H3C Technologies H3C S12500 Series Switches - Manual (Page 394)

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BFD to detect the link to a peer. BFD can quickly detect any link failure and thus reduce network
convergence time.
After a link failure occurs, BFD might detect the failure before the system performs GR and as a result, GR
will fail. Therefore, if GR capability is enabled for IPv6 BGP, use BFD with caution. For more information
about BFD, see High Availability Configuration Guide.
IMPORTANT:
Before configuring BFD for IPv6 BGP, you must enable BGP.
To enable BFD for a BGP peer:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable BGP and enter BGP
view.
bgp as-number Not enabled by default.
3. Enter IPv6 address family view
or IPv6 BGP-VPN instance
view.
ipv6-family [ vpn-instance
vpn-instance-name ]
N/A
4. Enable BFD for the specified
BGP peer.
peer ipv6-address bfd
Not enabled for any BGP peer by
default.
Displaying and maintaining IPv6 BGP
Displaying BGP
Task Command Remarks
Display IPv6 BGP peer group
information. display bgp ipv6 group [ group-name ] [ | { begin
| exclude | include } regular-expression ] Available in any
view.
Display IPv6 BGP advertised
routing information. display bgp ipv6 network [ | { begin | exclude |
include } regular-expression ] Available in any
view.
Display IPv6 BGP AS path
information.
display bgp ipv6 paths [ as-regular-expression |
| { begin | exclude | include }
regular-expression ]
Available in any
view.
Display IPv6 BGP peer or peer
group information.
display bgp ipv6 peer [ group-name log-info |
ipv4-address verbose | ipv6-address { log-info |
verbose } | verbose ] [ | { begin | exclude |
include } regular-expression ]
Available in any
view.
Display the prefix entries in the
ORF information for the specified
BGP peer.
display bgp ipv6 peer { ip-address |
ipv6-address } received ipv6-prefix [ | { begin |
exclude | include } regular-expression ]
Available in any
view.
Display IPv6 BGP routing table
information.
display bgp ipv6 routing-table [ ipv6-address
prefix-length ] [ | { begin | exclude | include }
regular-expression ]
Available in any
view.