Command:

ip summary-address rip


Mode:

Router(config-if)#


Syntax:

ip summary-address rip ip-address ip-network-mask
no ip summary-address rip ip-address ip-network-mask

 

Syntax Description:

ip-address IP address to be summarized.
ip-network-mask IP network mask that drives route summarization for the specified IP address.

 

Command Description:

To configure a Cisco router running Routing Information Protocol (RIP) to advertise a summarized local IP address pool on a network access server so that the address pool can be provided to dialup clients and specify the IP address and network mask that identify the routes to be summarized, use the ip summary-address rip command in router configuration mode. To disable the configuration of the ip summary-address rip command, use the no form of this command.


Example:

In the following example the major network is 10.0.0.0. The summary address 10.2.0.0 overrides the autosummary address of 10.0.0.0, so that 10.2.0.0 is advertised out Ethernet interface 1 and 10.0.0.0 is not advertised.

Router(config)# router rip
Router(config-router)# network 10.0.0.0
Router(config-router)# neighbor 2.2.2.2 peer-group mygroup
Router(config-router)# exit
Router(config)# router interface e1
Router(config-if)# ip address 10.1.1.1 255.255.255.0
Router(config-if)# ip summary-address rip 10.2.0.0 255.255.0.0
Router(config-if)# no ip split-horizon


Misconceptions:

If split horizon is enabled, neither autosummary nor interface summary addresses (those configured with the ip summary-address rip command) are advertised.


Related Commands:

auto-summary
ip split-horizon RIP

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