On Fri, 10 Sep 2010, [email protected] wrote:

So, where does that leave the OP's LR links? Does it boil down to "get a meter"?

10GBASE-LR doesn't need attenuators, and spec requires at least 2 meters of patch cable.

10GBASE-ER needs a 5dB attenuator to be within spec.

Otoh:

OC192-LR is another beast, it's more closely related to ER/ZR in 10GBASE-space when it comes to specs.

OC192-SR and 10GBASE-LR has very similar optical specs.

--
Mikael Abrahamsson    email: [email protected]
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