[Cerowrt-devel] [Babel-users] Lookingfor

Juliusz Chroboczek jch at pps.univ-paris-diderot.fr
Tue Mar 19 16:28:41 EDT 2013

> You will have to change babeld to only consider a slice of the network.

Manual aggregation can be done without changing anything.  On a border
router for the network, you say

  ip route add unreachable proto static

and in babeld.conf,

  out ip ge 25 deny

For reliability, you should also add some filtering rules to avoid
leaking local routes into the other subnets.

Automatic aggregation would be possible with just some minor changes
to the implementation (not the protocol), but deaggregation would need
to trigger a (user-configurable) hold time to avoid transient routing
loops.  (That's okay, though, deaggregation should never happen in
a well-designed network -- if you cannot guarantee that your border
routers are stable, you deserve the hold time.)

-- Juliusz

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