06-10-2013 03:07 PM
we just had a new circuit install at a remote data center and from what I can tell there is a big difference between what the provider is transmitting vs what I'm receiving
Provider Edge
Laser output power : -2.13 dBm
Receiver signal average optical power : -7.52 dBm
Customer Edge
Transceiver Tx power = -3.5 dBm
Transceiver Rx optical power = -7.3 dBm
In comparison to another active circuit of mine what the provider is transmitting and I'm receiving is much closer in value.
Is this anything to worry about? The circuits are up but wanted to make sure.
06-10-2013 05:49 PM
Can you provide some details regarding the optical transceiver that you have installed in your equipment? What type of fiber are you connecting to (singlemode or multimode)? Are these the same for the other circuit you are comparing to?
Thanx!
06-10-2013 08:13 PM
singlemode throughout and on my side i'm using the following
XFP-10GLR-OC192SR
provider is using Juniper router
Juniper brand 10G-LR
06-11-2013 05:51 AM
The two receive values, -7.52 & -7.3 dbm fall comfortably within the 10G XFP's receiver's operating range; so the link should operate properly.
Is your equipment and the providers equipment installed in the same facility? What is the estimated length of the link?
06-21-2013 05:37 PM
If the LR is long range and the SR is short range, shouldn't they match on both sides?
Sent from Cisco Technical Support iPad App
06-21-2013 08:16 PM
I assume the link is configured for 10G Ethernet (vs OC192 POS), correct?
The Cisco XFP-10GLR-OC192SR optical transceiver is compliant to the IEEE 10Gbps Ethernet Long-Reach standard and the OC-192 Short-Reach standard. The Junipter 10G-LR support the 10Gbps Ethernet Long-Reach standard. If you are running the link at 10Gpbs Ethernet, then they are matched on both sides.
I hope this helps!
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