H3C Technologies H3C S10500 Series Switches - Manual (Page 392)

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network. Then, the other routers in the network calculate the mappings between specific group ranges
and the corresponding RPs based on the RP-set. H3C recommends that you configure C-RPs on backbone
routers.
To guard against C-RP spoofing, you need to configure a legal C-RP address range and the range of IPv6
multicast groups to be served on the BSR. In addition, because every C-BSR has a chance to become the
BSR, you need to configure the same filtering policy on all C-BSRs in the IPv6 PIM-SM domain.
Follow these steps to configure a C-RP:
To do... Use the command... Remarks
Enter system view system-view —
Enter IPv6 PIM view pim ipv6 —
Configure an interface to be a C-RP
for IPv6 PIM-SM
c-rp ipv6-address [ { group-policy
acl6-number | scope scope-id } | priority
priority | holdtime hold-interval |
advertisement-interval adv-interval ] *
Required
No C-RPs are configured by
default.
Configure a legal C-RP address
range and the range of IPv6
multicast groups to be served
crp-policy acl6-number
Optional
No restrictions by default
NOTE:
•
When configuring a C-RP, ensure a relatively large bandwidth between this C-RP and the other devices
in the IPv6 PIM-SM domain.
• An RP can serve multiple IPv6 multicast groups or all IPv6 multicast groups. Only one RP can forward
IPv6 multicast traffic for an IPv6 multicast group at a moment.
Enabling embedded RP
With the embedded RP feature enabled, the router can resolve the RP address directly from the IPv6
multicast group address of an IPv6 multicast packets. This RP can replace the statically configured RP or
the RP dynamically calculated based on the BSR mechanism. Therefore, the DR does not need to identify
the RP address beforehand.
Perform this configuration on all routers in the IPv6 PIM-SM domain.
Follow these steps to enable embedded RP:
To do... Use the command... Remarks
Enter system view system-view —
Enter IPv6 PIM view pim ipv6 —
Enable embedded RP embedded-rp [ acl6-number ]
Optional
By default, embedded RP is enabled for IPv6
multicast groups in the default embedded RP
address scopes.
NOTE:
The default embedded RP address scopes are FF7x::/12 and FFFx::/12. Here “x” refers to any legal
address scope. For more information about the Scope field, see the chapter “Multicast overview.”