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RIP

Configuration of the RIPv2 authentication

In this article I will configure, debug and shows the process of RIPv2 authentication.

 

Authentication methods

  1. Plain text
  2. MD5

 

Note 1: When using plain text authentication mode, make sure that the following parameters are matching on neighboring routers for successful authentication.

  • Key-string

  • Authentication mode



Possible bugs/limitations encountered in Cisco's RIP implementation


  1. Default route origination not working reliably.
  2. Automatic summarization turned on causes major networks to be propagated throughout the RIP domain with a metric of 1.
  3. Using RIPv2 on NBMA hub-and-spoke topology causes the hub router to rewrite the next hop field in the RIPv2 update to the IP address of the spoke router advertising the originalupdate, thereby creating reachability issues
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