R2511-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V5)

364
Ste
p
Command Remarks
18. Display information about the
6PE peer or peer group.
display bgp ipv6 peer [ group-name
log-info | ipv4-address verbose ] [ |
{ begin | exclude | include }
regular-expression ]
Optional.
Available in any view.
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.
Before you configure BFD for IPv6 BGP, you must enable BGP.
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.
To enable BFD for a BGP peer:
Ste
p
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.