t1 installed but not up - urgent

Posted on 2006-05-26
Last Modified: 2008-01-16
I hope some experts are out there over Memorial Day weekend.  Verizon installed a point to point t1 circuit today.  I have two cisco 2621 routers with WIC-1DSU-T1 cards.  Verizon says they can loop the CSU/DSU's on both ends.  However, the router at the host site has both the CD and AL lights on.  Verizon says they provide no clocking on the circuit.  I originally had one side (hub_router) set up as 'clock source internal', but changed it as reflected below to see if that would work.  

I haven't checked the remote site configuration yet, but the routers did communicate successfully when connected via a t1 crossover cable.  The remote router is set up the same as the host site, with the original exception of the clock source. I have not tried any sort of looback tests as I am not familiar enough yet with those commands.     I had a professional install all the cables, so hopefully that is not an issue.  

Any suggestions would be greatly appreciated as the remote is a new location and we want to do business there (retail) over this weekend.  Thank you in advance.

hub_router#sh service-module serial0/0
Module type is T1/fractional
    Hardware revision is 0.88, Software revision is 1.09,
    Image checksum is 0xE4616EAD, Protocol revision is 0.1
Transmitter is sending remote alarm.
Receiver has loss of signal, loss of frame,
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 00:05:51
    loss of signal        :    1, current duration 00:05:39
    loss of frame         :    1, current duration 00:05:39
    AIS alarm             :    0,
    Remote alarm          :    0,
    Module access errors  :    0,
Total Data (last 0 15 minute intervals):
    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
Data in current interval (353 seconds elapsed):
    255 Line Code Violations, 0 Path Code Violations
    61 Slip Secs, 353 Fr Loss Secs, 353 Line Err Secs, 0 Degraded Mins
    0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 353 Unavail Secs

hub_router#sh interface serial0/0
Serial0/0 is down, line protocol is down
  Hardware is PQUICC with Fractional T1 CSU/DSU
  Internet address is
  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, loopback not set
  Keepalive set (10 sec)
  LCP Closed
  Closed: IPCP, CDPCP
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 00:06:46
  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  0/0/256 (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, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
     DCD=down  DSR=up  DTR=up  RTS=up  CTS=down

hub_router#sh run
Building configuration...

Current configuration:
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
hostname hub_router
boot system flash flash:
enable secret 5 $1$5MXf$O/OFIYzqp0OhNAm6HD1001
memory-size iomem 15
ip subnet-zero

 interface FastEthernet0/0
 ip address
 no ip directed-broadcast
interface Serial0/0
 ip address
 no ip directed-broadcast
 encapsulation ppp
 service-module t1 remote-alarm-enable
interface FastEthernet0/1
 no ip address
 no ip directed-broadcast
interface Serial0/1
 no ip address
 no ip directed-broadcast
ip default-gateway
ip classless
ip route
no ip http server
line con 0
 transport input none
line aux 0
 no exec
 modem InOut
 transport input all
 speed 19200
 flowcontrol hardware
line vty 0 4
 password admin

Question by:wyatt3
    LVL 30

    Expert Comment

    perhaps verizon can assist by testing each point Dmark?

    Author Comment

    doesn't the fact that they say they can successfully loop the CSU/DSU mean that they are getting past the dmark (smartjack)?  With the Verizon tech on this end, I did watch the lights on the smartjack go to 2 green and 2 amber which he told me was the normal 'up' state for the card.  Verizon doesn't get a lot of points from me on how they handled the entire install.  It took them 3 days to get where we are now.
    LVL 30

    Assisted Solution

    just had to clarify that, it's OK to say, but really requires that double/triple check...

    If you can connect to your router as you mentioned..then router configuration is the only thing left on your plate.

    and it's Memorial Day weekend and you caught me with a beer in hand....
    LVL 79

    Accepted Solution

    What kind of cable do you have between the router's DSU module and the smartjack? It should be a good, tested, CAT5 patch cable. Had virtually the same issue the other day where the building maintenance ran the cable and didn't terminate one end correctly.

    >ip default-gateway
    Remove that line. Your own interface is not your gateway, and this should be handled by a different command:
      ip route

    >  DCD=down  
    Means it can't see the smartjack at all. Points to cable issue.
    Else, it is not a full T1, but a fractional T1 and you have not made the channel assignements.
    Default is set to use all 24 channels-
      interface serial 0/0
       service-module T1 timeslots 1-24 <== you won't see default settings with 'show config'  

    >they say they can successfully loop the CSU/DSU
    But your DSU can't see the smartjack, so how are they looping it?

    Author Comment

    I visited the remote site this morning.  One smartjack light is green if AMI and amber if b8zs.  The light is green.
    At the host site (hub_router) side, the corresponding light is amber (b8zs).  Also, the esf/sf light is not lit at all.
    Is this an indication that Verizon has the circuit set up incorrectly?  I will be calling them.
    LVL 30

    Expert Comment

    Perhaps confirm the configuration of your WIC-1DSU-T1 in the 2621...if it is in the same scope of connectivity and the simple thing of lights NOT matching...that call to Verizon would be prudent.

    Author Comment

    Turns out to have been a Verizon problem.  The circuit came up Sunday evening.  Something like 2 circuits with same id and/or bad wiring on their end.  It's hard enough to know what is happening outside the cloud, let alone inside it.  
    What is the proper way to end this question?  I appreciate both people responding (especially over the holiday weekend) as I had no where else to turn.  I would like to give some points.  I read the help sections on this site but am unsure if 'accepting' one of the answers above is best or if there is a more preferred procedure.
    LVL 30

    Expert Comment

    SPLIT POINTS (located above the comment box)

    LVL 30

    Expert Comment

    cool. thank yoU!

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