H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv6 Routing
H3C S7500E Series Ethernet Switches Chapter 5 IPv6 BGP Configuration
5-11
By default, when a BGP router receives an IBGP route, it only checks the reachability of
the route’s next hop before advertisement. If the synchronization feature is configured,
only the IBGP route is advertised by IGP can the route be advertised to EBGP peers.
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
Required
Enter IPv6 address family
view
ipv6-family —
Enable route
synchronization between
IPv6 BGP and IGP
synchronization
Required
Not enabled by default
5.4.7 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
Required
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
5.5 Configuring IPv6 BGP Route Attributes
This section describes how to use IPv6 BGP route attributes to modify BGP routing
policy. These attributes are:
z IPv6 BGP protocol preference
z Default LOCAL_PREF attribute
z MED attribute
z NEXT_HOP attribute
z AS_PATH attribute
5.5.1 Prerequisites
Before configuring this task, you have: