Foundry Networks FESX User Manual

Foundry Configuration Guide for the FESX, FSX, and FWSX
19 - 58 © Foundry Networks, Inc. December 2005
Modifying Trigger Interval
The Trigger Interval defines how often trigger updates, which reflect changes in the network topology, are sent.
Example changes in a network topology include router up or down or changes in the metric. Possible values are
from 5 – 30 seconds. The default value is 5 seconds.
To support the sending of trigger updates every 20 seconds, enter the following:
FastIron SuperX Router(config-dvmrp-router)# trigger-interval 20
Syntax: trigger-interval <5-30>
Modifying Default Route
To define the default gateway for DVMRP, enter the following:
FastIron SuperX Router(config-dvmrp-router)# default-gateway 192.35.4.1
Syntax: default-gateway <ip-addr>
Modifying DVMRP Interface Parameters
DVMRP global parameters come with preset values. The defaults work well in most networks, but you can modify
the following interface parameters if you need to:
•TTL
•Metric
• Advertising
Modifying the TTL
The TTL defines the minimum value required in a packet in order for the packet to be forwarded out the interface.
For example, if the TTL for an interface is set at 10 it means that only those packets with a TTL value of 10 or more
are forwarded. Likewise, if an interface is configured with a TTL Threshold value of 1, all packets received on that
interface are forwarded. Possible values are from 1 – 64. The default value is 1.
To set a TTL of 64, enter the following:
FastIron SuperX Router(config)# int e 1/4
FastIron SuperX Router(config-if-1/4)# ip dvmrp ttl 60
Syntax: ttl-threshold <1-64>
Modifying the Metric
The router uses the metric when establishing reverse paths to some networks on directly attached interfaces.
Possible values are from 1 – 31 hops. The default is 1.
NOTE: This command is not supported on Foundry Layer 2 Switches.
To set a metric of 15 for a DVMRP interface, enter the following:
FastIron SuperX Router(config)# interface 3/5
FastIron SuperX Router(config-if-3/5)# ip dvmrp metric 15
Syntax: ip dvmrp metric <1-31>
Enabling Advertising
You can turn the advertisement of a local route on (enable) or off (disable) on the interface. By default, advertising
is enabled.
To enable advertising on an interface, enter the following:
FastIron SuperX Router(config-if-1/4)# ip dvmrp advertise-local on

Foundry Networks FESX Specifications

General

Brand	Foundry Networks
Model	FESX
Category	Switch
Language	English