Hmmm.. Is there actually a way on Juniper to adjust the output power though?
...Skeeve *Skeeve Stevens - *eintellego Networks Pty Ltd [email protected] ; www.eintellegonetworks.com Phone: 1300 239 038; Cell +61 (0)414 753 383 ; skype://skeeve facebook.com/eintellegonetworks ; <http://twitter.com/networkceoau> linkedin.com/in/skeeve twitter.com/theispguy ; blog: www.theispguy.com The Experts Who The Experts Call Juniper - Cisco - Cloud - Consulting - IPv4 Brokering On Fri, Jan 24, 2014 at 12:32 PM, Tim Rayner <[email protected]>wrote: > Yes, by all means clean the fibre patches at both ends... both the patch > leads, and the fibre at the back of the FOBOT.. And clean any intermediate > patching.... And an OTDR test can identify anything along the path that is > causing higher than expected loss.... > > However, it may be that the easiest solution is to step up to 10GBase-ZR > optics - which tend to have a power budget of around 23 dB, rather than the > 10GBase-ER which typically have a power budget of ~ 15 dB. > > Tim. > > Tim Rayner > Optical Engineer, AARNet Pty Ltd > street address: Building 9, Banks Street, YARRALUMLA ACT 2600 > postal address: GPO Box 1559, CANBERRA ACT 2601 > t. +61 2 6222 3575 f. +61 2 6222 3535 e. [email protected] > w. www.aarnet.edu.au > Network Faults (24x7): 1300 APL NOC (1300 275 662) or [email protected] > > important > This email and any files transmitted with it are confidential, and the > rights of confidentiality in such information are not waived or lost by its > mistaken delivery to you. Any dissemination, copying, use or disclosure of > the email and/or such files without the permission of AARNet, or the > sender, is strictly prohibited. If you have received this email in error, > please contact the sender immediately and delete all copies of this > transmission. > > ________________________________________ > From: juniper-nsp [[email protected]] on behalf of > Jared Mauch [[email protected]] > Sent: Friday, 24 January 2014 12:36 AM > To: Ali Sumsam > Cc: <[email protected]> > Subject: Re: [j-nsp] Power issues on 10Gig link > > On Jan 23, 2014, at 8:14 AM, Ali Sumsam <[email protected]> > wrote: > > > Hi All, > > > > I am using a SFP-10GBase-ER for my Cisco3750X for a 10gig link going to a > > Juniper MX5-T router (10GE XFP) > > > > > > I am receiving following logs on my Cisco3750X. > > > > %SFF8472-5-THRESHOLD_VIOLATION: Te1/1/2: Rx power low alarm; Operating > > value: -21.3 dBm, Threshold value: -20.0 dBm. > > > > No logs on Juniper. > > > > Does this mean I have to increase the power on the interface? > > Or is there anything else I need to look at? > > > > Following are the readings from my Juniper router. > > > > Laser rx power high alarm threshold : 1.2589 mW / 1.00 dBm > > Laser rx power low alarm threshold : 0.0158 mW / -18.01 dBm > > Laser rx power high warning threshold : 1.0000 mW / 0.00 dBm > > Laser rx power low warning threshold : 0.0199 mW / -17.01 dBm > > > > You need to take a look at your span length and OTDR numbers. > > Was there recently a bend in the cable that caused this attenuation? > > Do the light levels improve when cleaned? > > If you replace the optic does the situation improve? > > Is the launch power the same in both directions, but just low on the RX > side facing the Cisco? > > Finding the answers to these questions should resolve your alarms. > > - Jared > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
