H3C Technologies H3C SR8800 - Manual (Page 381)

365
Step Command Remarks
19. Display routes from or to the
6PE peer or peer group.
display bgp ipv6 routing-table peer
ipv4-address { advertised-routes |
received-routes } [ network-address
prefix-length | statistic ] [ | { begin |
exclude | include }
regular-expression ]
Optional
Available in any view
20. Perform soft reset on the
inbound or outbound BGP
6PE connection.
refresh bgp ipv6 ipv4-address { export
| import } Optional
Available in user view
21. Reset a BGP 6PE connection. reset bgp ipv6 ipv4-address
Optional
Available in user view
Configuring BFD for IPv6 BGP
IPv6 BGP maintains neighbor relationships based on the keepalive timer and holdtime timer, which are
set in seconds. IPv6 BGP defines that the holdtime interval must be at least three times the keepalive
interval. This mechanism makes the detection of a link failure rather slow and thus causes a large
quantity of packets to be dropped especially when the failed link is a high-speed link. You can enable
BFD to detect the link to a peer. BFD can quickly detect any link failure and thus reduce network
convergence time.
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.
ipv6-family N/A
4. Enable BFD for the specified
BGP peer.
peer ipv6-address bfd
Not enabled for any BGP peer by
default
NOTE:
•
Before you configure BFD for IPv6 BGP, you must enable BGP.
• After a link failure occurs, BFD may 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.
Displaying and maintaining IPv6 BGP
Displaying BGP