AIS Router AI2524 - Manual (Page 190)

AI2524 Router Card User’s Manual
Page 9-32 August 1997
2524UM
Set the Retransmission Interval
In interface configuration mode, configure the number of seconds be
tween retransmission of LSPs for point-to-point links.
isis retransmit-interval seconds
The value you specify should be an integer greater than the expected
round-trip delay between any two routers on the network. The setting
of this parameter should be conservative, or needless retransmission
will result. The value you determine should be larger for serial lines
and virtual links.
Specify Designated Router Election
You can configure the priority to use for designated router election.
Priorities can be configured for Level1 an d Level2 individually. Th
designated router enables a reduction in the number of adjacencies re-
quired on a multiaccess network, which in turn reduces the amount of
routing protocol traffic and the size of the topology database.
In interface configuration mode, configure the priority to use for des-
ignated router election:
isis priority value {level-1 | level-2}
Specify the Interface Circuit Type
It is normally not necessary to configure this feature because the IS-IS
protocol automatically determines area boundaries and keeps L evel1
and Leve l2 routing separate. However, you can specify the adjacency
levels on a specified interface.
In interface configuration mode, configure the adjacency for neigh-
bors on the specified interface:
isis circuit-type {level-1 | level-1-2 |
level-2-only}
If you specify Level 1, a Level 1 adjacency is established if there is at
least one area address common to both this node and its neighbors.
If you specify both Le vel1 and L evel2 (the default value), a Level1
and 2 adjacency is established if the neighbor is also configured as
both Leve l1 and Lev el2 and there is at least one area in common. If
there is no area in common, a Leve l2 adjacency is established.
If you specify Leve l2 only, a Le vel2 adjacency is established. If the
neighbor router is a Leve l1 router, no adjacency is established.