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AI2524 Router Card User’s Manual
Page 9-50 August 1997
2524UM
z
ES 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:
z
Specify the rate at which ES hello and IS hello packets are sent.
clns configuration-time
seconds
z
Allow 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