On Wednesday 25 March 2009 15:03:34 Bill Wichers wrote: > Does anyone have any ideas? I've already checked light levels, CRC (set > the same on both ends - CRC16), clocking is line on one end, internal on > the other, all the other settings are identical on both ends. What is > happening right now is that the line shows "up" on both ends, but line > protocol is going up/down on about 20 second cyles:
One quick question: is this your own dark fiber, or through a SONET ADM, or through a service provider? Interestingly enough, the recommendation for dark fiber is internal clocking on both ends. Also note that the quad OC3 line cards in the 12000 have some limitations as to clocking individual ports. Also, what IOS versions are you running? -- Lamar Owen Chief Information Officer Pisgah Astronomical Research Institute 1 PARI Drive Rosman, NC 28772 http://www.pari.edu _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
