RIP overview
Distance Vector IGP, split-horizon,
poison reverse and count to infinity, UDP/520
RIPv1 : broadcast, classfull
RIPv2 : 224.0.0.9, classless
max Hop-count = 16
Default :
RIPv1, send RIPv1 updates, listen to
RIPv1 and RIPv2 updates
Modify
the version
Use commands : version , ip rip receive
version and ip rip send version
Split-Horizon
Updates received in an interface won’t
be sent back out the same interface
-> Undesirable on Partial Mesh NBMA (FR H&S)
Split-Horizon is enabled by default except on FR main interface.
To disable Split-Horizon : no ip
split-horizon.
RIP
Timers
Global cmd : timer basic [update] [invalid] [holddown] [flush]
Update = 30s
invalid and holddown = 180s (so
invalid=holddown)
flush = 240s
Interface level : ip rip advertise [interval]