Configuring RIPv2 route summarization
Perform this task to summarize contiguous subnets into a summary network and sends the network to neighbors. The smallest metric among all summarized routes is used as the metric of the summary route.
Enabling RIPv2 automatic route summarization
Automatic summarization enables RIPv2 to generate a natural network for contiguous subnets. For example, suppose there are three subnet routes 10.1.1.0/24, 10.1.2.0/24, and 10.1.3.0/24. Automatic summarization automatically creates and advertises a summary route 10.0.0.0/8 instead of the more specific routes.
To enable RIPv2 automatic route summarization:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter RIP view. | rip [ process-id ] [ vpn-instance vpn-instance-name ] | N/A |
3. (Optional.) Enable RIPv2 automatic route summarization. | summary | By default, RIPv2 automatic route summarization is enabled. If subnets in the routing table are not contiguous, disable automatic route summarization to advertise more specific routes. |
Advertising a summary route
Perform this task to manually configure a summary route.
For example, suppose contiguous subnets routes 10.1.1.0/24, 10.1.2.0/24, and 10.1.3.0/24 exist in the routing table. You can create a summary route 10.1.0.0/16 on Ethernet 1/1 to advertise the summary route instead of the more specific routes.
To configure a summary route:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter RIP view. | rip [ process-id ] [ vpn-instance vpn-instance-name ] | N/A |
3. Disable RIPv2 automatic route summarization. | undo summary | By default, RIPv2 automatic route summarization is enabled. |
4. Return to system view. | Quit | N/A |
5. Enter interface view. | interface interface-type interface-number | N/A |
6. Configure a summary route. | rip summary-address ip-address { mask-length | mask } | By default, no summary route is configured. |