[j-nsp] group re0 routing-options

[Felix Schueren]

Patrik Olsson wrote:
> Silly me. Yes of course, if the route points to fxp0, the route will be
> used for forwarding, but no packets can transit from the PFE there. But
> Felix, are you sure packets go in the other direction?
yup. We've had it happen.

>How does the connection between PFE and RE handle this?
> 
badly. :p

It uses the same path as the control traffic, i.e. OSPF, BGP, IS-IS
packets, FPC health monitoring etc.

Incidentally, I highly recommend placing a spoof-protect filter on your
fxp0 interface (something like: from source-address fxp0-network;
dest-addr fxp0-network; then accept; rest then reject), because all
packets entering fxp0 (e.g., broadcasts) with a non-fxp0-network
destination will be sent to the PFE and be forwarded there.

Kind regards,

Felix

-- 
Felix Schüren
Head of NOC

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