Checking The Availability Of Next-Hop Gateways - Cabletron Systems IA1100 User's Reference Manual

To set the IP policy action with respect to dynamic or statically configured routes, enter
one of the following commands in Configure mode:
Cause packets matching the
profile to use the IP policy route
first. If the next-hop gateway is
not reachable, use the dynamic
route instead.
Route packets matching the
profile using dynamic routes
first. If a dynamic route is not
available, then route packets
matching the profile using the IP
policy gateway.
Cause packets matching the
profile to use the IP policy route.
If the next-hop gateway is not
reachable, then drop the packets.
Drop packets matching the
profile.
Drop packets that do not match
any profile.
Do not use policy routing for
packets matching this ACL.
Forward using dynamic routes.

Checking the Availability of Next-Hop Gateways

The IA can check the availability of next-hop gateways by querying them with
ICMP_ECHO_REQUESTS. Only gateways that respond to these requests are used for
forwarding packets. To configure the IA to do this, enter the following command in
Configure mode:
Periodically check the
availability of next-hop
gateways.
Note: Some hosts may have disabled responding to ICMP_ECHO packets. Make sure
each next-hop gateway can respond to ICMP_ECHO packets before using this
option.
Internet Appliance User Reference Manual
Chapter 10: IP Policy-Based Forwarding Configuration Guide
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<name> <profile>
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