4000 Router Series MPLS Configuration Guide

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[PE1-LoopBack0] quit

[PE1] interface pos 5/1

[PE1-POS5/1] ip address 30.1.1.1 24

[PE1-POS5/1] isis enable 1

[PE1-POS5/1] mpls enable

[PE1-POS5/1] mpls ldp enable

[PE1-POS5/1] mpls ldp transport-address interface

[PE1-POS5/1] quit

[PE1] bgp 100

[PE1-bgp] peer 4.4.4.9 as-number 100

[PE1-bgp] peer 4.4.4.9 connect-interface loopback 0

[PE1-bgp] address-family vpnv4

[PE1-bgp-vpnv4] peer 4.4.4.9 enable

[PE1-bgp-vpnv4] quit

[PE1-bgp] quit

# Configure PE 2 in the same way that PE 1 is configured. (Details not shown.)

After completing the configurations, execute commands display mpls ldp peer, display bgp peer

vpnv4, and display isis peer on either PE 1 or PE 2. The output shows that the LDP session has been

established, the BGP peer relationship has been established and reached the Established state,

and the IS-IS neighbor relationship has been established.

Take PE 1 as an example:

[PE1] display mpls ldp peer

Total number of peers: 1

Peer LDP ID State LAM Role GR MD5 KA Sent/Rcvd

4.4.4.9:0 Operational DU Active Off Off 8/8

[PE1] display bgp peer vpnv4

BGP local router ID: 3.3.3.9

Local AS number: 100

Total number of peers: 1 Peers in established state: 1

Peer AS MsgRcvd MsgSent OutQ PrefRcv Up/Down State

4.4.4.9 100 3 6 0 0 00:00:32 Established

[PE1] display isis peer

Peer information for ISIS(1)

----------------------------

System Id: 0000.0000.0005

Interface: POS5/1 Circuit Id: 0000.0000.0005.02

State: Up HoldTime: 8s Type: L1(L1L2) PRI: 64

System Id: 0000.0000.0005

Interface: POS5/1 Circuit Id: 0000.0000.0005.02

State: Up HoldTime: 8s Type: L2(L1L2) PRI: 64

2. Configure the customer VPN—enable IS-IS and enable LDP between PE 3 and CE 1, and between

PE 4 and CE 2:

# Configure PE 3.