Contents

Introduction· 1

Prerequisites· 1

Restrictions and guidelines· 1

Example: Configuring CPOS-E1 channels· 1

Network configuration· 1

Restrictions and guidelines· 1

Procedures· 2

Configuring Router A· 2

Configuring Router B· 2

Verifying the configuration· 3

Configuration files· 5

Related documentation· 5

 

Introduction

This document provides CPOS-E1 channel configuration examples.

Prerequisites

The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.

This document assumes that you have basic knowledge of CPOS interface, E1, and MP.

Restrictions and guidelines

MP supports binding interfaces on the same LPU rather than on different LPUs. MP binding on different subcards on the same LPU is not supported.

Only subcards MIC-ET16L, MIC-CLP2L, and MIC-CLP4L support MP binding.

Example: Configuring CPOS-E1 channels

Network configuration

As shown in Figure 1, branch nodes Router B through Router H are uplinked to the central node Router A through E1 links. Router A aggregates these E1 links by using a CPOS interface.

Add one additional E1 link on Router B to expand its capacity, and use an MP-group interface to bind the two E1 links.

Figure 1 Network diagram

 

Restrictions and guidelines

For correct network synchronization, make sure the master clock mode is configured on the SONET/SDH devices connected to the routers.

Procedures

Configuring Router A

# Configure E1 channels 1 and 2 of CPOS 3/1/4 to operate in unframed mode.

<RouterA> system-view

[RouterA] controller cpos 3/1/4

[RouterA-Cpos3/1/4] e1 1 unframed

[RouterA-Cpos3/1/4] e1 2 unframed

# Create MP-group 3/1/1 and assign an IP address to it.

[RouterA] interface mp-group 3/1/1

[RouterA-Mp-group3/1/1] ip address 10.1.1.1 24

[RouterA-Mp-group3/1/1] quit

# Assign Serial 3/1/4/1:0 to MP-group interface 3/1/1.

[RouterA] interface serial3/1/4/1:0

[RouterA-Serial3/1/4/1:0] ppp mp mp-group 3/1/1

[RouterA-Serial3/1/4/1:0] quit

# Assign Serial 3/1/4/2:0 to MP-group interface 3/1/1.

[RouterA] interface serial3/1/4/2:0

[RouterA-Serial3/1/4/2:0] ppp mp mp-group 3/1/1

[RouterA-Serial3/1/4/2:0] quit

Configuring Router B

# Configure E1 3/1/10 to operate in E1 mode.

<RouterB> system-view

[RouterB] controller e1 3/1/10

[RouterB-E1 3/1/10] using e1

[RouterB-E1 3/1/10] quit

# Configure E1 3/1/8 to operate in E1 mode.

[RouterB] controller e1 3/1/8

[RouterB-E1 3/1/8] using e1

[RouterB-E1 3/1/8] quit

# Create MP-group 3/1/1 and assign an IP address to it.

[RouterB] interface mp-group 3/1/1

[RouterB-Mp-group3/1/1] ip address 10.1.1.2 24

[RouterB-Mp-group3/1/1] quit

# Assign Serial 3/1/10:0 to MP-group interface 3/1/1.

[RouterB] interface serial3/1/10:0

[RouterB-Serial3/1/10:0] ppp mp mp-group 3/1/1

[RouterB-Serial3/1/10:0] quit

# Assign Serial 3/1/8:0 to MP-group interface 3/1/1.

[RouterB] interface serial3/1/8:0

[RouterB-Serial3/1/8:0] ppp mp mp-group 3/1/1

[RouterB-Serial3/1/8:0] quit

Verifying the configuration

1.     Verify the MP interface configuration and state on Router A and Router B.

# Display detailed information about MP-group interface 3/1/1 on Router A.

[RouterA] display interface mp-group 3/1/1

MP-group3/1/1

Current state: UP

Line protocol state: UP

Description: MP-group3/1/1 Interface

Bandwidth: 1024kbps

Maximum transmit unit: 1500

Hold timer: 10 seconds, retry times: 5

Internet Address is 10.1.1.1/24 (primary)

Link layer protocol: PPP

LCP: opened, MP: opened, IPCP: opened, OSICP: opened, MPLSCP: opened, IPv6CP: op

ened

Physical: MP, baudrate: 1024000 bps

Last link flapping: Never

Last clearing of counters: Never

Last 5 seconds input rate: 14 bytes/sec, 112 bits/sec, 0 packets/sec

Last 5 seconds output rate: 14 bytes/sec, 112 bits/sec, 0 packets/sec

Input: 73 packets, 24764 bytes, 0 drops

Output: 62 packets, 24882 bytes, 0 drops

The output shows that the MP-group interface on Router A is up.

# Display detailed information about MP-group interface 3/1/1 on Router B.

[RouterB] display interface mp-group 3/1/1

MP-group3/1/1

Current state: UP

Line protocol state: UP

Description: MP-group3/1/1 Interface

Bandwidth: 1024kbps

Maximum transmit unit: 1500

Hold timer: 10 seconds, retry times: 5

Internet Address is 10.1.1.2/24 (primary)

Link layer protocol: PPP

LCP: opened, MP: opened, IPCP: opened, OSICP: opened, MPLSCP: opened, IPv6CP: opened

Physical: MP, baudrate: 1024000 bps

Last link flapping: Never

Last clearing of counters: Never

Last 10 seconds input rate: 374 bytes/sec, 2992 bits/sec, 1 packets/sec

Last 10 seconds output rate: 293 bytes/sec, 2344 bits/sec, 0 packets/sec

Input: 39 packets, 12301 bytes, 0 drops

Output: 37 packets, 11824 bytes, 0 drops

The output shows that the MP-group interface on Router B is up.

2.     Verify that the MP-group interface configuration on Router A and Router B.

# Display MP information on MP-group interface 3/1/1 of Router A.

[RouterA] display ppp mp interface mp-group 3/1/1

Template: MP-group3/1/1

max-bind: 16, fragment: enabled, min-fragment: 128

Master link: MP-group3/1/1, Active members: 2, Bundle Multilink

Peer's endPoint descriptor: MP-group3/1/1

Sequence format: long (rcv)/long (sent)

Bundle Up Time: 2021/07/25  09:16:07:745

0 lost fragments, 0 reordered, 0 unassigned, 0 interleaved

Sequence: 0 (rcv)/0 (sent)

Active member channels: 16 members

      Serial3/1/4/1:0           Up-Time:2021/07/25  09:16:07:747

      Serial3/1/4/2:0           Up-Time:2021/07/25  09:16:07:746

The output shows that the MP-group interface has been correctly configured.

# Display MP information on MP-group interface 3/1/1 of Router B.

[RouterB] display ppp mp interface mp-group 3/1/1

Template: MP-group3/1/1

max-bind: 16, fragment: enabled, min-fragment: 128

Master link: MP-group3/1/1, Active members: 2, Bundle Multilink

Peer's endPoint descriptor: MP-group3/1/1

Sequence format: long (rcv)/long (sent)

Bundle Up Time: 2021/07/25  09:16:07:745

0 lost fragments, 0 reordered, 0 unassigned, 0 interleaved

Sequence: 0 (rcv)/0 (sent)

Active member channels: 16 members

     Serial3/1/8:0              Up-Time:2014/07/25  09:16:07:747

     Serial3/1/10:0             Up-Time:2014/07/25  09:16:07:746

The output shows that the MP-group interface has been correctly configured.

3.     Verify that the MP-group interface on Router A and Router B can ping each other.

# Ping MP-group interface 3/1/1 on Router B from Router A.

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=32.998 ms

56 bytes from 10.1.1.2: icmp_seq=1 ttl=255 time=27.632 ms

56 bytes from 10.1.1.2: icmp_seq=2 ttl=255 time=34.517 ms

56 bytes from 10.1.1.2: icmp_seq=3 ttl=255 time=45.058 ms

56 bytes from 10.1.1.2: icmp_seq=4 ttl=255 time=35.121 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 = 27.632/35.065/45.058/5.651 ms

# Ping MP-group interface 3/1/1 on Router A from Router B.

[RouterB] ping 10.1.1.1

Ping 10.1.1.1 (10.1.1.1): 56 data bytes, press CTRL_C to break

56 bytes from 10.1.1.1: icmp_seq=0 ttl=255 time=27.877 ms

56 bytes from 10.1.1.1: icmp_seq=1 ttl=255 time=27.616 ms

56 bytes from 10.1.1.1: icmp_seq=2 ttl=255 time=42.308 ms

56 bytes from 10.1.1.1: icmp_seq=3 ttl=255 time=36.238 ms

56 bytes from 10.1.1.1: icmp_seq=4 ttl=255 time=71.639 ms

 

--- Ping statistics for 10.1.1.1 ---

5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss

round-trip min/avg/max/std-dev = 27.616/41.136/71.639/16.214 ms

The output shows that the MP-group interfaces on Router A and Router B can ping each other.

Configuration files

·     Router A:

#

controller cpos 3/1/4

 e1 1 unframed

 e1 2 unframed

#

interface mp-group 3/1/1

 ip address 10.1.1.1 24

#

interface serial3/1/4/1:0

 ppp mp mp-group 3/1/1

#

interface serial3/1/4/2:0

 ppp mp mp-group 3/1/1

#

·     Router B:

#

controller e1 3/1/10

 using e1

#

controller e1 3/1/8

 using e1

#

interface mp-group 3/1/1

 ip address 10.1.1.2 24

#

interface serial3/1/8:0

 ppp mp mp-group 3/1/1

#

interface serial3/1/10:0

 ppp mp mp-group 3/1/1

#

Related documentation

·     H3C SR8800-X Routers Interface Configuration Guide-R8380

·     H3C SR8800-X Routers Interface Command Reference-R8380

·     H3C SR8800-X Routers Layer 2—WAN Access Configuration Guide-R8380

·     H3C SR8800-X Routers Layer 2—WAN Access Command Reference-R8380