Contents

Example: Configuring CE1 interfaces in unchannelized E1 mode for connectivity  1

Applicable hardware and software versions· 1

Network configuration· 1

Analysis· 1

Procedures· 1

Configuring Router A· 1

Configuring Router B· 2

Verifying the configuration· 3

Configuration files· 3

Example: Configuring CE1 interfaces in channelized CE1 mode for connectivity  4

Applicable hardware and software versions· 4

Network configuration· 4

Analysis· 5

Restrictions and guidelines· 5

Procedures· 5

Configuring Router A· 5

Configuring Router B· 6

Verifying the configuration· 7

Configuration files· 7

 

Example: Configuring CE1 interfaces in unchannelized E1 mode for connectivity

Applicable hardware and software versions

This configuration example is applicable to high-end routers running Release 838x or later.

Network configuration

As shown in Figure 1, Router A and Router B are connected through CE1 interfaces, and the links run the PPP protocol. Bind the links into an MP link through binding the links to an MP-group interface.

Figure 1 Network diagram

 

Analysis

·     Configure the CE1 interfaces to operate in unchannelized E1 mode. Then, the system will automatically create synchronous serial interfaces.

·     Create an MP-group interface, and assign the synchronous serial interfaces to the MP-group interface for MP bundling.

Procedures

Configuring Router A

1.     Configure CE1 interfaces:

# Configure the clock mode as master for CE1 interface E1 3/1/1. Configure it to operate in unchannelized E1 mode. Then, the system will automatically create synchronous serial interface Serial 3/1/1:0.

<RouterA> system-view

[RouterA] controller e1 3/1/1

[RouterA-E1 3/1/1] clock master

[RouterA-E1 3/1/1] using e1

[RouterA-E1 3/1/1] quit

# Configure the clock mode as master for CE1 interface E1 3/1/2. Configure it to operate in unchannelized E1 mode. Then, the system will automatically create a synchronous serial interface Serial 3/1/2:0.

[RouterA] controller e1 3/1/2

[RouterA-E1 3/1/2] clock master

[RouterA-E1 3/1/2] using e1

[RouterA-E1 3/1/2] quit

2.     Configure MP bundling:

# Create an MP-group interface, and assign IP address 10.1.1.1/24 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 3/1/1:0 to interface MP-group 3/1/1.

[RouterA] interface serial 3/1/1:0

[RouterA-Serial3/1/1:0] link-protocol ppp

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

[RouterA-Serial3/1/1:0] undo shutdown

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

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

[RouterA] interface serial 3/1/2:0

[RouterA-Serial3/1/2:0] link-protocol ppp

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

[RouterA-Serial3/1/2:0] undo shutdown

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

Configuring Router B

1.     Configure CE1 interfaces:

# Configure CE1 interface E1 3/1/1 to operate in unchannelized E1 mode. Then, the system will automatically create synchronous serial interface Serial 3/1/1:0.

<RouterB> system-view

[RouterB] controller e1 3/1/1

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

[RouterB-E1 3/1/1] quit

# Configure CE1 interface E1 3/1/2 to operate in unchannelized E1 mode. Then, the system will automatically create synchronous serial interface Serial 3/1/2:0.

[RouterB] controller e1 3/1/2

[RouterB-E1 3/1/2] using e1

[RouterB-E1 3/1/2] quit

2.     Configure MP bundling:

# Create an MP-group interface, and assign IP address 10.1.1.1/24 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 3/1/1:0 to interface MP-group 3/1/1.

[RouterB] interface serial 3/1/1:0

[RouterB-Serial3/1/1:0] link-protocol ppp

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

[RouterB-Serial3/1/1:0] undo shutdown

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

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

[RouterB] interface serial 3/1/2:0

[RouterB-Serial3/1/2:0] link-protocol ppp

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

[RouterB-Serial3/1/2:0] undo shutdown

[RouterB-Serial3/1/2:0] quit

Verifying the configuration

1.     Display MP information on Router A.

[RouterA] display ppp mp

Template: MP-group3/1/1

max-bind: 31, fragment: enabled, min-fragment: 128

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

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

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

Bundle Up Time: 2023/05/15  09:03:16:612

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

Sequence: 9 (rcv)/10 (sent)

Active member channels: 1 members

      Serial3/1/1:0               Up-Time:2023/05/15  09:03:16:613

      Serial3/1/2:0               Up-Time:2023/05/15  09:03:16:614

2.     Ping the peer IP address from Router A.

[RouterA] ping 10.1.1.2

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=4.000 ms

56 bytes from 10.1.1.2: icmp_seq=1 ttl=255 time=1.000 ms

56 bytes from 10.1.1.2: icmp_seq=2 ttl=255 time=0.000 ms

56 bytes from 10.1.1.2: icmp_seq=3 ttl=255 time=7.000 ms

56 bytes from 10.1.1.2: icmp_seq=4 ttl=255 time=1.000 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 = 0.000/2.600/7.000/2.577 ms

The output indicates that Router A and Router B have successfully connected through the CE1 interfaces in unchannelized E1 mode.

Configuration files

·     Router A:

#

controller E1 3/1/1

 clock master

 using e1

#

controller E1 3/1/2

 clock master

 using e1

#

interface Serial3/1/1:0

 ppp mp MP-group3/1/1

 link-protocol ppp

#

interface Serial3/1/2:0

 ppp mp MP-group3/1/1

 link-protocol ppp

#

interface MP-group3/1/1

 ip address 10.1.1.1 255.255.255.0

#

·     Router B:

#

controller E1 3/1/1

 using e1

#

controller E1 3/1/2

 using e1

#

interface Serial3/1/1:0

 ppp mp MP-group3/1/1

 link-protocol ppp

#

interface Serial3/1/2:0

 ppp mp MP-group3/1/1

 link-protocol ppp

#

interface MP-group3/1/1

 ip address 10.1.1.2 255.255.255.0

#

Example: Configuring CE1 interfaces in channelized CE1 mode for connectivity

Applicable hardware and software versions

This configuration example is applicable to high-end routers running Release 838x or later.

Network configuration

As shown in Figure 2, Router A and Router B are connected through CE1 interfaces, and the links run the PPP protocol. Bind the links into an MP link through binding the links to an MP-group interface.

Figure 2 Network diagram

 

Analysis

·     Configure the CE1 interfaces to operate in channelized CE1 mode, and bind the timeslots of each CE1 interface into a channel set. Then, the system will automatically create synchronous serial interfaces.

·     Create an MP-group interface, and assign the synchronous serial interfaces to the MP-group interface for MP bundling.

Restrictions and guidelines

When binding the timeslots of the CE1 interfaces on Router A and Router B, make sure the bound timeslots are consistent on both ends.

Procedures

Configuring Router A

1.     Configure CE1 interfaces:

# Configure the clock mode as master for CE1 interface E1 3/1/1. Configure it to operate in channelized CE1 mode, and bind timeslots 1 through 15 of interface E1 3/1/1 into channel set 1. Then, the system will automatically create synchronous serial interface Serial 3/1/1:1.

<RouterA> system-view

[RouterA] controller e1 3/1/1

[RouterA-E1 3/1/1] clock master

[RouterA-E1 3/1/1] using ce1

[RouterA-E1 3/1/1] channel-set 1 timeslot-list 1-15

[RouterA-E1 3/1/1] quit

# Configure the clock mode as master for CE1 interface E1 3/1/2. Configure it to operate in channelized CE1 mode, and bind timeslots 1 through 15 of interface E1 3/1/2 into channel set 1. Then, the system will automatically create synchronous serial interface Serial 3/1/2:1.

[RouterA] controller e1 3/1/2

[RouterA-E1 3/1/2] clock master

[RouterA-E1 3/1/2] using ce1

[RouterA-E1 3/1/2] channel-set 1 timeslot-list 1-15

[RouterA-E1 3/1/2] quit

2.     Configure MP bundling:

# Create an MP-group interface, and assign IP address 10.1.1.1/24 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 3/1/1:1 to interface MP-group 3/1/1.

[RouterA] interface serial 3/1/1:1

[RouterA-Serial3/1/1:1] link-protocol ppp

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

[RouterA-Serial3/1/1:1] undo shutdown

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

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

[RouterA] interface serial 3/1/2:1

[RouterA-Serial3/1/2:1] link-protocol ppp

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

[RouterA-Serial3/1/2:1] undo shutdown

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

Configuring Router B

1.     Configure CE1 interfaces:

# Configure CE1 interface E1 3/1/1 to operate in channelized CE1 mode, and bind timeslots 1 through 15 of interface E1 3/1/1 into channel set 1. Then, the system will automatically create synchronous serial interface Serial 3/1/1:1.

<RouterB> system-view

[RouterB] controller e1 3/1/1

[RouterB-E1 3/1/1] using ce1

[RouterB-E1 3/1/1] channel-set 1 timeslot-list 1-15

[RouterB-E1 3/1/1] quit

# Configure CE1 interface E1 3/1/2 to operate in channelized CE1 mode, and bind timeslots 1 through 15 of interface E1 3/1/2 into channel set 1. Then, the system will automatically create synchronous serial interface Serial 3/1/2:1.

[RouterB] controller e1 3/1/2

[RouterB-E1 3/1/2] using ce1

[RouterB-E1 3/1/2] channel-set 1 timeslot-list 1-15

[RouterB-E1 3/1/2] quit

2.     Configure MP bundling:

# Create an MP-group interface, and assign IP address 10.1.1.1/24 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 3/1/1:1 to interface MP-group 3/1/1.

[RouterB] interface serial 3/1/1:1

[RouterB-Serial3/1/1:1] link-protocol ppp

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

[RouterB-Serial3/1/1:1] undo shutdown

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

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

[RouterB] interface serial 3/1/2:1

[RouterB-Serial3/1/2:1] link-protocol ppp

[RouterB-Serial3/1/2:1] ppp mp mp-group 3/1/1

[RouterB-Serial3/1/2:1] undo shutdown

[RouterB-Serial3/1/2:1] quit

Verifying the configuration

1.     Display MP information on Router A.

[RouterA] display ppp mp

Template: MP-group3/1/1

max-bind: 31, fragment: enabled, min-fragment: 128

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

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

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

  Bundle Up Time: 2023/05/16  10:23:08:696

  0 lost fragments, 5 reordered, 0 unassigned, 0 interleaved

  Sequence: 4 (rcv)/5 (sent)

  Active member channels: 1 members

        Serial3/1/1:1            Up-Time:2023/05/16  10:23:08:697

        Serial3/1/2:1            Up-Time:2023/05/16  10:23:08:700

2.     Ping the peer IP address from Router A.

[RouterA] ping 20.1.1.2

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=4.000 ms

56 bytes from 20.1.1.2: icmp_seq=1 ttl=255 time=1.000 ms

56 bytes from 20.1.1.2: icmp_seq=2 ttl=255 time=0.000 ms

56 bytes from 20.1.1.2: icmp_seq=3 ttl=255 time=7.000 ms

56 bytes from 20.1.1.2: icmp_seq=4 ttl=255 time=1.000 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 = 0.000/2.600/7.000/2.577 ms

The output indicates that Router A and Router B have successfully connected through the CE1 interfaces in channelized CE1 mode.

Configuration files

·     Router A:

#

controller E1 3/1/1

 clock master

 channel-set 1 timeslot-list 1-15

#

controller E1 3/1/2

 clock master

 channel-set 1 timeslot-list 1-15

#

interface Serial3/1/1:1

 ppp mp MP-group3/1/1

 link-protocol ppp

#

interface Serial3/1/1:1

 ppp mp MP-group3/1/1

 link-protocol ppp

#

interface MP-group3/1/1

 ip address 20.1.1.1 255.255.255.0

#

·     Router B:

#

controller E1 3/1/1

 channel-set 1 timeslot-list 1-15

#

controller E1 3/1/2

 channel-set 1 timeslot-list 1-15

#

interface Serial3/1/1:1

 ppp mp MP-group3/1/1

 link-protocol ppp

#

interface Serial3/1/2:1

 ppp mp MP-group3/1/1

 link-protocol ppp

#

interface MP-group3/1/1

 ip address 20.1.1.2 255.255.255.0

#