show int diag optic <interface> Some interfaces don't support it as mentioned, e.g. the fixed optic STM-64/OC-192 PICs in my experience. Otherwise I haven't come across a PIC that takes pluggable optics that this didn't work on, as long as the optic supports DOM I guess.
On Friday, 21 March 2014, Keegan Holley <no.s...@comcast.net> wrote: > > On Mar 14, 2014, at 5:06 PM, Will Orton <w...@loopfree.net <javascript:;>> > wrote: > > > I have a couple P(E)-4OC3-SON-SMIR that I purchased used and > successfully ran in a > > production network in the 2007-2009 timeframe. Then, about 5 years ago > the OC3 > > links were taken out of service and the PICs sat in their routers (an > M10 and an > > M20) for 4-5 more years doing nothing. > > > > The ports were set "disable" but the PIC was online, so I believe the > optical > > transmitters were still active. > > Could just be dust/debris even if someone put the boots back on, which > sometimes doesn’t happen. SMIR is very sensitive dirt. > > > > Now I'm trying to reussurect them for lab use and I cannot for the life > of me get > > them to link up back-to-back. Only one port out of eight will even go > "green" when > > looped to itself with a 1m patch cable. None will link port-to-port. > > > > LOL clears and I get PLL lock, but then either LOS or LOF, AIS, BERR, > etc on > > both sides. > > > > I've tried: > > -multiple patch cables (yes they're SMF) > > -cleaning the cables' SC connector with tissue/alcohol > > This is a bad idea. You could replace tiny dust particles with giant > tissue fibers twice as big but still too small to see. A proper fiber > cleaner is about $100. If you don’t have access to one you should just > replace cables. > > > -blowing canned air into the ports on the PIC > > Bad idea as well. You’re actually more likely to blow things into the > connectors than away from them. > > > -5 & 10db optical attenuators in case it was rx overload even though that > > shouldn't matter > > I’ve never had to attenuate in a lab even with SMIR optics and 1-2m > cables, but YMMV. To quote my old SE, “Juniper likes it hot!”. > > > -verifying tx/rx strands and swapping just in case > > -every combination of clocking,enable/disable scrambling, crc16/32, etc > > -JUNOS 10, 11, and 12 in both M10 and M20 with FPC-E > are you sure the new code is compatible with those cards? > > Are the optics swappable? I can’t remember for that card. I’d try new > ones or at least try known good ones in all the non-working ports. > > > > > > > Unfortunately I don't have a light meter. But I'm starting to think the > > transmitters might just be toast and not pushing enough light to present > a > > usable signal to the other end even with only a 1m patch. > > You do actually have a moderately accurate light meter. There’s a command > that will show you light levels from the perspective of the PIC IIRC. I > can’t guarantee that it is supported on hardware this old though so YMMV. > I believe it’s under the show interfaces physical hierarchy. It should > tell you what it’s transmitting, what it’s receiving and the minimum light > level to establish a link. > > Over the years, I’ve also taken to simply taking the known good port and > cable and plugging it into all the stuff that didn’t work. I would > sometimes end up with cables pulled through racks and other dodgy places > temporarily, but I always ended up invalidating some of my deductions. > > > > > > http://www.juniper.net/techpubs/software/junos/junos85/swconfig85-network-interfaces/id-12763130.html > > > > says: > > > > "To extend the life of the laser, when a SONET/SDH PIC is not being > actively used > > with any valid links, take the PIC offline until you are ready to > establish a link > > to another device. To do this, issue the request chassis pic offline > fpc-slot > > slot-number pic-slot slot-number operational mode command" > > > > Is this a real thing? Is 10-15 years in the expected usable lifetime of a > > circa-2001 1310nm laser? > > Yes. no. maybe. probably. definitely. sometimes… I’ve seen gear used > well beyond it’s expected lifetime and I’ve seen things come out of the > depot completely unusable. Everything breaks. Stuff is either broken or > not broken yet. That’s why hardware lifecycle’s were invented. If there’s > no current in the components they will last longer at least according to > the laws of physics. That doesn’t mean that leaving one on for 5 years > will definitely fry it. > > > > > > > -Will Orton > > _______________________________________________ > > juniper-nsp mailing list juniper-nsp@puck.nether.net <javascript:;> > > https://puck.nether.net/mailman/listinfo/juniper-nsp > > > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net <javascript:;> > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
