[c-nsp] OSPF over virtual-access interfaces

[Francois Corthésy]

What is the IP address on customer router Fa0/0 ?
Could it be a broadcast problem on the ADSL modem, either blocking it 
explicitly, or there is some routing going on ?


Francois


Jeremiah Millay wrote:
> I'm trying to set up a customer router to run ospf over their ADSL line 
> to us. Here is a crude diagram:
>
> Customer Router (Fa0/0) -----> ADSL Modem (PPPoE Client) -----> Provider 
> Cloud -----> LNS (One of our core routers)
>
> I enable all of the commands on the customer router for a standard ospf 
> setup. Something like:
>
> router ospf 1
>  log-adjacency-changes
>  passive-interface default
>  no passive-interface FastEthernet0/0
>  network 209.X.X.0 0.0.0.7 area 0
>
>
> On our side (the LNS):
>
> router ospf 1
>  log-adjacency-changes
>  passive-interface default
>  no passive-interface Virtual-Template1
>  network 209.X.X.0 0.0.0.7 area 0
>
> interface Virtual-Template1
>  mtu 1492
>  ip unnumbered Loopback1
>  no logging event link-status
>  peer default ip address pool DSL-POOL
>  ppp authentication chap
> !
>
> int loopback 2
>  ip address 209.X.X.1 255.255.255.248
>
>
>
> In my RADIUS config I'm returning some specific Cisco AVPairs:
> Framed-Address = 209.X.X.2
> Framed-Netmask= 255.255.255.248
> lcp:interface-config#1=ip unnumbered loopback 2
> lcp:interface-config#2=ip ospf authentication-key somekey
>
>
> I'm able to get the connection working just fine. I can ping from both 
> ends with no problems. But I'm not seeing any hellos from the either 
> router crossing the link (debug ip ospf hello / debug ip ospf adj). Is 
> there some trick to creating an OSPF adjacency over virtual-access 
> interfaces? Havn't found much info on the Cisco site.
>
> Any help would be appreciated.
> Jeremiah
>
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