Enabling Trap; Enabling Logging Of Session State Changes; Configuring Bfd For Bgp - HPE FlexNetwork HSR6800 Configuration Manual

Step
Enter system view.
1.
Enter BGP view.
2.
Enable BGP NSR.
3.

Enabling trap

After trap is enabled for BGP, BGP generates Level-4 traps to report important events. The
generated traps are sent to the information center of the device. The output rules of the traps
(whether to output the traps and the output direction) are determined according to the information
center configuration. (For information center configuration, see Network Management and
Monitoring Configuration Guide.)
To enable trap:
Step
Enter system view.
1.
Enable trap for BGP.
2.

Enabling logging of session state changes

This task allows you to enable BGP to log session establishment and disconnection events. You can
use the display bgp ipv4 peer log-info command to view the log information.
To enable the logging of session state changes:
Step
Enter system view.
1.
Enter BGP view.
2.
Enable the logging of
3.
session state changes
globally.
Enter BGP-VPN instance
4.
view.
Enable the logging of
5.
session state changes for a
peer or peer group.

Configuring BFD for BGP

BGP maintains neighbor relationships based on the keepalive timer and holdtime timer, which are
set in seconds. BGP defines that the holdtime interval must be at least three times the keepalive
interval. This mechanism makes link failure detection rather slow; once a failure occurs on a
high-speed link, a large quantity of packets are dropped. BFD resolves this issue by detecting links
between neighbors quickly to reduce convergence time upon link failures.
Command
system-view
bgp as-number
non-stop-routing
Command
system-view
snmp-agent trap enable bgp
Command
system-view
bgp as-number
log-peer-change
ipv4-family vpn-instance
vpn-instance-name
peer { group-name | ip-address }
log-change
232
Remarks
N/A
N/A
Disabled by default.
Remarks
N/A
Optional.
Enabled by default.
Remarks
N/A
N/A
Optional.
Enabled by default.
Optional.
Optional.
Enabled by default.