AI2524 Router Card User’s Manual

zES hello packets and IS hello packets are sent without options. Op- tions in received packets are ignored.

ISs and ESs periodically send out hello packets to advertise their avail- ability. The frequency of these hello packets can be configured.

The recipient of a hello packet creates an adjacency entry for the sys- tem that sent it. If the next hello packet is not received within the in- terval specified, the adjacency times out and the adjacent node is considered unreachable. A default rate has been set for hello packets and packet validity, but it can be changed.

In global configuration mode, change the defaults:

zSpecify the rate at which ES hello and IS hello packets are sent. clns configuration-timeseconds

zAllow the sender of an ES hello or IS hello packet to specify the length of time you consider the information in these packets to be valid.

clns holding-time seconds

A default rate has been set for the ES Configuration Timer (ESCT) op- tion, but it can be changed.

In interface configuration mode, specify how often the end system should transmit ES hello packet PDUs:

clns esct-time seconds

Page 9-50

August 1997

 

2524UM

Page 208
Image 208
AIS AI2524 user manual Clns holding-time seconds, Clns esct-time seconds