# Configuring DVMRP Limits

You can configure DVMRP and IGMP on the same interface. If you configure DVMRP and IGMP on an interface, the router determines that DVMRP owns the interface.

| Note: You cannot configure DVMRP and PIM on the same interface.

When you have enabled DVMRP processing on a VR, you can configure the following settings for that VR:

- The number of routes that the VR advertises on each interface.
- A maximum number of DVMRP routes at which the router generates a system log warning message and an SNMP trap.

ip dvmrp route-hog-notification

- Use to set the number of DVRMP routes that the router can record before it generates a system log warning message.
- The warning alerts you so you can identify routers that are injecting large numbers of routes into the MBone.
- Example
  host1:boston(config)#ip dvmrp route-hog-notification 5000
- Use the no version to restore the default value, 10,000 routes.
- See ip dvmrp route-hog-notification.

ip dvmrp route-limit

- Use to limit the number of routes that the router can advertise on each interface.
- Example
  host1:boston(config)#ip dvmrp route-limit 5000
- Use the no version to restore the default value, 7000 routes.
- See ip dvmrp route-limit.