[cisco-bba] ospf over pppoe link

[Oliver Boehmer (oboehmer)]

Mark Jones <> wrote on Wednesday, March 21, 2007 4:42 PM:

> We are trying to run ospf over a pppoe link. everything works to as
> you would expect with ospf except that on the lns side the
> virtual-access interface is always in passive mode so it never sends
> hellos packets or listens for them. The client side is sending them
> out the proper interface. has anyone done this successfully?    
> 
> I can supply config snap shots if that is helpful.
> 

OSPF config is needed, but I'd guess you did something like

router ospf 1
 passive-interface default
 no passive-interface Virtual-template1

This won't work as the "no passive-interface" is taken literally, the
Virtual-Access<n>  (VAI) interfaces will be matched by the
"passive-interface default".

Depending on your IOS version, you could use the "ip ospf area <area>"
interface command to enable OSPF (see the "Area Command in Interface
Mode for OSPFv2" feature documentation), and apply this command via
Radius/lcp:interface-config in a per-user fashion so only some users
will be able to speak OSPF with you. If this doesn't work, you could use
a different loopback interface for these users (either a different
vtemplate or apply an "ip unnumbered Loopback1" using
Radius/lcp:interface-config) and use "network <loopback1-address>
0.0.0.0 area <area>", so all VAI's referencing this loopback will be put
into OSPF.
Make sure to run OSPF MD5 authentication here..

But, this is just a wild guess ;-)

	oli