3Com Switch 8800 Family Configuration Guide

352 CHAPTER 32: INTEGRATED IS-IS CONFIGURATION
By default, the LSP packet is transmitted every five seconds over the p2p link.
Configuring number of invalid Hello packets for the interface
The router maintains the adjacency by sending/receiving Hello packets. When
receiving no Hello packets from the peer within a time interval, the local router
regards the neighbors are invalid. The time interval is called Holddown time for the
IS-IS.
Setting invalid number of Hello packets can adjust the Holddown time in the IS-IS.
That is to say, after continuously receiving no specified number of Hello packets,
the router regards the neighbors are invalid.
By default, the number of the invalid Hello packets is set to 3.
If this command does not specify level-1 or level-2, the system regard the invalid
Hello packets are set for both Level-1 and Level-2 routers.
Setting IS-IS
Authentication
Setting interface authentication
The authentication password set on the interface is mainly used in the Hello
packet so as to confirm the validity and correctness of its peers. The authentication
passwords at the same level of all the interfaces of a network should be identical.
Perform the following configuration in interface view.
By default, the interface is not configured with any authentication password nor
performs authentication. If the level is not specified, it defaults to setting the
authentication password of Level-1.
Tabl e 328 Set LSP packet retransmission interval
Operation Command
Set the retransmission interval of the LSP
packet over p2p links
isis timer retransmit seconds
Restore the default retransmission interval of
the LSP packet over p2p links
undo isis timer retransmit
Tabl e 329 Set number of invalid Hello packets for the interface
Operation Command
Set the number of invalid Hello packets
isis timer holding-multiplier value [ level-1
| level-2 ]
Restore the default setting
undo isis timer holding-multiplier [ level-1
| level-2 ]
Tabl e 330 Set interface authentication password
Operation Command
Set authentication password
isis authentication-mode { simple | md5 } password [ {
level-1 | level-2 } [ ip | osi ] ]
Delete authentication-mode
password
undo isis authentication-mode { simple | md5 } password [
{ level-1 | level-2 } [ ip | osi ] ]