H3C Technologies H3C S7500E Series Switches - Manual (Page 159)

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All the interfaces in the same VPN instance on the same router must work in the same PIM
mode.
z For details about the ip vpn-instance, route-distinguisher and ip binding vpn-instance
commands, see MPLS L3VPN Configuration Commands in the MPLS Command
Reference.
z For details about the multicast routing-enable command, see Multicast Routing and
Forwarding Configuration Commands in the IP Multicast Command Reference.
Configuring an RP
An RP can be manually configured or dynamically elected through the BSR mechanism. For a
large PIM network, static RP configuration is a tedious job. Generally, static RP configuration is
just a backup means for the dynamic RP election mechanism to enhance the robustness and
operation manageability of a multicast network.
Configuring a static RP
If there is only one dynamic RP in a network, manually configuring a static RP can avoid
communication interruption due to single-point failures and avoid frequent message exchange
between C-RPs and the BSR.
Perform this configuration on all the routers in the PIM-SM domain.
Follow these steps to configure a static RP:
To do… Use the command… Remarks
Enter system view system-view —
Enter public instance PIM view or
VPN instance PIM view
pim [ vpn-instance
vpn-instance-name ]
—
Configure a static RP
static-rp rp-address
[ acl-number ] [ preferred ]
Required
No static RP by default
To enable a static RP to work normally, you must perform this configuration on all the routers in
the PIM-SM domain and specify the same RP address.