It looks like Opti-3 have "Long" and "Short" option for LBO on the DS3 interface. I am going to make sure Verizon set it to short since the coax is only about 15' long.
I don't have any attenuators handy to try that out. I did however, changed the DSU mode to Kentrox and errors have gone away for the last hour. I didn't think that really mattered if you were doing full DS3. On Wed, Oct 1, 2008 at 10:31 AM, Robert Boyle <[EMAIL PROTECTED]> wrote: > At 10:18 AM 10/1/2008, you wrote: > >> I am stumped on a problem with our Telco here. >> > > Jay, > > Have you tried an attenuator on the DS3 RECV port on your PA-T3? Try a 10db > or a 13db. The signal from the Opti-3 is usually pretty high and overdrives > the RECV circuit. Although typically when that happens, it is a PA-MC-T3 and > you see tons of LCVs, but I have seen it with a PA-T3 too. > > R > > > > We have a frame-relay DS3 from Verizon. This is how it's connected from >> the >> CO. >> >> Verizon CO Frame router/switch <-> DS3 <-> Adtran Opti3 <-> OC3 fiber <-> >> Adtran Opti3 <-> DS3 <-> our router >> >> We started having problem two weeks ago and the circuit started bouncing. >> We originally had a 7500 router there. Verizon kept insisting the problem >> is CPE so we have tried second DS3 interface on the 7500, different card >> in >> the 7500, then finally swapping out the entire router with a 7200 and >> PA-T3. Verizon finally figured out there was indeed something wrong on >> their side and swapped out some cards on the Opti3. Now the circuit isn't >> going up and down but we are seeing trickling errors on the interface >> consistantly. They put a T-berd on our side of the dmark and monitored >> the >> circuit over the weekend. They are seeing errors coming from our router >> and >> FEBE from CO end. From our router, I am seeing errors coming from >> Verizon. >> >> At this point, I can't believe it's our DS3 card. We have changed the DS3 >> cable as well. Does anyone see any possible problem on my side of the >> config? Or any other ideas what could be causing this problem? >> >> interface Serial1/0 >> description Verizon DS3 frame-relay >> no ip address >> no ip redirects >> no ip unreachables >> no ip proxy-arp >> encapsulation frame-relay IETF >> no ip mroute-cache >> logging event subif-link-status >> logging event dlci-status-change >> framing c-bit >> cablelength 50 >> dsu bandwidth 44210 >> serial restart-delay 0 >> frame-relay lmi-type ansi >> >> #sh controllers ser 1/0 >> M1T-T3 pa: show controller: >> PAS unit 0, subunit 0, f/w version 3-92, rev ID 0x2800001, version 3 >> idb = 0x614754AC, ds = 0x61476FC4, ssb=0x614772F4 >> Clock mux=0x30, ucmd_ctrl=0x0, port_status=0x1 >> Serial config=0x8, line config=0x1B0202 >> maxdgram=4584, bufpool=128Kb, 256 particles >> >> rxLOS inactive, rxLOF inactive, rxAIS inactive >> txAIS inactive, rxRAI inactive, txRAI inactive >> line state: up >> cable type : T3 cable, received clockrate 44201430 >> >> base0 registers=0x3C800000, base1 registers=0x3C802000 >> rx_base0 registers=0x3C804000, rx_base1 registers=0x3C806000 >> mxt_ds=0x61922350, rx ring entries=124, tx ring entries=254 >> statring=0x3903900, statr shadow=0x61479124, stat_head=175 >> plus_pa: rx_statring=0x3903D40, rx_statr shadow=0x61479950, >> rx_stat_head=29 >> rxring=0x39036C0, rxr shadow=0x61478AF8, rx_head=109 >> txring=0x3904300, txr shadow=0x61479D7C, tx_head=185, tx_tail=191, >> tx_count=6 >> throttled=0, enabled=0 >> halted=0, last halt reason=0 >> Microcode fatal errors=0 >> rx_no_eop_err=0, rx_no_stp_err=0, rx_no_eop_stp_err=0 >> rx_no_buf=0, rx_soft_overrun_err=23, dump_err= 0, bogus=0, mxt_flags=0x2C >> tx_underrun_err=18, tx_soft_underrun_err=0, tx_limited=0(254) >> tx_fullring=538, tx_started=809952433 >> rx_int_count=870161881, tx_int_count=1611065176 >> Framing is c-bit, Clock Source is Line >> Bandwidth limit is 44210, DSU mode 0, Cable length is 50 >> rx FEBE since last clear counter 1980, since reset 179 >> Data in current interval (881 seconds elapsed): >> 1 Line Code Violations, 1 P-bit Coding Violation >> 1 C-bit Coding Violation >> 1 P-bit Err Secs, 0 P-bit Sev Err Secs >> 0 Sev Err Framing Secs, 0 Unavailable Secs >> 1 Line Errored Secs, 1 C-bit Errored Secs, 0 C-bit Sev Err Secs >> Total Data (last 24 hours) >> 2343 Line Code Violations, 637 P-bit Coding Violation, >> 635 C-bit Coding Violation, >> 260 P-bit Err Secs, 0 P-bit Sev Err Secs, >> 0 Sev Err Framing Secs, 0 Unavailable Secs, >> 418 Line Errored Secs, 260 C-bit Errored Secs, 0 C-bit Sev Err Secs >> >> No alarms detected. >> >> #sh int ser 1/0 >> Serial1/0 is up, line protocol is up >> Hardware is M1T-T3 pa >> Description: Verizon DS3 frame-relay ######### >> MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec, >> reliability 255/255, txload 57/255, rxload 13/255 >> Encapsulation FRAME-RELAY IETF, crc 16, loopback not set >> Keepalive set (10 sec) >> Restart-Delay is 0 secs >> LMI enq sent 41313, LMI stat recvd 41313, LMI upd recvd 0, DTE LMI up >> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0 >> LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE >> Broadcast queue 0/256, broadcasts sent/dropped 0/0, interface broadcasts >> 0 >> Last input 00:00:00, output 00:00:00, output hang never >> Last clearing of "show interface" counters 4d18h >> Input queue: 0/75/0/3084 (size/max/drops/flushes); Total output drops: >> 4570 >> Queueing strategy: fifo >> Output queue :0/40 (size/max) >> 5 minute input rate 2283000 bits/sec, 1030 packets/sec >> 5 minute output rate 10030000 bits/sec, 1403 packets/sec >> 209774076 packets input, 1379501582 bytes, 0 no buffer >> Received 356689 broadcasts, 0 runts, 0 giants, 0 throttles >> 0 parity >> 4829 input errors, 4748 CRC, 0 frame, 79 overrun, 0 ignored, 2 abort >> 259718552 packets output, 3599585926 bytes, 0 underruns >> 0 output errors, 0 applique, 4294967295 interface resets >> 0 output buffer failures, 0 output buffers swapped out >> 1 carrier transitions >> rxLOS inactive, rxLOF inactive, rxAIS inactive >> txAIS inactive, rxRAI inactive, txRAI inactive >> _______________________________________________ >> cisco-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ >> > > Tellurian Networks - Global Hosting Solutions Since 1995 > http://www.tellurian.com | 888-TELLURIAN | 973-300-9211 > "Well done is better than well said." - Benjamin Franklin > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
