(PM) OSPF and assymetric routing

Scott Rosen (srosen@frazmtn.com)
Mon, 23 Feb 1998 21:34:43 -0700

We are trying to implement OSPF on our network and have run into a
bit of a snag. In addition to our regular dialup pool, we are also
running a cablemodem system that uses assymetric routing.

The cablemodem customers dialup to our portmaster, and we assign
them an IP address from a special pool. These addresses have been
statically routed out to the cable headend, and then on to the cable
system. So, from a customer point of view, all of their data goes
*out* their analog modem, and it comes *in* via their cablemodem.

This has been working fine with static routes. However, as soon as
we turned on OSPF, the portmaster started announcing the route to
the dialup customer, so the data comes back in via their analog modem
(instead of being bounced out to the cable office).

Is there a way to tell the portmaster to *NOT* announce certain
addresses using OSPF? Or to have it announce a lower priority? Any
suggestions?

TIA,

Scott Rosen
Frazier Mountain Internet Service
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