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46-OpenFlow典型配置举例
本章节下载： 46-OpenFlow典型配置举例 (201.30 KB)
目 录
本文档介绍了OpenFlow的配置举例。
OpenFlow允许控制器直接访问和操作网络设备的转发平面，将控制平面和数据平面分离。交换机依据控制器下发的流表（Flow Table）对报文进行匹配和转发，在同一个流表中按照流表项的优先级大小进行匹配。一个OpenFlow交换机可以包含一个或者多个流表。
本文档中的配置均是在实验室环境下进行的配置和验证，配置前设备的所有参数均采用出厂时的缺省配置。如果您已经对设备进行了配置，为了保证配置效果，请确认现有配置和以下举例中的配置不冲突。
本文假设您已了解OpenFlow特性。
如图1所示，Host A和Host C属于VLAN 4092；Host B和Host D属于VLAN 4094；它们之间通过Switch A和Swtich B进行连接。现要求通过对Switch A和Switch B进行OpenFlow配置，使VLAN 4092和VLAN 4094内的主机基于控制器下发的流表项进行通信，即要求交换机对VLAN 4092和VLAN 4094内的数据进行OpenFlow转发。
图1 OpenFlow基本功能配置举例组网图
· 为了使控制器可以通过LLDP学习OpenFlow网络拓扑，设备上必须全局使能LLDP功能。
· 为了使OpenFlow实例与控制器建立连接，需要配置交换机与控制器之间路由可达，本例中以VLAN接口1作为与控制器通信的接口。
· 为了保持交换机与控制器之间连接的可靠性，需要使用TCP/SSL建立连接。本例中采用TCP方式建立交换机与控制器之间的连接。如果需要更高的连接可靠性，可以选择使用SSL建立连接。
· 为了使连接主机的Access类型的端口成为OpenFlow端口，配置映射VLAN 4092、VLAN 4094时，需要选择Loosen模式。
表1 适用产品及版本
|
产品 |
软件版本 |
|
S5560X-EI系列 |
Release 63xx系列 |
|
S5560X-HI系列 |
Release 63xx系列 |
|
S5500V2-EI系列 |
Release 63xx系列 |
|
MS4520V2-30F |
Release 63xx系列 |
|
S6520X-HI系列 S6520X-EI系列 |
Release 63xx系列 |
|
S6520X-SI系列 S6520-SI系列 |
Release 63xx系列 |
|
S5000-EI系列 |
Release 63xx系列 |
|
MS4600系列 |
Release 63xx系列 |
|
S5560S-EI系列 S5560S-SI系列 |
Release 63xx系列 |
|
S5130S-HI系列 S5130S-EI系列 S5130S-SI系列 S5130S-LI系列 |
Release 63xx系列 |
|
S5120V2-SI系列 S5120V2-LI系列 |
Release 63xx系列 |
|
S3100V3-EI系列 S3100V3-SI系列 |
Release 63xx系列 |
|
S5110V2系列 |
Release 63xx系列 |
|
S5110V2-SI系列 |
Release 63xx系列 |
|
S5000V3-EI系列 |
Release 63xx系列 |
|
S5000E-X系列 |
Release 63xx系列 |
|
E128C E152C E500C系列 E500D系列 |
Release 63xx系列 |
|
MS4520V2系列（除MS4520V2-30F） |
Release 63xx系列 |
|
MS4320V2系列 MS4300V2系列 MS4320系列 MS4200系列 |
Release 63xx系列 |
|
WS5850-WiNet系列 |
Release 63xx系列 |
|
WS5820-WiNet系列 WS5810-WiNet系列 |
Release 63xx系列 |
|
WAS6000系列 |
Release 63xx系列 |
# 配置VLAN。
<SwitchA> system-view
[SwitchA] vlan 4092
[SwitchA-vlan4092] quit
[SwitchA] vlan 4094
[SwitchA-vlan4094] quit
# 配置Switch A上的接口GigabitEthernet3/0/1、GigabitEthernet3/0/2和GigabitEthernet3/0/3。
[SwitchA] interface gigabitethernet 3/0/1
[SwitchA-GigabitEthernet3/0/1] port access vlan 4092
[SwitchA-GigabitEthernet3/0/1] quit
[SwitchA] interface GigabitEthernet 3/0/2
[SwitchA-GigabitEthernet3/0/2] port access vlan 4094
[SwitchA-GigabitEthernet3/0/2] quit
[SwitchA] interface gigabitethernet 3/0/3
[SwitchA-GigabitEthernet3/0/3] port link-type trunk
[SwitchA-GigabitEthernet3/0/3] port trunk permit vlan 4092 4094
[SwitchA-GigabitEthernet3/0/3] quit
# 全局使能LLDP功能。
[SwitchA] lldp global enable
# 配置VLAN接口1用于和控制器建立连接。
[SwitchA] interface Vlan-interface 1
[SwitchA-Vlan-interface1] ip address 192.168.2.125 255.255.255.0
[SwitchA-Vlan-interface1] quit
# 创建OpenFlow实例1并映射VLAN 4092和VLAN 4094，同时选择映射模式为Loosen模式。
[SwitchA] openflow instance 1
[SwitchA-of-inst-1] classification vlan 4092 mask 4093 loosen
# 配置控制器0的IP地址并激活实例。
[SwitchA-of-inst-1] controller 0 address ip 192.168.2.225
[SwitchA-of-inst-1] active instance
[SwitchA-of-inst-1] quit
# 配置VLAN。
<SwitchB> system-view
[SwitchB] vlan 4092
[SwitchB-vlan4092] quit
[SwitchB] vlan 4094
[SwitchB-vlan4094] quit
# 配置Switch B上的接口GigabitEthernet3/0/1、GigabitEthernet3/0/2和GigabitEthernet3/0/3。
[SwitchB] interface gigabitethernet 3/0/1
[SwitchB-GigabitEthernet3/0/1] port access vlan 4092
[SwitchB-GigabitEthernet3/0/1] quit
[SwitchB] interface gigabitethernet 3/0/2
[SwitchB-GigabitEthernet3/0/2] port access vlan 4094
[SwitchB-GigabitEthernet3/0/2] quit
[SwitchB] interface gigabitethernet 3/0/3
[SwitchB-GigabitEthernet3/0/3] port link-type trunk
[SwitchB-GigabitEthernet3/0/3] port trunk permit vlan 4092 4094
[SwitchB-GigabitEthernet3/0/3] quit
# 全局使能LLDP功能。
[SwitchB] lldp global enable
# 配置VLAN接口1用于和控制器建立连接。
[SwitchB] interface Vlan-interface 1
[SwitchB-Vlan-interface1] ip address 192.168.2.126 255.255.255.0
[SwitchB-Vlan-interface1] quit
# 创建OpenFlow实例1并映射VLAN 4092和VLAN 4094，同时选择映射模式为Loosen模式。
[SwitchB] openflow instance 1
[SwitchB-of-inst-1] classification vlan 4092 mask 4093 loosen
# 配置控制器0的IP地址并激活实例。
[SwitchB-of-inst-1] controller 0 address ip 192.168.2.225
[SwitchB-of-inst-1] active instance
[SwitchB-of-inst-1] quit
# 以Switch A为例，查看OpenFlow实例1的信息。
[SwitchA] display openflow instance 1
Instance 1 information:
Configuration information:
Description : --
Active status : Active
Inactive configuration:
None
Active configuration:
Classification VLAN, loosen mode, total VLANs(2)
4092, 4094
In-band management VLAN, total VLANs(0)
Empty VLAN
Connect mode: Multiple
MAC address learning: Enabled
Flow table:
Table ID(type): 0(Extensibility), count: 1
Flow-entry max-limit: 65535
Datapath ID: 0x000174258a024c00
...
Port information:
GigabitEthernet3/0/1
GigabitEthernet3/0/2
GigabitEthernet3/0/3
Active channel information:
Controller 0 IP address: 192.168.2.225 port: 6633
以上信息表明以太接口GigabitEthernet3/0/1、GigabitEthernet3/0/2、GigabitEthernet3/0/3已配置为OpenFlow端口，即可以进行OpenFlow数据转发。
# 查看Switch A与控制器的连接信息。
[SwitchA] display openflow instance 1 controller
Instance 1 controller information:
Reconnect interval: 60 (s)
Echo interval : 5 (s)
Controller ID : 0
Controller IP address : 192.168.2.225
Controller port : 6633
Controller role : Equal
Connect type : TCP
Connect state : Established
Packets sent : 132
Packets received : 434
SSL policy : --
VRF name : --
以上信息表明Swithc A已与控制器建立连接。
# 查看Switch A上的流表信息。
[SwitchA] display openflow instance 1 flow-table
Instance 1 flow table information:
Table 0 information:
Table type: Extensibility, flow entry count: 1, total flow entry count: 1
MissRule flow entry information:
cookie: 0x0, priority: 0, hard time: 0, idle time: 0, flags: flow_send_rem,
byte count: 0, packet count: 0
Match information: any
Instruction information:
Write actions:
Output interface: Controller, send length: 65509 bytes
以上信息表明此时Switch A上只有一条优先级为0的TableMiss流表项，且该条流表项的动作为上送控制器（不同控制器的缺省动作可能不同，具体请参见控制器的相关资料）。
# Host A ping Host C。
Ping 10.1.1.2 (10.1.1.2): 56 data bytes, press CTRL_C to break
56 bytes from 10.1.1.2: icmp_seq=0 ttl=255 time=4.582 ms
56 bytes from 10.1.1.2: icmp_seq=1 ttl=255 time=1.299 ms
56 bytes from 10.1.1.2: icmp_seq=2 ttl=255 time=1.389 ms
56 bytes from 10.1.1.2: icmp_seq=3 ttl=255 time=6.688 ms
56 bytes from 10.1.1.2: icmp_seq=4 ttl=255 time=1.294 ms
--- Ping statistics for 10.1.1.2 ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 1.294/3.050/6.688/2.213 ms
以上信息表明Host A与Host C之间是互通的。
# 查看Switch A上的流表信息。
[SwitchA] display openflow instance 1 flow-table
Instance 1 flow table information:
Table 0 information:
Table type: Extensibility, flow entry count: 4, total flow entry count: 4
MissRule flow entry information:
cookie: 0x0, priority: 0, hard time: 0, idle time: 0, flags: flow_send_rem,
byte count: 0, packet count: 0
Match information: any
Instruction information:
Write actions:
Output interface: Controller, send length: 65509 bytes
Flow entry 1 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 1
Match information:
Input interface: GE3/0/3
Ethernet destination MAC address: 0cda-41b1-d1c5
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 7425-8a0f-8034
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0806
Instruction information:
Write actions:
Output interface: GE3/0/1
Flow entry 2 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 4
Match information:
Input interface: GE3/0/1
Ethernet destination MAC address: 7425-8a0f-8034
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 0cda-41b1-d1c5
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0800
Instruction information:
Write actions:
Output interface: GE3/0/3
Flow entry 3 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 4
Match information:
Input interface: GE3/0/3
Ethernet destination MAC address: 0cda-41b1-d1c5
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 7425-8a0f-8034
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0800
Instruction information:
Write actions:
Output interface: GE3/0/1
以上信息表明Host A和Host C之间ARP应答报文和ICMP请求/应答报文成功触发控制器下发流表项，且相应的数据报文基于下发的流表项进行转发。
# Host B ping Host D。
Ping 20.1.1.2 (20.1.1.2): 56 data bytes, press CTRL_C to break
56 bytes from 20.1.1.2: icmp_seq=0 ttl=255 time=1.620 ms
56 bytes from 20.1.1.2: icmp_seq=1 ttl=255 time=6.625 ms
56 bytes from 20.1.1.2: icmp_seq=2 ttl=255 time=1.454 ms
56 bytes from 20.1.1.2: icmp_seq=3 ttl=255 time=1.134 ms
56 bytes from 20.1.1.2: icmp_seq=4 ttl=255 time=1.260 ms
--- Ping statistics for 20.1.1.2 ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/std-dev = 1.134/2.419/6.625/2.110 ms
以上信息表明Host B与Host D之间是互通的。
# 再次查看Switch A上的流表信息。
[SwitchA] display openflow instance 1 flow-table
Instance 1 flow table information:
Table 0 information:
Table type: Extensibility, flow entry count: 7, total flow entry count: 7
MissRule flow entry information:
cookie: 0x0, priority: 0, hard time: 0, idle time: 0, flags: flow_send_rem,
byte count: 0, packet count: 0
Match information: any
Instruction information:
Write actions:
Output interface: Controller, send length: 65509 bytes
Flow entry 1 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 1
Match information:
Input interface: GE3/0/3
Ethernet destination MAC address: 0cda-41b1-d1c5
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 7425-8a0f-8034
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0806
Instruction information:
Write actions:
Output interface: GE3/0/1
Flow entry 2 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 4
Match information:
Input interface: GE3/0/1
Ethernet destination MAC address: 7425-8a0f-8034
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 0cda-41b1-d1c5
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0800
Instruction information:
Write actions:
Output interface: GE3/0/3
Flow entry 3 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 4
Match information:
Input interface: GE3/0/3
Ethernet destination MAC address: 0cda-41b1-d1c5
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 7425-8a0f-8034
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0800
Instruction information:
Write actions:
Output interface: GE3/0/1
Flow entry 4 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 1
Match information:
Input interface: GE3/0/3
Ethernet destination MAC address: 0cda-41b1-d1c4
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 7425-8a0f-8035
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0806
Instruction information:
Write actions:
Output interface: GE3/0/2
Flow entry 5 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 4
Match information:
Input interface: GE3/0/2
Ethernet destination MAC address: 7425-8a0f-8035
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 0cda-41b1-d1c4
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0800
Instruction information:
Write actions:
Output interface: GE3/0/3
Flow entry 6 information:
cookie: 0x2328, priority: 29999, hard time: 0, idle time: 300, flags:
flow_send_rem, byte count: 1, packet count: 4
Match information:
Input interface: GE3/0/3
Ethernet destination MAC address: 0cda-41b1-d1c4
Ethernet destination MAC address mask: ffff-ffff-ffff
Ethernet source MAC address: 7425-8a0f-8035
Ethernet source MAC address mask: ffff-ffff-ffff
Ethernet type: 0x0800
Instruction information:
Write actions:
Output interface: GE3/0/2
以上信息表明Host B和Host D之间ARP应答报文和ICMP请求/应答报文也成功触发控制器下发流表项，且相应的数据报文基于下发的流表项进行转发。
部分交换机的配置文件中会显示port link-mode bridge命令，请以实际情况为准。
· Switch A：
#
lldp global enable
#
vlan 4092
#
vlan 4094
#
openflow instance 1
classification vlan 4092 mask 4093 loosen
controller 0 address ip 192.168.2.225
active instance
#
interface Vlan-interface1
ip address 192.168.2.125 255.255.255.0
#
interface GigabitEthernet3/0/1
port link-mode bridge
port access vlan 4092
#
interface GigabitEthernet3/0/2
port link-mode bridge
port access vlan 4094
#
interface GigabitEthernet3/0/3
port link-mode bridge
port link-type trunk
port trunk permit vlan 1 4092 4094
#
· Switch B：
#
lldp global enable
#
vlan 4092
#
vlan 4094
#
openflow instance 1
classification vlan 4092 mask 4093 loosen
controller 0 address ip 192.168.2.225
active instance
#
interface Vlan-interface1
ip address 192.168.2.126 255.255.255.0
#
interface GigabitEthernet3/0/1
port link-mode bridge
port access vlan 4092
#
interface GigabitEthernet3/0/2
port link-mode bridge
port access vlan 4094
#
interface GigabitEthernet3/0/3
port link-mode bridge
port link-type trunk
port trunk permit vlan 1 4092 4094
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