Contents

Introduction· 1

Prerequisites· 1

Example: Configuring CPOS-E1 channels· 1

Network configuration· 1

Restrictions and guidelines· 1

Procedures· 1

Configuring Router A· 1

Configuring Router B· 2

Verifying the configuration· 2

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.

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 3/0/4 to operate in unframed mode.

<RouterA> system-view

[RouterA] controller cpos 3/0/4

[RouterA-Cpos3/0/4] e1 1 unframed

[RouterA-Cpos3/0/4] e1 2 unframed

# Create MP-group 3/0/1 and assign an IP address to it.

[RouterA] interface mp-group 3/0/1

[RouterA-Mp-group3/0/1] ip address 10.1.1.1 24

[RouterA-Mp-group3/0/1] quit

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

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

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

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

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

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

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

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

Configuring Router B

# Configure E1 3/0/10 to operate in E1 mode.

<RouterB> system-view

[RouterB] controller e1 3/0/10

[RouterB-E1 3/0/10] using e1

[RouterB-E1 3/0/10] quit

# Configure E1 3/0/8 to operate in E1 mode.

[RouterB] controller e1 3/0/8

[RouterB-E1 3/0/8] using e1

[RouterB-E1 3/0/8] quit

# Create MP-group 3/0/1 and assign an IP address to it.

[RouterB] interface mp-group 3/0/1

[RouterB-Mp-group3/0/1] ip address 10.1.1.2 24

[RouterB-Mp-group3/0/1] quit

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

[RouterB] interface serial3/0/10:0

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

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

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

[RouterB] interface serial3/0/8:0

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

[RouterB-Serial3/0/8:0] 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 3/0/1 on Router A.

[RouterA] display interface mp-group 3/0/1

MP-group3/0/1

Current state: UP

Line protocol state: UP

Description: MP-group3/0/1 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 3/0/1 on Router B.

[RouterB] display interface mp-group 3/0/1

MP-group3/0/1

Current state: UP

Line protocol state: UP

Description: MP-group3/0/1 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 3/0/1 of Router A.

[RouterA] display ppp mp interface mp-group 3/0/1

Template: MP-group3/0/1

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

Master link: MP-group3/0/1, Active members: 2, Bundle Multilink

Peer's endPoint descriptor: MP-group3/0/1

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

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

      Serial3/0/4/2:0           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 3/0/1 of Router B.

[RouterB] display ppp mp interface mp-group 3/0/1

Template: MP-group3/0/1

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

Master link: MP-group3/0/1, Active members: 2, Bundle Multilink

Peer's endPoint descriptor: MP-group3/0/1

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

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

     Serial3/0/10:0             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 3/0/1 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 3/0/1 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 3/0/4

 e1 1 unframed

 e1 2 unframed

#

interface mp-group 3/0/1

 ip address 10.1.1.1 24

#

interface serial3/0/4/1:0

 ppp mp mp-group 3/0/1

#

interface serial3/0/4/2:0

 ppp mp mp-group 3/0/1

#

·     Router B:

#

controller e1 3/0/10

 using e1

#

controller e1 3/0/8

 using e1

#

interface mp-group 3/0/1

 ip address 10.1.1.2 24

#

interface serial3/0/8:0

 ppp mp mp-group 3/0/1

#

interface serial3/0/10:0

 ppp mp mp-group 3/0/1

#

Related documentation

·     H3C CR16000-M Routers Interface Configuration Guide

·     H3C CR16000-M Routers Interface Command Reference

·     H3C CR16000-M Routers Layer 2—WAN Access Configuration Guide

·     H3C CR16000-M Routers Layer 2—WAN Access Command Reference