Brocade BigIron RX Series Configuration Guide - Manual (Page 805)

BigIron RX Series Configuration Guide 727
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Configuring DVMRP
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BigIron RX(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.
BigIron RX(config)# interface ethernet 1/4
BigIron RX(config-if-e10000-1/4)# ip dvmrp ttl-threshold 60
Syntax: [no] ip dvmrp 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.
To set a metric of 15 for a DVMRP interface, enter the following.
BigIron RX(config)# interface e 3/5
BigIron RX(config-if-e10000-3/5)# ip dvmrp metric 15
Syntax: [no] ip dvmrp metric <1-31>
Enabling advertising
By default, advertising is enabled. You can turn off (disable) the advertisement of a local route on
an interface
To disable advertising on an interface, enter the following.
BigIron RX(config-if-e10000-1/4)# ip dvmrp advertise-local off
Syntax: [no] ip dvmrp advertise-local off