Problems With Distance Vector

• In our example, a single outage occurred

• • Required 3 sets of broadcasts to fix
  • In the mean time, packets are delayed and/or dropped

• In a larger network, it could take much, much longer

• • Dependent on topology and link cost, weird things can happen

• Additionally, distance vector is prone to “count to infinity”

• • Part of the network becomes isolated
  • The isolated routers keep telling each other that they know how to get to the rest of the network
  • • But they don’t!
  • Routing loops are created