Fw: [nsp] OSPF over RBE - no full adjacency

[Adam Debus]

Reposting for the list...I should check where I'm sending things before I
hit send :)

Thanks,

Adam Debus
Network Engineer, ReachONE Internet
adam at reachone.com
----- Original Message ----- 
From: "Adam Debus" <adam-lists at reachone.com>
To: "Vincent De Keyzer" <vincent at dekeyzer.net>
Sent: Wednesday, January 21, 2004 10:40 AM
Subject: Re: [nsp] OSPF over RBE - no full adjacency


> I had this problem recently running OSPF over a DSL line...
>
> Odds are your problem is that the MTU doesn't match on both sides. In my
> case the problem was that the DSL modem I was using was dropping the MTU
> from 1500 to 1490.
>
> Your choices are either to statically lower the MTU on the interfaces, or
> add the 'ip ospf mtu-ignore' statement to your interfaces.
>
> Thanks,
>
> Adam Debus
> Network Engineer, ReachONE Internet
> adam at reachone.com
> ----- Original Message ----- 
> From: "Vincent De Keyzer" <vincent at dekeyzer.net>
> To: <cisco-nsp at puck.nether.net>
> Sent: Wednesday, January 21, 2004 8:56 AM
> Subject: [nsp] OSPF over RBE - no full adjacency
>
>
> Hello people,
>
> how do I make the following two boxes establish an OSPF adjacency?
>
> It seems that simple network statements are not enough - neighbors remain
in
> Exstart/Exchange phase.
>
> Vincent
>
> _________________________________________________________________
>
> Router A:
>
> interface ATM2/0.12801 point-to-point
>  description To Router B
>  ip address x.y.240.81 255.255.255.252
>  ip verify unicast reverse-path
>  atm route-bridged ip
>  pvc RouterB 12/801
>   vbr-nrt 2000 2000
>   encapsulation aal5snap
>  !
>  ntp broadcast
>
> alfonso#sh ip o ne
>
> Neighbor ID     Pri   State           Dead Time   Address
Interface
> RouterB           1   EXCHANGE/  -    00:00:37    x.y.240.82
ATM2/0.12801
>
>
>
> Router B:
>
> interface Ethernet0/0
>  description To Router A
>  ip address x.y.240.82 255.255.255.252
>  ip verify unicast reverse-path
>  load-interval 30
>  full-duplex
>  ntp broadcast client
>
>
> RouterB#sh ip o ne
>
> Neighbor ID     Pri   State           Dead Time   Address
Interface
> RouterA           1   EXSTART/BDR     00:00:39    x.y.240.81   Ethernet0/0
> blanche15#
>
>
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