RIP problems (contd)
Black-holes:
- If one node goes broke and advertises route of zero to several key networks, all nodes immediately point to it.
How to install a fix in a distributed manner ??
- Require protocol to be “self-stabilizing” I.e even if some nodes are faulty, once they are isolated, the system should quickly return to normal operation
Broadcasts consume non-router resources
Does not support subnet masks (VLSMs)