Tuning And Optimizing Is-Is Networks; Configuration Prerequisites; Specifying Intervals For Sending Is-Is Hello And Csnp Packets; Specifying The Is-Is Hello Multiplier - HPE 5800 Series Configuration Manual

If a filter policy is specified, only routes passing it can be advertised into Level-1 area.
You can specify a routing policy in the import-route isis level-2 into level-1 command to filter
routes from Level-2 to Level-1. Other routing policies specified for route reception and redistribution
does not affect the route leaking.
To configure IS-IS route leaking:
Step
Enter system view.
1.
Enter IS-IS view.
2.
Enable IS-IS route
3.
leaking.

Tuning and optimizing IS-IS networks

Configuration prerequisites

Before the configuration, complete the following tasks:
•
Configure IP addresses for interfaces, and make sure that all neighboring nodes are reachable
to each other at the network layer.
•
Enable IS-IS.
Specifying intervals for sending IS-IS hello and CSNP
packets
Step
Enter system view.
1.
Enter interface view.
2.
Specify the interval for
3.
sending hello packets.
Specify the interval for
4.
sending CSNP packets on
the DIS of a broadcast
network.

Specifying the IS-IS hello multiplier

If a neighbor receives no hello packets from the router within the advertised hold time, it considers
the router down and recalculates the routes. The hold time is the hello multiplier multiplied by the
hello interval.
Command
system-view
isis [ process-id ] [ vpn-instance vpn-instance-name ]
import-route isis level-2 into level-1 [ filter-policy
{ acl-number | ip-prefix ip-prefix-name | route-policy
route-policy-name } | tag tag ] *
Command
system-view
interface interface-type
interface-number
isis timer hello seconds [ level-1
| level-2 ]
isis timer csnp seconds [ level-1
| level-2 ]
132
Remarks
N/A
N/A
Disabled by
default.
Remarks
N/A
N/A
Optional.
10 seconds by default.
The interval between hello
packets sent by the DIS is 1/3 the
hello interval set with the isis
timer hello command.
Optional.
10 seconds by default.