Your Service Provider Doesn’t Do What You Want
Problem
As an MPLS customer, you want to implement a feature like multicast or a particular PE-CE routing protocol that your service provider doesn’t support.
Solution
Some service providers support only a limited range of MPLS features. The most common missing features are specific routing protocols for PE-CE routing and multicast support. This example will assume that you want to pass OSPF and multicast through an MPLS network that supports only BGP:
Router-CE-A1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z. Router-CE-A1(config)#ip multicast-routing
Router-CE-A1(config)#interface
Router-CE-A1(config-if)#
FastEthernet0/0.1
encapsulation dot1Q
Router-CE-A1(config-if)#
101
ip address
Router-CE-A1(config-if)#
192.168.1.5 255.255.255.0
exit
Router-CE-A1(config)#interface Loopback
Router-CE-A1(config-if)#
1
ip address
Router-CE-A1(config-if)#
192.168.101.1 255.255.255.255
exit
Router-CE-A1(config)#interface Tunnel
Router-CE-A1(config-if)#
1
ip address
Router-CE-A1(config-if)#
192.168.152.1 255.255.255.252
tunnel source
Router-CE-A1(config-if)#
192.168.101.1
tunnel destination
Router-CE-A1(config-if)#
192.168.101.2
ip pim sparse-dense-mode
Router-CE-A1(config-if)#exit
Router-CE-A1(config)#router bgp
Router-CE-A1(config-router)#
65535
neighbor
192.168.1.1
remote-as
Router-CE-A1(config-router)#
100
network
Router-CE-A1(config-router)#
192.168.1.0
network
Router-CE-A1(config-router)#
192.168.101.1 mask 255.255.255.255
no synchronization ...
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