INE R&S ATC043 - RIP Overview, RIP Versions, RIP Auto-Summary

RIP Overview

•Distance Vector IGP
–Uses split-horizon,poison reverse, count to infinity
–UDP port 520 for transport

•Two versions
–RIPv1
  •Classful
  •Updates as broadcast
–RIPv2
  •Classless
  •Updates as multicast to 224.0.0.9

Enabling RIP

•Enable the global process
–router rip

•Enable the interface process
–network [address]
–Matches major network only

•Verification
–show ip protocols
–show ip rip database
–debug ip rip

RIP Versions

•Default processing
–Send version 1 updates
–Listen for versions 1 & 2 updates

•Modifyingthe version
–version process level
–ip rip receive version interface level
–ip rip send version interface level

•Verification
–show ip protocols

RIP Auto-Summary

•RIPv2 is classless but does automatic classful summarization by default
–Disabled with no auto-summary under process

•VLSM is supported within the same major network

•Advertisements between major network boundaries are summarized to classful boundary
–Can result in traffic blackholes