Tuning And Optimizing Is-Is Networks; Configuration Prerequisites; Specifying The Interval For Sending Is-Is Hello Packets - HP VSR1000 Configuration Manual

You can configure IS-IS to advertise routes from Level-2 to Level- 1 , and to not advertise routes from Level- 1
to Level-2.
To configure IS-IS route leaking:
Step
1. Enter system view.
2. Enter IS-IS IPv4 unicast
address family view.
3. Configure route
leaking from Level- 1 to
Level-2.
4. Configure route
leaking from Level-2 to
Level- 1 .

Tuning and optimizing IS-IS networks

Configuration prerequisites

Before you tune and optimize IS-IS networks, complete the following tasks:
Configure IP addresses for interfaces to ensure IP connectivity between neighboring nodes.
•
Enable IS-IS.
•

Specifying the interval for sending IS-IS hello packets

If a neighbor does not receive any 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.
To specify the interval for sending hello packets:
Step
1. Enter system view.
2. Enter interface view.
3. Specify the interval for
sending hello packets.
Command
system-view
1. isis [ process-id ] [ vpn-instance
vpn-instance-name ]
2. cost-style { wide | wide-compatible }
3. address-family ipv4 [ unicast ]
import-route isis level-1 into level-2 [ filter-policy
{ acl-number | prefix-list prefix-list-name |
route-policy route-policy-name } | tag tag ] *
import-route isis level-2 into level-1 [ filter-policy
{ acl-number | prefix-list prefix-list-name |
route-policy route-policy-name } | tag tag ] *
Command
system-view
interface interface-type
interface-number
isis timer hello seconds [ level-1 |
level-2 ]
138
Remarks
N/A
N/A
By default, IS-IS advertises
routes from Level-1 to
Level-2.
By default, IS-IS does not
advertise routes from
Level-2 to Level-1.
Remarks
N/A
N/A
The default setting is 10 seconds.
The interval between hello packets
sent by the DIS is 1/3 the hello
interval set with the isis timer hello
command.