Configuring PIM Sparse Mode Remote Neighbors
You must use PIM sparse mode remote neighbors to run multicast services over BGP/MPLS VPNs.
![]() | Note: Although you can configure PIM sparse mode remote neighbors, you can not use these remote neighbors for BGP/MPLS VPNs. |
To configure a pair of E Series routers to act as PIM remote neighbors:
- On one router, specify the other router to be a remote
neighbor, and identify the IP address of the interface on the other
router that is used for the connection to this router.host1(config-router):boston#remote-neighbor 1001::1 sparse-mode
- Specify the location of the local interface
whose address is used as the source address for the PIM connection
to a remote neighbor.host1(config-router-rn):boston#update-source atm 2/1.108
- (Optional) Specify how
often the router sends hello messages to the remote neighbor.host1(config-router-rn):boston#query-interval 40
- Repeat Steps 2 to 3 for the other router.
query-interval
- Use to specify how often the router sends hello messages to remote neighbors.
- Examplehost1(config-router-rn)#query-interval 40
- Use the no version to restore the default setting, 30 seconds.
- See query-interval.
remote-neighbor
- Use to specify a remote neighbor for PIM sparse mode.
- Specify the IP address of the interface on the remote neighbor that PIM uses as the source address for the connection to this router.
- Examplehost1(config-router)#remote-neighbor 1001::1 sparse-mode
- Use the no version to remove the remote neighbor and any attributes configured for the remote neighbor.
- See remote-neighbor.
update-source
- Use to specify the PIM interface whose local address is used as the source address for the PIM connection to a remote neighbor.
- You can use the same source address to form neighbor adjacencies with more than one PIM remote neighbor.
- You must use the IPv6 address of this interface when issuing the remote-neighbor command on the remote neighbor.
- Examplehost1(config-router-rn)#update-source loopback 5
- Use the no version to delete
the source address from the connection to the remote neighbor.
Configuration Example
This example uses the configuration shown in Figure 21. Two E Series routers called router Boston and router Chicago are running PIM and are connected by MPLS tunnels. To configure the routers as PIM remote neighbors:
- Specify that router Chicago will be a remote neighbor
of router Boston, and identify the IP address on router Chicago that
will transmit datagrams to router Boston.boston(config-router)#remote-neighbor 1001::1 sparse-mode
- Specify the location of the interface that will transmit
datagrams from router Boston to router Chicago.boston(config-router-rn)#update-source atm 2/1.108
- Specify that router Boston will send hello messages to
router Chicago every 40 seconds.boston(config-if)#ipv6 pim query-interval 40
- Specify that router Boston will be a remote neighbor of
router Chicago, and identify the IP address on router Boston that
will transmit datagrams to router Chicago.chicago(config-router)#remote-neighbor 2001::1 sparse-mode
- Specify the location of the interface that will transmit
datagrams from router Chicago to router Boston.chicago(config-router-rn)#update-source atm 2/1.95
- Specify that router Chicago will send hello messages to
router Boston every 40 seconds.chicago(config-if)#ipv6 pim query-interval 40
- See update-source.
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