[c-nsp] T3 circuit drops for 10 seconds and then returns

[Rodney Dunn]

I would try upgrading to get this fix:

CSCee70591
Externally found severe defect: Resolved (R)
PA-2T3+ does not adhere to the ANSI T1.231 standard

It applies to the one port also.

Rodney



On Fri, Jun 03, 2005 at 04:36:44PM -0400, Devon True wrote:
> All:
> 
> I am helping to troubleshoot a T3 circuit that keeps dropping. It loses 
> line protocol, goes down for 10 seconds, and then comes back up. I did a 
> "debug serial interface" and got the following when the T3 dropped.
> 
> The carrier has tested the circuit several times and the PA-T3 card has 
> been replaced. Anyone have any ideas?
> 
> ---- show log snippet ----
> 
> Jun  3 16:00:18.841 EDT: Serial2/0: HDLC myseq 347, mineseen 347*, 
> yourseen 347, line up
> Jun  3 16:00:28.841 EDT: Serial2/0: HDLC myseq 348, mineseen 348*, 
> yourseen 348, line up
> Jun  3 16:00:38.841 EDT: Serial2/0: HDLC myseq 349, mineseen 349*, 
> yourseen 349, line up
> Jun  3 16:00:48.841 EDT: Serial2/0: HDLC myseq 350, mineseen 349*, 
> yourseen 350, line up
> Jun  3 16:00:58.841 EDT: Serial2/0: HDLC myseq 351, mineseen 349*, 
> yourseen 351, line up
> Jun  3 16:01:08.841 EDT: Serial2/0: HDLC myseq 352, mineseen 349*, 
> yourseen 352, line up
> Jun  3 16:01:18.841 EDT: Serial2/0: HDLC myseq 353, mineseen 349*, 
> yourseen 353, line up
> Jun  3 16:01:28.841 EDT: Serial2/0: HDLC myseq 354, mineseen 349*, 
> yourseen 354, line up
> Jun  3 16:01:38.842 EDT: Serial2/0: HDLC myseq 355, mineseen 349*, 
> yourseen 355, line down
> Jun  3 16:01:39.842 EDT: %LINEPROTO-5-UPDOWN: Line protocol on Interface 
> Serial2/0, changed state to down
> Jun  3 16:01:48.842 EDT: Serial2/0: HDLC myseq 356, mineseen 356*, 
> yourseen 356, line up
> Jun  3 16:01:49.842 EDT: %LINEPROTO-5-UPDOWN: Line protocol on Interface 
> Serial2/0, changed state to up
> Jun  3 16:01:58.842 EDT: Serial2/0: HDLC myseq 357, mineseen 357*, 
> yourseen 357, line up
> Jun  3 16:02:08.842 EDT: Serial2/0: HDLC myseq 358, mineseen 358*, 
> yourseen 358, line up
> 
> ------------------------------
> 
> ---- show version ----
> 
> Cisco Internetwork Operating System Software
> IOS (tm) 7200 Software (C7200-IS-M), Version 12.0(3)T3,  RELEASE 
> SOFTWARE (fc1)
> Copyright (c) 1986-1999 by cisco Systems, Inc.
> Compiled Fri 16-Apr-99 11:19 by kpma
> Image text-base: 0x60008900, data-base: 0x60EB0000
> 
> ROM: System Bootstrap, Version 11.1(10) [dschwart 10], RELEASE SOFTWARE 
> (fc1)
> BOOTFLASH: 7200 Software (C7200-P-M), Version 12.0(28a), RELEASE 
> SOFTWARE (fc1)
> 
> bell-rtr1 uptime is 1 hour, 0 minutes
> System restarted by power-on at 15:02:13 EDT Fri Jun 3 2005
> System image file is "slot0:c7200-is-mz.120-3.T3"
> 
> cisco 7206 (NPE150) processor with 122880K/8192K bytes of memory.
> R4700 CPU at 150Mhz, Implementation 33, Rev 1.0, 512KB L2 Cache
> 6 slot midplane, Version 1.3
> 
> Last reset from power-on
> Bridging software.
> X.25 software, Version 3.0.0.
> 1 FastEthernet/IEEE 802.3 interface(s)
> 1 Serial network interface(s)
> 125K bytes of non-volatile configuration memory.
> 1024K bytes of packet SRAM memory.
> 
> 16384K bytes of Flash PCMCIA card at slot 0 (Sector size 128K).
> 20480K bytes of Flash PCMCIA card at slot 1 (Sector size 128K).
> 4096K bytes of Flash internal SIMM (Sector size 256K).
> Configuration register is 0x2102
> 
> ------------------------------
> 
> ---- show interface ----
> 
> Serial2/0 is up, line protocol is up
>    Hardware is M1T-T3 pa
>    Description:
>    Internet address is x.x.x.x/30
>    MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec,
>       reliablility 255/255, txload 3/255, rxload 10/255
>    Encapsulation HDLC, crc 16, loopback not set
>    Keepalive set (10 sec)
>    Last input 00:00:00, output 00:00:00, output hang never
>    Last clearing of "show interface" counters never
>    Queueing strategy: fifo
>    Output queue 0/40, 54415 drops; input queue 3/75, 5 drops
>    5 minute input rate 1844000 bits/sec, 283 packets/sec
>    5 minute output rate 586000 bits/sec, 328 packets/sec
>       994562 packets input, 846996446 bytes, 0 no buffer
>       Received 0 broadcasts, 0 runts, 0 giants, 5 throttles
>                0 parity
>       0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
>       1166824 packets output, 291277842 bytes, 0 underruns
>       0 output errors, 0 applique, 13 interface resets
>       0 output buffer failures, 0 output buffers swapped out
>       15 carrier transitions
>     rxLOS inactive, rxLOF inactive, rxAIS inactive
>     txAIS inactive, rxRAI inactive, txRAI inactive
> 
> ------------------------------
> 
> Devon
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/