H3C Technologies H3C S10500 Series Switches - Manual (Page 345)

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To do… Use the command… Remarks
Specify an AS path ACL to filter
routing information imported from
an IPv6 peer or peer group peer { ipv6-group-name |
ipv6-address } as-path-acl
as-path-acl-number import
Required
Not specified by default.
Specify an IPv6 prefix list to filter
routing information imported from
an IPv6 peer or peer group
peer { ipv6-group-name |
ipv6-address } ipv6-prefix
ipv6-prefix-name import
Required
Not specified by default.
Specify the upper limit of prefixes
allowed to receive from an IPv6
peer or peer group
peer { ipv6-group-name |
ipv6-address } route-limit limit
[ percentage ]
Optional
Unlimited by default.
NOTE:
•
Only routes passing the configured filtering can be added into the local IPv6 BGP routing table.
• Members of a peer group can have different inbound route filtering policies.
Configuring IPv6 BGP and IGP route synchronization
By default, upon receiving an iBGP route, an IPv6 BGP router checks the route’s next hop. If the next hop
is reachable, the IPv6 BGP router advertises the route to eBGP peers. If the synchronization feature is
configured, in addition to the reachability check of the next hop, the IPv6 BGP router must find an active
IGP route with the same destination network segment before it can advertise the iBGP route (use the
display ipv6 routing-table protocol command to check the IGP route state).
Follow these steps to configure IPv6 BGP and IGP route synchronization:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —
Enter IPv6 address family view ipv6-family —
Enable route synchronization between IPv6
BGP and IGP
synchronization
Required
Not enabled by default.
Configuring route dampening
Follow these steps to configure BGP route dampening:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —
Enter IPv6 address family view ipv6-family —
Configure IPv6 BGP route
dampening parameters
dampening [ half-life-reachable
half-life-unreachable reuse suppress ceiling |
route-policy route-policy-name ]*
Optional
Not configured by
default.