Configuring the Loopback Interface and Router ID for BGP for VPWS

To configure the loopback interface and router ID on the PE router:

  1. Configure a loopback interface on the PE router and assign an IP address to the interface.
    host1(config)#interface loopback 0 host1(config-if)#ip address host1(config-if)#exit
  2. Assign the router ID using the IP address you configured for the loopback interface.
    host1(config)#ip router-id

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