[c-nsp] Cisco 7609, LR Transceiver for Short Distance Connection

[Mikael Abrahamsson]

On Wed, 8 Sep 2010, Felix Nkansah wrote:

> I am told that using the LR for short distance connections would cause 
> problems, but we don't have time to order new transceivers.

10GBASE-LR is for 1m - 10km distances. We routinely put 1m patch cords on 
LRs and it's just fine.

10GBASE-ER/ZR is for 40 and 80km respectivel need attenuators, I'd 
recommend at least 5, preferrably 10dB minimum attenuation.

> Is there a way to set the transceiver interface on the 7600 to adjust to the
> short distance? such as changing the transmission power or something?

No such thing, go with the external optical attenuators recommended by a 
previous poster.

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se