Cisco Systems 3560 Manual De Usuario

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By default, only 7000 DVMRP routes are advertised over an interface enabled to run DVMRP (that is, 
a DVMRP tunnel, an interface where a DVMRP neighbor has been discovered, or an interface 
configured to run the ip dvmrp unicast-routing interface configuration command). 

Beginning in privileged EXEC mode, follow these steps to change the DVMRP route limit. This 
procedure is optional.

To configure no route limit, use the no ip dvmrp route-limit global configuration command.

By default, 10,000 DVMRP routes can be received per interface within a 1-minute interval. When that 
rate is exceeded, a syslog message is issued, warning that there might be a route surge occurring. The 
warning is typically used to quickly detect when devices have been misconfigured to inject a large 
number of routes into the MBONE. 

Beginning in privileged EXEC mode, follow these steps to change the threshold number of routes that 
trigger the warning. This procedure is optional.

Enter global configuration mode.

ip dvmrp route-limit count

Change the number of DVMRP routes advertised over an interface 
enabled for DVMRP. 

This command prevents misconfigured ip dvmrp metric interface 
configuration commands from causing massive route injection into the 
MBONE.

By default, 7000 routes are advertised. The range is 0 to 4294967295.

Return to privileged EXEC mode.

Verify your entries.

(Optional) Save your entries in the configuration file.

Enter global configuration mode.

ip dvmrp routehog-notification 
route-count

Configure the number of routes that trigger a syslog message.

The default is 10,000 routes. The range is 1 to 4294967295.

Return to privileged EXEC mode.

Verify your entries.

(Optional) Save your entries in the configuration file.