Specifications

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Cisco MWR 2941 Mobile Wireless Edge Router Software Configuration Guide, Release 12.2(33)MRB
OL-21227-02
Chapter 4 Configuring the Cisco MWR 2941 Router Using the CLI
Configuration Sequence
Configuring Multicast VPN
The Multicast VPN Extranet Support feature enables service providers to distribute IP multicast content
originated from one enterprise site to other enterprise sites. This feature enables service providers to
offer the next generation of flexible extranet services, helping to enable business partnerships between
different enterprise VPN customers. Using this feature, service providers can offer multicast extranet
contracts to meet various business partnership requirements, including short-term, annual, and rolling
contracts.
Follow these steps to configure a Multicast VPN on the Cisco MWR 2941.
Step 1 Enter enable mode.
Router> enable
Step 2 Enter configuration mode.
Router# configure terminal
Router(config)#
Step 3 Use the ip multicast-routing command to enable multicast routing.
Router(config)# ip multicast-routing
Step 4 Use the ip multicast-routing vrf command to specify a Multicast Virtual Private Network (VPN)
routing and forwarding (VRF) instance.
Router(config)# ip multicast-routing vrf vrf1
Step 5 Use the ip vrf command to enter VRF configuration mode and define the VPN routing instance by
assigning a VRF name.
Router(config)# ip vrf vrf1
Step 6 Use the rd command to create routing and forwarding tables. Specify the route-distinguisher argument
to add an 8-byte value to an IPv4 prefix to create a VPN IPv4 prefix. You can enter an RD in either of
these formats:
• 16-bit autonomous system (AS) number: your 32-bit number, for example, 101:3
• 32-bit IP address: your 16-bit number, for example, 192.168.122.15:1
Router(config-vrf)# rd 55:2222
Step 7 Use the route-target command to create a route-target extended community for a VRF.
• The import keyword imports routing information from the target VPN extended community.
• The route-target-ext-community argument adds the route-target extended community attributes to
the VRF’s list of import, export, or both (import and export) route-target extended communities.
For content to be distributed from the source MVRF to the receiver MVRF, you must configure the
same unicast routing policy on the source and receiver PE routers to import routes from the source
VRF to the receiver VRF.
Router(config-vrf)# route-target import 55:1111
Step 8 Use the mdt default command to configure a multicast group address range for data multicast
distribution tree (MDT) groups for a VRF. A tunnel interface is created as a result of this command; by
default, the destination address of the tunnel header is the group-address argument.
Router(config-vrf)# mdt default 232.3.3.3