On Fri, 29 Mar 2002, Burke McCrory wrote:

> I am trying to put a PIX into a network that uses OSPF between its
> routers.  So far I haven't been able to find a way to allow the OSPF
> updates to pass through the PIX.  Does anyone have any ideas or
> suggestions?  Thanks.

the problem you are running into is the OSPF uses multicast by default and
the pix won't (and shouldn't) route multicast.

one solution i have used to this solve problem is to force OSPF to use
NBMA mode (effectively point-to-point routing updates). each OSPF node is
told a specific neighbor to send updates to. i've used both GateD and IOS
in these situations (and both with MD5 auth).

i haven't tried this through the pix and i'm not sure the pix can be told
to allow ip protocol 89 between specific IP addresses on different
interfaces.


- brett

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