From: barrerj1@hotmail.com
Date: Thu Jul 08 2004 - 16:42:58 GMT-3
Yes! Demarcation was extended at the Central site, less than 150ft
The service provider SBC is not providing the clock rate so I configured
the central site WIC with clock source internal and the remote site
clock source line.
I have the same setup with another remote site and that one does not
report any problems.
Which leads me to believe is a SBC deal, SBC claim is not.
Their non-intrusive test came back Ok (Good Numbers) according to SBC.
The T1 stayed up for more than 3 hrs then it went down again, that was
yesterday.
Today T1 went down in the morning and again around 12:00 CST
Last time I did a clear interface s0/0 and came back up.
The below configuration shows the T1 in the Up Up state. (While writing
this email)
When the central site T1 goes down, the line and protocol are in the
Down, Down State.
The remote site is all the time in the UP UP state.
Central Site
1930#sh int s0/1
Serial0/1 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
Internet address is 192.168.30.9/30
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 4/255, rxload 5/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:03, output 00:00:00, output hang never
Last clearing of "show interface" counters 05:36:24
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/19/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1152 kilobits/sec
5 minute input rate 35000 bits/sec, 36 packets/sec
5 minute output rate 26000 bits/sec, 42 packets/sec
545843 packets input, 50518934 bytes, 0 no buffer
Received 1647 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
550245 packets output, 53555929 bytes, 0 underruns
0 output errors, 0 collisions, 204 interface resets
0 output buffer failures, 0 output buffers swapped out
5 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
1930#sh ser
1930#sh service-module s
1930#sh service-module serial 0/1
Module type is T1/fractional
Hardware revision is 0.48, Software revision is 20030124,
Image checksum is 0x3F5707, Protocol revision is 0.1
Receiver has no alarms.
Framing is ESF, Line Code is B8ZS, Current clock source is internal,
Fraction has 24 timeslots (64 Kbits/sec each), Net bandwidth is 1536
Kbits/sec.
Last module self-test (done 01:44:50): Passed
Last clearing of alarm counters 01:38:02
loss of signal : 0,
loss of frame : 1, last occurred 01:37:53
AIS alarm : 0,
Remote alarm : 0,
Module access errors : 0,
Total Data (last 6 15 minute intervals):
0 Line Code Violations, 0 Path Code Violations
1 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail
Secs
Data in current interval (476 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail
Secs
Remote Site.
WHS#sh int s0/0
Serial0/0 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
Description: Link to 1930 Site
Internet address is 192.168.30.10/30
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, 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 01:37:43
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/5/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 1000 bits/sec, 21 packets/sec
5 minute output rate 10000 bits/sec, 21 packets/sec
162593 packets input, 22168972 bytes, 0 no buffer
Received 684 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
159450 packets output, 22346221 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
WHS#sh ser
WHS#sh service-module s
WHS#sh service-module serial 0/0
Module type is T1/fractional
Hardware revision is 0.128, Software revision is v1.10,
Image checksum is 0x461796D6, Protocol revision is 0.1
Receiver has no alarms.
Framing is ESF, Line Code is B8ZS, Current clock source is line,
Fraction has 24 timeslots (64 Kbits/sec each), Net bandwidth is 1536
Kbits/sec.
Last module self-test (done at startup): Passed
Last clearing of alarm counters 01:37:55
loss of signal : 0,
loss of frame : 0,
AIS alarm : 0,
Remote alarm : 0,
Module access errors : 0,
Total Data (last 96 15 minute intervals):
0 Line Code Violations, 1652 Path Code Violations
1 Slip Secs, 478 Fr Loss Secs, 0 Line Err Secs, 5 Degraded Mins
6 Errored Secs, 6 Bursty Err Secs, 62 Severely Err Secs, 416 Unavail
Secs
Data in current interval (431 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail
Secs
RollingWHS#
RollingWHS#
Thank you All!
JB
------------------------------------------------------------------------
----Is the flapping periodic at a certain interval? I have seen mismatched keepalive timers cause a t1 line to flap. What do your counters show?
http://www.cisco.com/en/US/tech/tk713/tk628/technologies_tech_note09186a 00801509d7.shtml
There are additional links at the bottom of the page.
Marvin Greenlee Network Learning, Inc. marvin@ccbootcamp.com
-----Original Message----- From: Jay Hennigan [mailto:jay@west.net] Sent: Thursday, July 08, 2004 1:40 PM To: barrerj1@hotmail.com Cc: ccielab@groupstudy.com Subject: Re: HELP with WIC-T1-DSU card
On Thu, 8 Jul 2004 barrerj1@hotmail.com wrote:
> Hi everyone, > > > > I have the following problem between 2 sites using WIC-t1-DSU cards > > The remote site is currently using version 1 of the card and the remote > site 2 is using version 2 of the same cards
Shouldn't be an issue. > > My problem is that the line is continually flapping at the central site; > the service provider tells me that their equipment is Ok.
I'd check physical layer. It is possible for T-1s to work amazingly well with one wire of one of the pairs open. Well enough to just give sporadic errors. Are the demarcatrion points extrended?
> I know theirs is a procedure to test the WIC cards, I can not find it. > > As you know, I have to prove them that it's not the equipment.
Well, you can put them in loopback, etc.
[snip] > > Central Site > 1930r# > sh run int s0/1 > Building configuration... > > Current configuration : 260 bytes > ! > interface Serial0/1 > description Link to 3100 Tollview > ip address 192.168.30.9 255.255.255.252 > service-module t1 cablelength short 220ft
I'd eliminate the above, never needed it. Let the WIC set LBO automatically.
> service-module t1 clock source internal
It is entirely possible that the carrier is clocking the circuit in which case you don't want the above. Does it work at all without the clock source internal command? What is telco seeing? Slips?
> > service-module t1 timeslots 1-24 > > service-module t1 remote-alarm-enable
-- Jay Hennigan - CCIE #7880 - Network Administration - jay@west.net WestNet: Connecting you to the planet. 805 884-6323 WB6RDV NetLojix Communications, Inc. - http://www.netlojix.com/
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