[j-nsp] G/E, 1000 BASE-LX on both sides shows up but not pingable

Matt Yaklin myaklin at g4.net
Wed Mar 8 08:48:49 EST 2006

On Wed, 8 Mar 2006, Mohammed Nematullah Khan wrote:

> Thanks for all the responses. I forgot to mention that this link is going
> via Dense wavelength division multiplexing (DWDM) transmission network. DWDM
> transmission equipment is in the same building. I dont think so distance
> should be a problem. One doubt.....whether DWDM supports Ethernet? I read

I used to make DWDMs for Corning. I do not know of any limitation of
a DWDM carrying gige as long as the frequency matches the port you
are going into.

Can someone correct me if I am wrong? I always thought of
DWDMs as a very cleverly designed passive device that will simply
pass the light if it "fits" through the glass filters.



> somewhere that it will support ATM and SONET/SDH. There is no mention of
> Ethernet.
> *Sunil *- There is nothing configured except duplex on both sides. If DWDM
> supports Ethernet is there  any thing specific to configure under chassis or
> GE interface.
> Thanks,
> MNK.
> On 3/7/06, Jee Kay <jeekay at gmail.com> wrote:
>> On 07/03/06, Mohammed Nematullah Khan <nematkhan at gmail.com> wrote:
>>> I am observing strange problem. G/E, 1000 BASE-LX is the hardware on 2
>> M320
>>> routers which are 165 kms apart. Both sides shows up/up. But I cant ping
>>> each other.
>> Not to worry you, but the distance spec for LX modules is max 10km...
>> Even for LH you're looking at max 70km.
>> Ras
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