total |
Total number of received/sent packets |
|
checksum error |
Total number of packets with a checksum error |
|
shorter than header |
Total number of IPv6 UDP packets whose total length is less than specified by the packet header |
|
data length larger than packet |
Total number of packets whose data length exceeds that specified by the packet header |
|
unicast(no socket on port) |
Total number of unicast packets without any socket received on a port |
|
broadcast/multicast(no socket on port) |
Total number of broadcast/multicast packets without any socket received on a port |
|
not delivered, input socket full |
Number of packets not handled because of the receive buffer being full |
|
input packet missing pcb cache |
Number of packets failing to match the Protocol Control Block (PCB) cache |
ipv6
Syntax
ipv6
undo ipv6
View
System view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 command to enable the IPv6 packet forwarding function.
Use the undo ipv6 command to disable the IPv6 packet forwarding function.
By default, the IPv6 packet forwarding function is disabled.
Examples
# Enable the IPv6 packet forwarding function.
<Sysname> system-view
[Sysname] ipv6
ipv6 address
Syntax
ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length }
undo ipv6 address [ ipv6-address prefix-length | ipv6-address/prefix-length ]
View
Interface view
Default Level
2: System level
Parameters
ipv6-address: IPv6 address.
prefix-length: Prefix length of an IPv6 address, in the range 1 to 128.
Description
Use the ipv6 address command to configure an IPv6 site-local address or aggregatable global unicast address for an interface.
Use the undo ipv6 address command to remove the IPv6 address from the interface.
By default, no site-local address or global unicast address is configured for an interface.
Note that except the link-local address automatically configured and the one generated through stateless autoconfiguration, all IPv6 addresses will be removed from the interface if you carry out the undo ipv6 address command without any parameter specified.
Examples
# Set the aggregatable global IPv6 unicast address of VLAN-interface 100 to 2001::1 with prefix length 64.
Method I:
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 address 2001::1/64
Method II:
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 address 2001::1 64
ipv6 address auto
Syntax
ipv6 address auto
undo ipv6 address auto
View
Interface view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 address auto command to enable the stateless address autoconfiguration function on an interface. With this function enabled, the interface can automatically generate a global unicast address.
Use the undo ipv6 address auto command to disable this function.
The stateless address autoconfiguration function is disabled by default.
After an aggregatable global unicast address is generated through stateless autoconfiguration, a link-local address is generated automatically, which can be removed only by executing the undo ipv6 address auto command.
Examples
# Enable stateless address autoconfiguration function on VLAN-interface 100.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 address auto
ipv6 address auto link-local
Syntax
ipv6 address auto link-local
undo ipv6 address auto link-local
View
Interface view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 address auto link-local command to automatically generate a link-local address for an interface.
Use the undo ipv6 address auto link-local command to remove the automatically generated link-local address for the interface.
By default, a link-local address will automatically be generated after a site-local or global IPv6 unicast address is configured for an interface.
Note that:
l After an IPv6 site-local address or aggregatable global unicast address is configured for an interface, a link-local address is generated automatically. The automatically generated link-local address is the same as the one generated by using the ipv6 address auto link-local command.
l The undo ipv6 address auto link-local command can only remove the link-local addresses generated through the ipv6 address auto link-local command. Therefore, after the undo ipv6 address auto link-local command is used on an interface that has an IPv6 site-local address or aggregatable global unicast address configured, the interface still has a link-local address. If the interface has no IPv6 site-local address or aggregatable global unicast address configured, it will have no link-local address.
l Manual assignment takes precedence over automatic generation. That is, if you first adopt automatic generation and then manual assignment, the manually assigned link-local address will overwrite the automatically generated one. If you first adopt manual assignment and then automatic generation, the automatically generated link-local address will not take effect and the link-local address of an interface is still the manually assigned one. If you delete the manually assigned address, the automatically generated link-local address is validated. For manually assignment of an IPv6 link-local address, see the ipv6 address link-local command.
Examples
# Configure VLAN-interface 100 to automatically generate a link-local address.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 address auto link-local
ipv6 address eui-64
Syntax
ipv6 address ipv6-address/prefix-length eui-64
undo ipv6 address ipv6-address/prefix-length eui-64
View
Interface view
Default Level
2: System level
Parameters
ipv6-address/prefix-length: IPv6 address and IPv6 prefix. The ipv6-address and prefix-length arguments jointly specify the prefix of an IPv6 address in the EUI-64 format.
Description
Use the ipv6 address eui-64 command to configure a site-local address or global unicast address in the EUI-64 format for an interface.
Use the undo ipv6 address eui-64 command to remove the configured site-local address or global unicast address in the EUI-64 format for the interface.
By default, no site-local or global unicast address in EUI-64 format is configured for an interface.
An EUI-64 IPv6 address is generated based on the specified prefix and the interface identifier generated automatically by the interface and can be displayed by using the display ipv6 interface command.
Note that you cannot specify the prefix length of an IPv6 address in the EUI-64 format to be greater than 64.
Examples
# Configure an IPv6 address in EUI-64 format for VLAN-interface 100. The prefix length of the address is the same as that of 2001::1/64, and the interface ID is generated based on the MAC address of the AP.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 address 2001::1/64 eui-64
ipv6 address link-local
Syntax
ipv6 address ipv6-address link-local
undo ipv6 address ipv6-address link-local
View
Interface view
Default Level
2: System level
Parameters
ipv6-address: IPv6 link-local address. The first ten bits of an address must be 1111111010 (binary), that is, the first group of hexadecimals in the address must be FE80 to FEBF.
Description
Use the ipv6 address link-local command to configure a link-local address for the interface.
Use the undo ipv6 address link-local command to remove the configured link-local address for the interface.
Note that:
Manual assignment takes precedence over automatic generation. That is, if you first adopt automatic generation and then manual assignment, the manually assigned link-local address will overwrite the automatically generated one. If you first adopt manual assignment and then automatic generation, the automatically generated link-local address will not take effect and the link-local address of an interface is still the manually assigned one. If you delete the manually assigned address, the automatically generated link-local address is validated. For automatic generation of an IPv6 link-local address, see the ipv6 address auto link-local command.
Examples
# Configure a link-local address for VLAN-interface 100.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 address fe80::1 link-local
ipv6 fibcache
Syntax
ipv6 fibcache
undo ipv6 fibcache
View
System view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 fibcache command to enable the caching function of the IPv6 FIB.
Use the undo ipv6 fibcache command to disable the caching function of the IPv6 FIB.
By default, the caching function of the IPv6 FIB is disabled.
Note that the caching function of the IPv6 FIB is valid only for packets to be forwarded.
Examples
# Enable the caching function of the IPv6 FIB.
<Sysname> system-view
[Sysname] ipv6 fibcache
ipv6 icmp-error
Syntax
ipv6 icmp-error { bucket bucket-size | ratelimit interval } *
undo ipv6 icmp-error
View
System view
Default Level
2: System level
Parameters
bucket bucket-size: Number of tokens in a token bucket, in the range of 1 to 200.
ratelimit interval: Update period of the token bucket in milliseconds, in the range of 0 to 2,147,483,647. The update period “0” indicates that the number of ICMPv6 error packets sent is not restricted.
Description
Use the ipv6 icmp-error command to configure the size and update period of a token bucket.
Use the undo ipv6 icmp-error command to restore the defaults.
By default, the size is 10 and the update period is 100 milliseconds. That is, at most 10 ICMPv6 error packets can be sent within these 100 milliseconds.
Examples
# Set the capacity of the token bucket to 50 and the update period to 100 milliseconds.
<Sysname> system-view
[Sysname] ipv6 icmp-error bucket 50 ratelimit 100
ipv6 icmpv6 multicast-echo-reply enable
Syntax
ipv6 icmpv6 multicast-echo-reply enable
undo ipv6 icmpv6 multicast-echo-reply
View
System view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 icmpv6 multicast-echo-reply enable command to enable sending of multicast echo replies.
Use the undo ipv6 icmpv6 multicast-echo-reply command to disable sending of multicast echo replies.
By default, the AP is disabled from sending multicast echo replies.
Examples
# Enable sending of multicast echo replies.
<Sysname> system-view
[Sysname] ipv6 icmpv6 multicast-echo-reply enable
ipv6 mtu
Syntax
ipv6 mtu mtu-size
undo ipv6 mtu
View
VLAN interface view
Default Level
2: System level
Parameters
mtu-size: Size of the maximum transmission units (MTUs) of an interface in bytes. The value ranges from 1280 to 1500.
Description
Use the ipv6 mtu command to set the MTU of IPv6 packets sent over an interface.
Use the undo ipv6 mtu command to restore the default MTU.
By default, the MTU value is 1500 bytes.
Examples
# Set the MTU of IPv6 packets sent over VLAN-interface 100 to 1280 bytes.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 mtu 1280
ipv6 nd autoconfig managed-address-flag
Syntax
ipv6 nd autoconfig managed-address-flag
undo ipv6 nd autoconfig managed-address-flag
View
Interface view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 nd autoconfig managed-address-flag command to set the managed address configuration (M) flag to 1 so that the host can acquire an IPv6 address through stateful autoconfiguration (for example, DHCP server).
Use the undo ipv6 nd autoconfig managed-address-flag command to restore the default.
By default, the M flag is set to 0 so that the host can acquire an IPv6 address through stateless autoconfiguration.
Examples
# Configure the host to acquire an IPv6 address through stateful autoconfiguration.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd autoconfig managed-address-flag
ipv6 nd autoconfig other-flag
Syntax
ipv6 nd autoconfig other-flag
undo ipv6 nd autoconfig other-flag
View
Interface view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 nd autoconfig other-flag command to set the other stateful configuration flag (O) flag to 1 so that the host can acquire information other than IPv6 address through stateful autoconfiguration (for example, DHCP server).
Use the undo ipv6 nd autoconfig other-flag command to restore the default.
By default, the O flag is set to 0 so that the host can acquire other information through stateless autoconfiguration.
Examples
# Configure the host to acquire information other than IPv6 address through stateless autoconfiguration.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] undo ipv6 nd autoconfig other-flag
ipv6 nd dad attempts
Syntax
ipv6 nd dad attempts value
undo ipv6 nd dad attempts
View
Interface view
Default Level
2: System level
Parameters
value: Number of attempts to send an NS message for DAD, in the range of 0 to 600. The default value is “1”. When it is set to 0, the DAD is disabled.
Description
Use the ipv6 nd dad attempts command to configure the number of attempts to send an NS message for DAD.
Use the undo ipv6 nd dad attempts command to restore the default.
By default, the number of attempts to send an NS message for DAD is 1.
Related commands: display ipv6 interface.
Examples
# Set the number of attempts to send an NS message for DAD to 20.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd dad attempts 20
ipv6 nd hop-limit
Syntax
ipv6 nd hop-limit value
undo ipv6 nd hop-limit
View
System view
Default Level
2: System level
Parameters
value: Number of hops, in the range of 0 to 255. When it is set to 0, the Cur Hop Limit field in RA messages sent by the AP is 0. That is, the number of hops is determined by the host itself, but not specified by the AP.
Description
Use the ipv6 nd hop-limit command to configure the hop limit advertised by the AP.
Use the undo ipv6 nd hop-limit command to restore the default hop limit.
By default, the hop limit advertised by the AP is 64.
Examples
# Set the hop limit advertised by the AP to 100.
<Sysname> system-view
[Sysname] ipv6 nd hop-limit 100
ipv6 nd mac-check enable
Syntax
ipv6 nd mac-check enable
undo ipv6 nd mac-check enable
View
System view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 nd mac-check enable command to enable the consistency check on the source MAC address of ND packets. With this command configured, a gateway checks the source MAC address of each received ND packet against that in the link layer address option, and discards the packet if the MAC addresses are inconsistent.
Use the undo ipv6 nd mac-check enable command to disable the function
By default, the consistency check on the source MAC address of ND packets is disabled.
Examples
# Enable the consistency check on the source MAC address of ND packets.
<Sysname> system-view
[Sysname] ipv6 nd mac-check enable
ipv6 nd ns retrans-timer
Syntax
ipv6 nd ns retrans-timer value
undo ipv6 nd ns retrans-timer
View
Interface view
Default Level
2: System level
Parameters
value: Interval for sending NS messages in milliseconds, in the range of 1,000 to 4,294,967,295.
Description
Use the ipv6 nd ns retrans-timer command to set the interval for sending NS messages. The local interface sends NS messages at intervals of this value. Furthermore, the Retrans Timer field in RA messages sent by the local interface is equal to this value.
Use the undo ipv6 nd ns retrans-timer command to restore the default interval.
By default, the local interface sends NS messages at intervals of 1,000 milliseconds and the Retrans Timer field in RA messages sent by the local interface is 0.
Related commands: display ipv6 interface.
Examples
# Specify VLAN-interface 100 to send NS messages at intervals of 10,000 milliseconds.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd ns retrans-timer 10000
ipv6 nd nud reachable-time
Syntax
ipv6 nd nud reachable-time value
undo ipv6 nd nud reachable-time
View
Interface view
Default Level
2: System level
Parameters
value: Neighbor reachable time in milliseconds, in the range of 1 to 3,600,000.
Description
Use the ipv6 nd nud reachable-time command to configure the neighbor reachable time on an interface. This time value serves as not only the neighbor reachable time on the local interface, but also the value of the Reachable Timer field in RA messages sent by the local interface.
Use the undo ipv6 nd nud reachable-time command to restore the default neighbor reachable time and to specify the value of the Reachable Timer field in RA messages as 0, so that the number of hops is determined by the host itself, but not specified by the AP.
By default, the neighbor reachable time on the local interface is 30,000 milliseconds and the Reachable Timer field in RA messages is 0.
Related commands: display ipv6 interface.
Examples
# Set the neighbor reachable time on VLAN-interface 100 to 10,000 milliseconds.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd nud reachable-time 10000
ipv6 nd ra halt
Syntax
ipv6 nd ra halt
undo ipv6 nd ra halt
View
Interface view
Default Level
2: System level
Parameters
None
Description
Use the ipv6 nd ra halt command to enable RA message suppression.
Use the undo ipv6 nd ra halt command to disable the RA message suppression.
By default, RA messages are suppressed.
Examples
# Suppress RA messages on VLAN-interface 100.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd ra halt
ipv6 nd ra interval
Syntax
ipv6 nd ra interval max-interval-value min-interval-value
undo ipv6 nd ra interval
View
Interface view
Default Level
2: System level
Parameters
max-interval-value: Maximum interval for advertising RA messages in seconds, in the range of 4 to 1,800.
min-interval-value: Minimum interval for advertising RA messages in seconds, in the range of 3 to 1,350.
Description
Use the ipv6 nd ra interval command to set the maximum and minimum interval for advertising RA messages. The AP advertises RA messages at intervals of a random value between the maximum interval and the minimum interval.
Use the undo ipv6 nd ra interval command to restore the default.
By default, the maximum interval between RA messages is 600 seconds, and the minimum interval is 200 seconds.
Note the following:
l The minimum interval should be three-fourths of the maximum interval or less.
l The maximum interval for sending RA messages should be less than or equal to the router lifetime in RA messages.
Examples
# Set the maximum interval for advertising RA messages to 1,000 seconds and the minimum interval to 700 seconds.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd ra interval 1000 700
ipv6 nd ra prefix
Syntax
ipv6 nd ra prefix { ipv6-address prefix-length | ipv6-address/prefix-length } valid-lifetime preferred-lifetime [ no-autoconfig | off-link ] *
undo ipv6 nd ra prefix ipv6-prefix
View
Interface view
Default Level
2: System level
Parameters
ipv6-address: IPv6 address or IPv6 address prefix.
prefix-length: Prefix length of an IPv6 address.
ipv6-prefix: IPv6 address prefix.
valid-lifetime: Valid lifetime of a prefix in seconds, in the range of 0 to 4,294,967,295.
preferred-lifetime: Preferred lifetime of a prefix used for stateless autoconfiguration in seconds, in the range of 0 to 4,294,967,295.
no-autoconfig: Specifies a prefix not to be used for stateless autoconfiguration. If this keyword is not provided, the prefix is used for stateless autoconfiguration.
off-link: Specifies the address with the prefix not to be directly reachable on the link. If this keyword is not provided, the address with the prefix is directly reachable on the link.
Description
Use the ipv6 nd ra prefix command to configure the prefix information in RA messages.
Use the undo ipv6 nd ra prefix command to remove the prefix information from RA messages.
By default, no prefix information is configured in RA messages and the IPv6 address of the interface sending RA messages is used as the prefix information.
Examples
# Configure the prefix information for RA messages on VLAN-interface 100.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd ra prefix 2001:10::100/64 100 10
ipv6 nd ra router-lifetime
Syntax
ipv6 nd ra router-lifetime value
undo ipv6 nd ra router-lifetime
View
Interface view
Default Level
2: System level
Parameters
value: Router lifetime in seconds, in the range of 0 to 9,000. When it is set to 0, the AP does not serve as the default router.
Description
Use the ipv6 nd ra router-lifetime command to configure the router lifetime in RA messages.
Use the undo ipv6 nd ra router-lifetime command to restore the default configuration.
By default, the router lifetime in RA messages is 1,800 seconds.
Note that the router lifetime in RA messages should be greater than or equal to the advertising interval.
Examples
# Set the router lifetime in RA messages on VLAN-interface 100 to 1,000 seconds.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 nd ra router-lifetime 1000
ipv6 neighbor
Syntax
ipv6 neighbor ipv6-address mac-address { vlan-id port-type port-number | interface interface-type interface-number }
undo ipv6 neighbor ipv6-address interface-type interface-number
View
System view
Default Level
2: System level
Parameters
ipv6-address: IPv6 address in a static neighbor entry.
mac-address: Link layer address in a static neighbor entry (48 bits long, in the format of H-H-H).
vlan-id: VLAN ID in a static neighbor entry, in the range of 1 to 4094.
port-type port-number: Type and number of a Layer 2 port in a static neighbor entry.
interface interface-type interface-number: Type and number of a Layer 3 interface in a static neighbor entry.
Description
Use the ipv6 neighbor command to configure a static neighbor entry.
Use the undo ipv6 neighbor command to remove a static neighbor entry.
Note that you can adopt the IPv6 address and link layer address of the Layer 3 VLAN interface or those of the VLAN port to configure a static neighbor entry.
l If a static neighbor entry is configured by using the first method, the neighbor entry is in the INCMP state. After the AP obtains the corresponding Layer 2 VLAN port information through resolution, the neighbor entry will go into the REACH state.
l If a static neighbor entry is configured by using the second method, the corresponding VLAN interface must exist and the port specified by port-type port-number must belong to the VLAN specified by vlan-id. After a static neighbor entry is configured, the AP will relate the VLAN interface with the IPv6 address to identify a static neighbor entry uniquely and the entry will be in the REACH state.
You only need to specify the corresponding VLAN interface before removing a static neighbor entry.
Related commands: display ipv6 neighbors.
Examples
# Configure a static neighbor entry for Layer 2 port Ethernet 1/0 of VLAN 100.
<Sysname> system-view
[Sysname] ipv6 neighbor 2000::1 fe-e0-89 100 ethernet 1/0
ipv6 neighbors max-learning-num
Syntax
ipv6 neighbors max-learning-num number
undo ipv6 neighbors max-learning-num
View
Interface view
Default Level
2: System level
Parameters
number: Maximum number of neighbors that can be dynamically learned by an interface, which is in the range of 1 to 256 and defaults to 256.
Description
Use the ipv6 neighbors max-learning-num command to configure the maximum number of neighbors that can be dynamically learned on a specified interface.
Use the undo ipv6 neighbors max-learning-num command to restore the default.
Examples
# Set the maximum number of neighbors that can be dynamically learned on VLAN-interface 100 to 10.
<Sysname> system-view
[Sysname] interface vlan-interface 100
[Sysname-Vlan-interface100] ipv6 neighbors max-learning-num 10
ipv6 pathmtu
Syntax
ipv6 pathmtu ipv6-address [ value ]
undo ipv6 pathmtu ipv6-address
View
System view
Default Level
2: System level
Parameters
ipv6-address: Specified IPv6 address.
value: PMTU of a specified IPv6 address in bytes, in the range of 1280 to 10000.
Description
Use the ipv6 pathmtu command to configure a static PMTU for a specified IPv6 address.
Use the undo ipv6 pathmtu command to remove the PMTU configuration for a specified IPv6 address.
By default, no static PMTU is configured.
Examples
# Configure a static PMTU for a specified IPv6 address.
<Sysname> system-view
[Sysname] ipv6 pathmtu fe80::12 1300
ipv6 pathmtu age
Syntax
ipv6 pathmtu age age-time
undo ipv6 pathmtu age
View
System view
Default Level
2: System level
Parameters
age-time: Aging time for PMTU in minutes, in the range of 10 to 100.
Description
Use the ipv6 pathmtu age command to configure the aging time for a dynamic PMTU.
Use the undo ipv6 pathmtu age command to restore the default.
By default, the aging time is 10 minutes.
Note that the aging time is invalid for a static PMTU.
Related commands: display ipv6 pathmtu.
Examples
# Set the aging time for a dynamic PMTU to 40 minutes.
<Sysname> system-view
[Sysname] ipv6 pathmtu age 40
reset ipv6 fibcache
Syntax
reset ipv6 fibcache
View
User view
Default Level
2: System level
Parameters
None
Description
Use the reset ipv6 fibcache command to clear FIB cache entries.
Examples
# Clear FIB cache entries.
<Sysname> reset ipv6 fibcache
reset ipv6 neighbors
Syntax
reset ipv6 neighbors { all | dynamic | interface interface-type interface-number | static }
View
User view
Default Level
2: System level
Parameters
all: Clears the static and dynamic neighbor information on all interfaces.
dynamic: Clears the dynamic neighbor information on all interfaces.
interface interface-type interface-number: Clears dynamic neighbor information on a specified interface.
static: Clears the static neighbor information on all interfaces.
Description
Use the reset ipv6 neighbors command to clear IPv6 neighbor information.
You can use the display ipv6 neighbors command to display the current IPv6 neighbor information.
Examples
# Clear neighbor information on all interfaces.
<Sysname> reset ipv6 neighbors all
# Clear dynamic neighbor information on all interfaces.
<Sysname> reset ipv6 neighbors dynamic
# Clear all neighbor information on VLAN-interface 1.
<Sysname> reset ipv6 neighbors interface vlan-interface 1
reset ipv6 pathmtu
Syntax
reset ipv6 pathmtu { all | static | dynamic }
View
User view
Default Level
2: System level
Parameters
all: Clears all PMTUs.
static: Clears all static PMTUs.
dynamic: Clears all dynamic PMTUs.
Description
Use the reset ipv6 pathmtu the command to clear the PMTU information.
Examples
# Clear all PMTUs.
<Sysname> reset ipv6 pathmtu all
reset ipv6 statistics
Syntax
reset ipv6 statistics
View
User view
Default Level
2: System level
Parameters
None
Description
Use the reset ipv6 statistics command to clear the statistics of IPv6 packets and ICMPv6 packets.
You can use the display tcp ipv6 statistics command to display the statistics of IPv6 TCP connections.
Examples
# Clear the statistics of IPv6 packets and ICMPv6 packets.
<Sysname> reset ipv6 statistics
reset tcp ipv6 statistics
Syntax
reset tcp ipv6 statistics
View
User view
Default Level
2: System level
Parameters
None
Description
Use the reset tcp ipv6 statistics command to clear the statistics of all IPv6 TCP connections.
You can use the display tcp ipv6 statistics command to display the statistics of IPv6 TCP connections.
Examples
# Clear the statistics of all IPv6 TCP connections.
<Sysname> reset tcp ipv6 statistics
reset udp ipv6 statistics
Syntax
reset udp ipv6 statistics
View
User view
Default Level
2: System level
Parameters
None
Description
Use the reset udp ipv6 statistics command to clear the statistics of all IPv6 UDP packets.
You can use the display udp ipv6 statistics command to display the statistics of IPv6 UDP packets.
Examples
# Clear the statistics of all IPv6 UDP packets.
<Sysname> reset udp ipv6 statistics
tcp ipv6 timer fin-timeout
Syntax
tcp ipv6 timer fin-timeout wait-time
undo tcp ipv6 timer fin-timeout
View
System view
Default Level
2: System level
Parameters
wait-time: Length of the finwait timer for IPv6 TCP connections in seconds, in the range of 76 to 3,600.
Description
Use the tcp ipv6 timer fin-timeout command to set the finwait timer for IPv6 TCP connections.
Use the undo tcp ipv6 timer fin-timeout command to restore the default.
By default, the length of the finwait timer is 675 seconds.
Examples
# Set the finwait timer length of IPv6 TCP connections to 800 seconds.
<Sysname> system-view
[Sysname] tcp ipv6 timer fin-timeout 800
tcp ipv6 timer syn-timeout
Syntax
tcp ipv6 timer syn-timeout wait-time
undo tcp ipv6 timer syn-timeout
View
System view
Default Level
2: System level
Parameters
wait-time: Length of the synwait timer for IPv6 TCP connections in seconds, in the range of 2 to 600.
Description
Use the tcp ipv6 timer syn-timeout command to set the synwait timer for IPv6 TCP connections
Use the undo tcp ipv6 timer syn-timeout command to restore the default.
By default, the length of the synwait timer of IPv6 TCP connections is 75 seconds.
Examples
# Set the synwait timer length of IPv6 TCP connections to 100 seconds.
<Sysname> system-view
[Sysname] tcp ipv6 timer syn-timeout 100
tcp ipv6 window
Syntax
tcp ipv6 window size
undo tcp ipv6 window
View
System view
Default Level
2: System level
Parameters
size: Size of the IPv6 TCP sending/receiving buffer in KB (kilobyte), in the range of 1 to 32.
Description
Use the tcp ipv6 window command to set the size of the IPv6 TCP sending/receiving buffer.
Use the undo tcp ipv6 window command to restore the default.
By default, the size of the IPv6 TCP sending/receiving buffer is 8 KB.
Examples
# Set the size of the IPv6 TCP sending/receiving buffer to 4 KB.
<Sysname> system-view
[Sysname] tcp ipv6 window 4
