From: Ron.Fuller@xxxxxx
Date: Fri May 18 2001 - 12:49:08 GMT-3
Really? I have installed many T-1s and never had the telco provide
clocking any time other than when the circuit was fractionalized. As the
risk of sounding ignorant, what is a 1/0 or 3/0 DACS?
Gotta love this job! You learn something new every day.
Thanks,
Ron Fuller, CCIE #5851, CCDP, CCNP-ATM, CSS Level 1, CCNP-Voice, MCNE
3X Corporation
rfuller@3x.com
Jason Gardiner <gardiner@sprint.net>
Sent by: gardiner@sprint.net
05/18/2001 11:48 AM
To: Ron.Fuller@3x.com
cc: Jeongwoo Park <jpark@wams.com>, ccielab@groupstudy.com
Subject: Re: point to point T1 troubleshooting.
If
> this is a full T-1 then one of the CSU/DSUs will provide clocking.
This is not necessarily true. If telco breaks out a circuit through a
1/0 or 3/0 DACS, then neither of the CSUs should provide clocking, as
the DACS is tied into a Stratum-1 clock. This is the most common
setting.
Ron.Fuller@3x.com wrote:
>
> Was the circuit working previously and this is a new problem, or is this
a
> new install? You might want to check the clockings of the CSU/DSUs. If
> this is a full T-1 then one of the CSU/DSUs will provide clocking. If
it
> is fractionalized, then both the of the CSU/DSUs should get their clock
> from the telco. Can you loop the remote CSU/DSU? Do you have a T-1
> loopback plug? Try connecting it to the cable running from the CSU/DSU
to
> the smartjack the telco put it and see if the line comes up. You can
then
> run extended pings using all 0's and all 1's as the pattern to see if
> there are any cabling problems. You can do the same extended ping if
the
> remote loopback works on the CSU/DSUs to test the telco circuit.
>
> Good luck!
>
> Ron Fuller, CCIE #5851, CCDP, CCNP-ATM, CSS Level 1, CCNP-Voice, MCNE
> 3X Corporation
> rfuller@3x.com
>
> "Jeongwoo Park" <jpark@wams.com>
> Sent by: nobody@groupstudy.com
> 05/18/2001 10:58 AM
> Please respond to "Jeongwoo Park"
>
>
> To: <ccielab@groupstudy.com>
> cc:
> Subject: point to point T1 troubleshooting.
>
> Hi all
> Have anyone troubleshootted T1?
> it is ppp encapsulation, leased line.
> LEC(local exchange carrier) said circuit is fine, which I doubt.
> Router config is fine, I believe.
> here is output of "sh int s2/0"
>
> #sh int s2/0
> Serial2/0 is up, line protocol is down
> Hardware is M4T
> Description: Leased Line to branch
> Internet address is 10.10.14.86/30
> MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation PPP, crc 16, loopback not set
> Keepalive set (10 sec)
> LCP Listen
> Closed: IPCP, CDPCP
> Last input never, output 00:00:03, output hang never
> Last clearing of "show interface" counters 18:08:32
> 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 0/1/256 (active/max active/max
> total)
> Reserved Conversations 0/0 (allocated/max
> allocated)
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 0 packets input, 0 bytes, 0 no buffer
> Received 0 broadcasts, 0 runts, 2368 giants, 0
> throttles
> 8940 input errors, 1913 CRC, 0 frame, 6028
> overrun, 0 ignored, 999 abort
> 13556 packets output, 189784 bytes, 0 underruns
> 0 output errors, 0 collisions, 3438 interface
> resets
> 0 output buffer failures, 0 output buffers
> swapped out
> 3672 carrier transitions DCD=up DSR=up
> DTR=up RTS=up CTS=up
> **Please read:http://www.groupstudy.com/list/posting.html
> **Please read:http://www.groupstudy.com/list/posting.html
-- Thanks,Jason Gardiner Engineering Services Sprint E|Solutions
"The only thing to prevent what's past is to put a stop to it before it happens." - Sir Boyle Roche **Please read:http://www.groupstudy.com/list/posting.html
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