Brocade Multi-Service IronWare Multicast Configuration Gui Instrukcja Użytkownika Pobierz pdf (Strona 109)

Multi-Service IronWare Multicast Configuration Guide 97

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Configuring DVMRP

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 Threshold

• Metric

• Advertising

Modifying the TTL threshold

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.

Brocade(config)# int e 1/4

Brocade(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.

Brocade(config)# interface e 3/5

Brocade(config-if-e10000-3/5)# ip dvmrp metric 15

Syntax: [no] ip dvmrp metric 1-31

Disabling advertising

You can disable the advertisement of a local route on the interface. By default, advertising is

enabled.

To disable advertising on an interface, enter the following.

Brocade(config-if-e10000-1/4)# ip dvmrp advertise-local off

Syntax: [no] ip dvmrp advertise-local off

Use the no option with this command to re-enable advertising.

Displaying DVMRP information

You can display the following DVMRP information:

• DVMRP group information

• DVMRP interface information

• DVMRP multicast cache information

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Brocade Multi-Service IronWare Multicast Configuration Gui Instrukcja Użytkownika Strona 109