Enable the auto-summary Option

1. Enable the auto-summary option in switch 1.

   SEFOS# configure terminal
   SEFOS(config)# router rip
   SEFOS(config-router)# auto-summary enable
   SEFOS(config-router)# end
   

2. Review the configuration information to ensure that the option is enabled.

   SEFOS# show ip protocols
    
   Routing Protocol is rip
    
   Vrf  default
    RIP2 security level is Maximum
    Redistributing : rip
    Output Delay is disabled
    Retransmission timeout interval is 5 seconds
    Number of retransmission retries is 36
    Default metric is 3
    Auto-Summarisation of routes is enabled
    Routing for Networks :
      10.0.0.0
    Routing Information Sources :
    Interface Specific Address Summarization :
    Trusted Neighors :
    Interface vlan1
     Sending updates every 30 seconds
     Invalid after 180 seconds
     Flushed after 120 seconds
     Send version is 1 2, receive version is 1 2
     Authentication type is none
     Split Horizon with poissoned reverse is enabled
     Restrcts default route installation
      Restricts default route origination