AI2524 Router Card User’s Manual
Page 9-50 August 1997
2524UM
zES hello packets a nd IS he llo p acke ts a re sent without options. Op-
tions in received packets are ignored.
ISs and ESs periodically send out hello packets to ad v ertis e 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 hell o and IS hello pa ckets are sent.
clns configuration-time
seconds
zAllow the sender of an ES hello o r 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