Configuring Bfd For Is-Is; Configuring Is-Is Frr - HP 5500 EI series Configuration Manual

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Step
2.
Enable IS-IS and
enter IS-IS view.
3.
Enable IS-IS GR.
4.
(Optional.) Suppress
the SA bit during
restart.
5.
(Optional.) Configure
the T1 timer.
6.
(Optional.) Configure
the T2 timer.
7.
(Optional.) Configure
the T3 timer.

Configuring BFD for IS-IS

BFD provides a single mechanism to quickly detect and monitor the connectivity of links between OSPF
neighbors, reducing network convergence time. For more information about BFD, see High Availability
Configuration Guide.
To configure BFD for IS-IS:
Step
1.
Enter system view.
2.
Enter interface view.
3.
Enable IS-IS on an interface.
4.
Enable BFD on an IS-IS
interface.

Configuring IS-IS FRR

A link or router failure on a path can cause packet loss and routing loop. IS-IS FRR enables fast rerouting
to minimize the failover time.
Command
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
graceful-restart
graceful-restart suppress-sa
graceful-restart t1 seconds count
count
graceful-restart t2 seconds
graceful-restart t3 seconds
Command
system-view
interface interface-type interface-number
isis enable [ process-id ]
isis bfd enable
149
Remarks
N/A
By default, the GR capability for IS-IS is
disabled.
By default, the SA bit is not suppressed.
By enabling the GR restarter to suppress the
Suppress-Advertisement (SA) bit in the hello
PDUs, the neighbors will still advertise their
adjacency with the GR restarter.
By default, the T1 timer is 3 seconds and can
expire 10 times.
By default, the T2 timer is 60 seconds.
By default, the T2 timer is 300 seconds.
Remarks
N/A
N/A
N/A
By default, an IS-IS interface
is not enabled with BFD.

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