Re: [Cse461] Re: Question 1(a)

From: Janet Davis (jlnd_at_cs.washington.edu)
Date: Wed Feb 11 2004 - 15:28:02 PST

  • Next message: Abhinav Jain: "[Cse461] Q1"

    On Tue, 10 Feb 2004, Janet Davis wrote:

    > A routing loop means that, for some destination, the next-hops in the
    > nodes' routing tables form a loop. Temporary loops can form while routing
    > tables are being updated after a failure.
    >
    > In the case of Fishnet, this would mean a node sees the same packet twice.

    For the purposes of question 1(a), loops aren't a concern if the packet is
    flooded; it will still reach its destination. The problem is whether
    loops can form if you use learning. In this case, there might be only one
    copy of the packet going through the network. If it looped back to a node
    it had already been to, it would get dropped and would not reach its
    destination.

    Cheers,
    JAnet 

    -- 
Janet Davis
jlnd_at_cs.washington.edu
http://www.cs.washington.edu/homes/jlnd/
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