[manet] Re: OLSRv2 draft

> However it does motivate it by noting that in a very specific scenario
> this message is needed. That scenario is one where routers only arrive
> and depart. As such the case you provide is outside that scenario, and
> doesn’t consider it.

Ok, then let's add a new router Z:

       4
    A-----C
    |     |
    |     |
  1 |     | 1
    |     |
    |     |
    B-----Z
       1

A is going A-B-Z-C, B is going B-Z-C.  Router Z leaves the network,
B reroutes through A, the TC that B sends to A gets lost, and you've got
a persistent routing loop.

I know of two ways to solve the problem:

  - send periodic TCs, as in OLSR(v2);
  - use reliable flooding for distributing topolgy, as in OSPF and IS-IS.

If you have a novel solution, then I'm very much interested.

-- Juliusz

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