HP VPN Firewall Appliances Network Management Configuration Guide

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Configuring BFD for BGP
The following matrix shows the feature and hardware compatibility:
Hardware Com
p
atibilit
y
F1000-A-EI/F1000-S-EI No
F1000-E No
F5000 Yes
F5000-S/F5000-C No
VPN firewall modules No
20-Gbps VPN firewall modules No
BGP maintains neighbor relationships based on the keepalive timer and hold timer in seconds. It requires
that the hold time must be at least three times the keepalive interval. This mechanism makes link failure
detection slow. Once a failure occurs on a high-speed link, a large quantity of packets will be dropped
before routing convergence completes. BFD for BGP can solve this problem by fast detecting link failures
to reduce convergence time.
Before you configure BFD for BGP, you must enable BGP.
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. Enter BGP view or BGP-VPN
view.
• Enter BGP view:
bgp as-number
• Enter BGP-VPN view:
a. bgp as-number
b. ipv4-family vpn-instance
vpn-instance-name
N/A
3. Enable BFD to detect the link to
the specified BGP peer.
peer ip-address bfd By default, BFD is not enabled.
Displaying and maintaining BGP
Displaying BGP
Task Command Remarks
Display peer group information.
display bgp group [ group-name ] [ | { begin | exclude
| include } regular-expression ]
Available in
any view.
Display advertised BGP routing
information.
display bgp network [ | { begin | exclude | include }
regular-expression ]
Available in
any view.
Display AS path information.
display bgp paths [ as-regular-expression | | { begin |
exclude | include } regular-expression ]
Available in
any view.