[nsp] Gigabit Ethernet over SDH/Sonet

Edoardo.Martelli at cern.ch Edoardo.Martelli at cern.ch
Thu Mar 6 18:10:37 EST 2003

Have you tried  to disable speed autonegotiation of the Cisco GBeth's?


On Thu, Mar 06, 2003 at 05:06:40PM +0000, Eoin Kenny wrote:
> Hi all,
> I am trying to bring up a new point to point Gigabit Ethernet leased 
> line from a service provider for over a week now, without any luck!!
> The set up is as follows:
> GSR ----Optera Metro DWDM ring ----Ethernet over SDH ring-----Optera 
> Metro DWDM ring -----GSR
> We  have existing GE circuits working over the DWDM rings without any 
> problems. I also get local loop on my GSRs when the provider puts a 
> local software loop on the Optera equipment. The new element to our 
> usual setup is the EoSDH ring.
> I am using 1000Base SX Gbics in the GSRs and the providers equipment is 
> an Nortel STM64 ring with EoSDH cards, using GFP (generic framing protocol).
> Does anyone have any advice/experience of using GE Gbics with Etherent 
> over SDH equipment? Or any suggestions on what may be wrong?
> Thanks for your help.
> Eoin
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edoardo.martelli at cern.ch
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