Wireless STM-1 link

Thu Sep 10 16:06:01 UTC 2009

On Thu, Sep 10, 2009 at 2:55 AM, Rens <rens at autempspourmoi.be> wrote:

> All the interfaces are forced to 1Gbps and full duplex.
>
> Maybe I should give some extra info.
> All the traffic seems to pass ok via that link but I have seen that often
> OSPF adjacencies go down/up , I suspect that the HELLO packets are being
> dropped that pass via that link.
>
> That's why I started to look a little deeper and do some ping tests.
>
> -----Original Message-----
> From: Adam Goodman [mailto:adam at wispring.com]
> Sent: jeudi 10 septembre 2009 11:45
> To: Rens
> Cc: <nanog at nanog.org>
> Subject: Re: Wireless STM-1 link
>
> Sounds like this might be an Ethernet negotiaton problem
>
> --------
> Sent from my phone
>

Seems everyone has focused on GE as the problem.  You can quickly rule that
out by looking at interface error counters and doing PING tests from the
wireless router/device to something on the local network on both sides.  If
OSPF is flapping because of missed HELLO packets then I'm thinking you have
a problem with either saturation on the link or actual wireless issues.
 When PING does work what do the times look like? I'd look at static routing
for a bit (if practical) or changing your OSPF HELLO intervals to see if
that does anything.  Here's a good link on troubleshooting
OSPF adjacency changes:
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094050.shtml