4000 Router Series MPLS Configuration Guide

Figure 24 Network diagram

Configuration procedure

1. Configure IP addresses and masks for interfaces. (Details not shown.)

2. Configure IS-IS to advertise interface addresses, including the Loopback interface address:

# Configure Router A.

<RouterA> system-view

[RouterA] isis 1

[RouterA-isis-1] network-entity 00.0005.0000.0000.0001.00

[RouterA-isis-1] quit

[RouterA] interface ethernet 1/1

[RouterA-Ethernet1/1] isis enable 1

[RouterA-Ethernet1/1] quit

[RouterA] interface loopback 0

[RouterA-LoopBack0] isis enable 1

[RouterA-LoopBack0] quit

# Configure Router B.

<RouterB> system-view

[RouterB] isis 1

[RouterB-isis-1] network-entity 00.0005.0000.0000.0002.00

[RouterB-isis-1] quit

[RouterB] interface ethernet 1/1

[RouterB-Ethernet1/1] isis enable 1

[RouterB-Ethernet1/1] quit

[RouterB] interface ethernet 1/2

[RouterB-Ethernet1/2] isis enable 1

[RouterB-Ethernet1/2] quit

[RouterB] interface loopback 0

[RouterB-LoopBack0] isis enable 1

[RouterB-LoopBack0] quit

# Configure Router C.

<RouterC> system-view

[RouterC] isis 1