Controlling Route Exchanges - Cisco Catalyst 3550 series Software Configuration Manual

Chapter 34 Configuring IP Multicast Routing

Controlling Route Exchanges

These sections describe how to tune the Cisco device advertisements of DVMRP routes:
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Limiting the Number of DVMRP Routes Advertised
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:
Command
Step 1
configure terminal
Step 2 ip dvmrp route-limit count
Step 3 end
Step 4
show running-config
Step 5
copy running-config startup-config
To configure no route limit, use the no ip dvmrp route-limit global configuration command.
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Limiting the Number of DVMRP Routes Advertised, page 34-53
Changing the DVMRP Route Threshold, page 34-54
Configuring a DVMRP Summary Address, page 34-54
Disabling DVMRP Autosummarization, page 34-56
Adding a Metric Offset to the DVMRP Route, page 34-56
Configuring Advanced DVMRP Interoperability Features
Purpose
Enter global configuration mode.
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.
Catalyst 3550 Multilayer Switch Software Configuration Guide
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