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

Mohammed Nematullah Khan nematkhan at gmail.com
Wed Mar 8 02:46:24 EST 2006

It seems there is transmission problem. They connected analyzer and tested
layer-2 which is OK. But layer-3 test failed. I will update with their
findings. Once again thanks for all the responses.


On 3/8/06, Richard A Steenbergen <ras at e-gerbil.net> wrote:
> On Wed, Mar 08, 2006 at 08:08:02AM +0400, 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.
> > transmission equipment is in the same building. I dont think so distance
> > should be a problem. One doubt.....whether DWDM supports Ethernet? I
> read
> > somewhere that it will support ATM and SONET/SDH. There is no mention of
> > Ethernet.
> It has nothing to do with DWDM itself, but the specific DWDM mux of your
> carrier may not support Ethernet. In fact if it is non-metro, it probably
> doesn't. 1G is generally considered too small to be a native wavelength
> for anything non-metro, most longhaul systems are 2.5G or 10G waves. A lot
> of newer systems support 10GE as well as OC192 over 10G waves, but a lot
> of existing deployed systems don't.
> Bottom line, not a Juniper problem. Consult your provider to determine the
> type of gear you are on, and if their wavelength can support GigE.
> --
> Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
> GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)

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