[117332] in North American Network Operators' Group
Re: Wireless STM-1 link
daemon@ATHENA.MIT.EDU (Josh Cheney)
Thu Sep 10 06:48:28 2009
Date: Thu, 10 Sep 2009 06:47:25 -0400
From: Josh Cheney <josh.cheney@gmail.com>
To: Rens <rens@autempspourmoi.be>
In-Reply-To: <AA6E7B79584644F3A75457E294E47C8C@EU.corp.clearwire.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
I'm assuming that you have checked all of the wireless parameters (noise
floor, signal strength, jitter, etc)? I've seen behavior like this on
links where the noise floor has risen to the point where the true signal
cannot be distinguished from background noise.
Josh
Rens 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@wispring.com]
> Sent: jeudi 10 septembre 2009 11:45
> To: Rens
> Cc: <nanog@nanog.org>
> Subject: Re: Wireless STM-1 link
>
> Sounds like this might be an Ethernet negotiaton problem
>
> --------
> Sent from my phone
>
> On Sep 10, 2009, at 12:05 PM, "Rens" <rens@autempspourmoi.be> wrote:
>
>> Hi all,
>>
>>
>>
>> I'm encountering a problem with a wireless STM-1 link which has a
>> switch
>> connected at each end.
>>
>> The wireless link has Gigabit Ethernet interfaces and so have my
>> switches.
>>
>>
>>
>> When I ping between the 2 switches via that wireless link I'm
>> getting a lot
>> of pings that are lost.
>>
>> The wireless link is not saturated but I'm thinking it could have to
>> do
>> something with the gigabit interfaces and only having 155Mbps on the
>> link
>> itself?
>>
>>
>>
>> All ideas welcome.
>>
>>
>>
>> Regards,
>>
>>
>>
>> Rens
>>
>
>
--
Josh Cheney
josh.cheney@gmail.com
http://www.joshcheney.com
