3Com 6040 to Adtran 908e Multilink PPP over three T1 Circuit Issues

I'm having some difficulty bonding three T1s on an Adtran 908e connecting back to our 3Com 6040.

The 1st Two T1's bond fine and are passing traffic, i cannot get the 3rd to bond.

On the 3com 6040 (ISP Side):
------------------------------------------------
controller T3 1/0/0
 t1 8 channel-set 0 timeslot-list 1-24
 t1 9 channel-set 0 timeslot-list 1-24
 t1 10 channel-set 0 timeslot-list 1-24
 frame-format m23
 t1 8 set clock master
 t1 9 set clock master
 t1 10 set clock master

interface Serial1/0/0/8:0
 link-protocol ppp
 description MPP Link 1 of 3 to CustomerA
 ppp mp Mp-group 5
#
interface Serial1/0/0/9:0
 link-protocol ppp
 description MPP Link 2 of 3 to CustomerA
 ppp mp Mp-group 5
#                                        
interface Serial1/0/0/10:0
 link-protocol ppp
 description MPP Link 3 of 3 to CustomerA
 ppp mp Mp-group 5
#

interface Mp-group5
 description MLPPP Link to CustomerA
 qos max-bandwidth 4500                  
 ip address x.x.x.x 255.255.255.252
------------------------------------------------------
3com Interface stats:
====================================
<gateway-1>display interface Serial 1/0/0/8:0
Serial1/0/0/8:0 current state :UP  
Line protocol current state :UP
Description : MPP Link 1 of 3 to CustomerA
The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
Derived from T3 1/0/0 t1 8,  Timeslot(s) Used: 1-24,  baudrate is 1536000 bps
Internet protocol processing : disabled
Link layer protocol is PPP
LCP opened, MP opened
CRC type is 16
Output queue : (Urgent queuing : Size/Length/Discards)  0/50/0
Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0
Output queue : (FIFO queuing : Size/Length/Discards)  0/75/0
Last clearing of counters: 12:22:59 CST Tue 03/23/2010
    Last 300 seconds input rate 14010.16 bytes/sec, 112081 bits/sec, 114.34 packets/sec
    Last 300 seconds output rate 110106.57 bytes/sec, 880852 bits/sec, 233.22 packets/sec
    78149074 packets input,  2876857288 bytes, 0 no buffers
    98745086 packets output, 1183339548 bytes, 0 no buffers
    84874 input errors, 8831 CRC, 0 frame errors
    0 overruns, 76043 aborted sequences, 0 input no buffers


<gateway-1>display interface Serial 1/0/0/9:0
Serial1/0/0/9:0 current state :UP  
Line protocol current state :UP
Description : MPP Link 2 of 3 to CustomerA
The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
Derived from T3 1/0/0 t1 9,  Timeslot(s) Used: 1-24,  baudrate is 1536000 bps
Internet protocol processing : disabled
Link layer protocol is PPP
LCP opened, MP opened
CRC type is 16
Output queue : (Urgent queuing : Size/Length/Discards)  0/50/0
Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0
Output queue : (FIFO queuing : Size/Length/Discards)  0/75/0
Last clearing of counters: 12:23:03 CST Tue 03/23/2010
    Last 300 seconds input rate 13947.71 bytes/sec, 111581 bits/sec, 114.26 packets/sec
    Last 300 seconds output rate 110086.57 bytes/sec, 880692 bits/sec, 233.13 packets/sec
    77484060 packets input,  2742024908 bytes, 0 no buffers
    98103672 packets output, 979581242 bytes, 0 no buffers
    197691 input errors, 21267 CRC, 0 frame errors
    0 overruns, 176424 aborted sequences, 0 input no buffers


<gateway-1>display interface Serial 1/0/0/10:0
Serial1/0/0/10:0 current state :UP  
Line protocol current state :DOWN
Description : MPP Link 3 of 3 to CustomerA
The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
Derived from T3 1/0/0 t1 10,  Timeslot(s) Used: 1-24,  baudrate is 1536000 bps
Internet protocol processing : disabled
Link layer protocol is PPP
LCP stopped
CRC type is 16
Output queue : (Urgent queuing : Size/Length/Discards)  0/50/0
Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0
Output queue : (FIFO queuing : Size/Length/Discards)  0/75/0
Last clearing of counters: 07:05:36 CST Wed 04/14/2010
    Last 300 seconds input rate 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec
    Last 300 seconds output rate 3.61 bytes/sec, 28 bits/sec, 0.11 packets/sec
    0 packets input,  0 bytes, 0 no buffers
    1105 packets output, 34255 bytes, 0 no buffers
    0 input errors, 0 CRC, 0 frame errors
    0 overruns, 0 aborted sequences, 0 input no buffers

<gateway-1>display interface Mp-group 5
Mp-group5 current state :UP  
Line protocol current state :UP
Description : MLPPP Link to CustomerA
The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
Internet Address is x.x.x.x/30
Link layer protocol is PPP
LCP opened, MP opened, IPCP opened, OSICP stopped
Physical is MP, baudrate: 3072000 bps
Output queue : (Urgent queuing : Size/Length/Discards)  0/50/0
Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0
Output queue : (Class Based queuing : Size/Discards)  0/62605
    Queue Size: 0/0/0 (EF/AF/BE)
    BE queues:  0/1/256 (Active/Max active/Total)
    AF queues:  1 (Allocated)
    Bandwidth(Kbps): 0% /3600 (Available/Max reserve)

    Last 300 seconds input:  26423.00 bytes/sec 227.00 packets/sec
    Last 300 seconds output:  232920.00 bytes/sec 264.00 packets/sec
    7432081 packets input, 1523687683 bytes, 0 drops
    8055157 packets output, 679567041 bytes, 62605 drops
===========================================


----

Adtran Side:
----------------------------------------------------------------
interface t1 0/1
  tdm-group 1 timeslots 1-24 speed 64
  no shutdown
!
interface t1 0/2
  tdm-group 1 timeslots 1-24 speed 64
  no shutdown
!
interface t1 0/3
  tdm-group 1 timeslots 1-24 speed 64
  no shutdown
!

interface ppp 1
  description MLPPP-toISP
  ip address  x.x.x.x  255.255.255.252
  media-gateway ip primary
  ppp multilink
  ppp multilink maximum 4
  no shutdown
  cross-connect 1 t1 0/1 1 ppp 1
  cross-connect 2 t1 0/2 1 ppp 1
  cross-connect 3 t1 0/3 1 ppp 1
!

timing-source t1 0/1
!
timing-source t1 0/2 secondary
------------------------------------------------------
Adtran Interface Stats:
====================================
CustomerA#sh int t1 0/1
t1 0/1 is UP
  Receiver has no alarms
  T1 coding is B8ZS, framing is ESF
  FDL type is ANSI
  Line build-out is 0dB
  No remote loopbacks, No network loopbacks
  Acceptance of remote loopback requests enabled
  Tx Alarm Enable: rai
  Last clearing of counters 1d 16:35:53
    loss of frame  : 6, last occurred 1d 15:53:35
    loss of signal : 11, last occurred 1d 15:53:35
    AIS alarm      : 1, last occurred 1d 16:28:25
    Remote alarm   : 0

  DS0 Status: 123456789012345678901234
              XXXXXXXXXXXXXXXXXXXXXXXX
  Status Legend: '-' = DS0 is not allocated
                 'X' = DS0 is allocated (nailed)

  Signaling Bit Status: 123456789012345678901234
                   RxA: 000000000000000000000000
                   RxB: 000000000000000000000000

                   TxA: 000000000000000000000000
                   TxB: 000000000000000000000000
                        123456789012345678901234

  Line Status: -- No Alarms --

  5 minute input rate 468928 bits/sec, 145 packets/sec
  5 minute output rate 100672 bits/sec, 64 packets/sec
  Current Performance Statistics:
    0 Errored Seconds, 0 Bursty Errored Seconds
    0 Severely Errored Seconds, 0 Severely Errored Frame Seconds
    0 Unavailable Seconds, 0 Path Code Violations
    0 Line Code Violations, 0 Controlled Slip Seconds
    0 Line Errored Seconds, 0 Degraded Minutes

  TDM group 1, line protocol is UP
  Encapsulation PPP (ppp 1)
    7058536 packets input, 2357320159 bytes, 79248 no buffer
    0 runts, 288 giants, 0 throttles
    4165032 input errors, 731173 CRC, 2341666 frame
    1012945 abort, 0 discards, 0 overruns
    3779927 packets output, 798430887 bytes, 0 underruns
CustomerA#sh int t1 0/2
t1 0/2 is UP
  Receiver has no alarms
  T1 coding is B8ZS, framing is ESF
  FDL type is ANSI
  Line build-out is 0dB
  No remote loopbacks, No network loopbacks
  Acceptance of remote loopback requests enabled
  Tx Alarm Enable: rai
  Last clearing of counters 1d 16:35:55
    loss of frame  : 12, last occurred 1d 15:57:32
    loss of signal : 7, last occurred 1d 15:57:32
    AIS alarm      : 0
    Remote alarm   : 0

  DS0 Status: 123456789012345678901234
              XXXXXXXXXXXXXXXXXXXXXXXX
  Status Legend: '-' = DS0 is not allocated
                 'X' = DS0 is allocated (nailed)

  Signaling Bit Status: 123456789012345678901234
                   RxA: 000000000000000000000000
                   RxB: 000000000000000000000000

                   TxA: 000000000000000000000000
                   TxB: 000000000000000000000000
                        123456789012345678901234

  Line Status: -- No Alarms --

  5 minute input rate 469184 bits/sec, 145 packets/sec
  5 minute output rate 99952 bits/sec, 64 packets/sec
  Current Performance Statistics:
    0 Errored Seconds, 0 Bursty Errored Seconds
    0 Severely Errored Seconds, 0 Severely Errored Frame Seconds
    0 Unavailable Seconds, 0 Path Code Violations
    0 Line Code Violations, 0 Controlled Slip Seconds
    0 Line Errored Seconds, 0 Degraded Minutes

  TDM group 1, line protocol is UP
  Encapsulation PPP (ppp 1)
    7008064 packets input, 2352598357 bytes, 0 no buffer
    0 runts, 77 giants, 0 throttles
    584737 input errors, 64392 CRC, 496523 frame
    23822 abort, 0 discards, 0 overruns
    3730206 packets output, 792140456 bytes, 0 underruns
CustomerA#sh int t1 0/3
t1 0/3 is UP
  Receiver has no alarms
  T1 coding is B8ZS, framing is ESF
  FDL type is ANSI
  Line build-out is 0dB
  No remote loopbacks, No network loopbacks
  Acceptance of remote loopback requests enabled
  Tx Alarm Enable: rai
  Last clearing of counters 02:53:01
    loss of frame  : 0
    loss of signal : 0
    AIS alarm      : 0
    Remote alarm   : 0

  DS0 Status: 123456789012345678901234
              XXXXXXXXXXXXXXXXXXXXXXXX
  Status Legend: '-' = DS0 is not allocated
                 'X' = DS0 is allocated (nailed)

  Signaling Bit Status: 123456789012345678901234
                   RxA: 000000000000000000000000
                   RxB: 000000000000000000000000

                   TxA: 000000000000000000000000
                   TxB: 000000000000000000000000
                        123456789012345678901234

  Line Status: -- No Alarms --

  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 64 bits/sec, 0 packets/sec
  Current Performance Statistics:
    6 Errored Seconds, 0 Bursty Errored Seconds
    0 Severely Errored Seconds, 0 Severely Errored Frame Seconds
    0 Unavailable Seconds, 0 Path Code Violations
    0 Line Code Violations, 6 Controlled Slip Seconds
    0 Line Errored Seconds, 0 Degraded Minutes

  TDM group 1, line protocol is UP
  Encapsulation PPP (ppp 1)
    0 packets input, 0 bytes, 0 no buffer
    0 runts, 0 giants, 0 throttles
    0 input errors, 0 CRC, 0 frame
    0 abort, 0 discards, 0 overruns
    2870 packets output, 77471 bytes, 0 underruns

CustomerA#sh int ppp 1
ppp 1 is UP
  Configuration:
    Description: MLPPP-toISP
    Keep-alive is set (10 sec.)
    Multilink
      MTU = 1500, MRRU = 1520
    No authentication
    IP is configured
      x.x.x.x  255.255.255.252
  Link thru t1 0/1 is UP; LCP state is OPENED, negotiated MTU is 1500
    Receive: bytes=2360305147, pkts=7067427, errors=340
    Transmit: bytes=800150455, pkts=3813037, errors=0
    5 minute input rate 440480 bits/sec, 146 packets/sec
    5 minute output rate 121880 bits/sec, 66 packets/sec
  Link thru t1 0/2 is UP; LCP state is OPENED, negotiated MTU is 1500
    Receive: bytes=2355462513, pkts=7016610, errors=3
    Transmit: bytes=793856594, pkts=3762802, errors=0
    5 minute input rate 440688 bits/sec, 146 packets/sec
    5 minute output rate 122016 bits/sec, 66 packets/sec
  Link thru t1 0/3 is DOWN; LCP state is REQSENT
    Receive: bytes=0, pkts=0, errors=0
    Transmit: bytes=29106, pkts=1078, errors=0
    5 minute input rate 0 bits/sec, 0 packets/sec
    5 minute output rate 64 bits/sec, 0 packets/sec
  Bundle information
    Queueing method: weighted fair
    HDLC tx ring limit: 2
    Output queue: 0/88/460/64/0 (size/highest/max total/threshold/drops)
      Conversations  0/22/256 (active/max active/max total)
      Available Bandwidth 456 kilobits/sec
    IP is UP, IPCP state is OPENED
      Address=x.x.x.x Mask=255.255.255.252
      Peer address=x.x.x.x
      IP MTU=1500, Bandwidth=3072 Kbps
    LLDPCP State is STOPPED
===============================================


We've got t1 0/1 and 0/2 up and passing traffic with no issues, the third t1 just will not link!

Hopefully someone will run across this and be able to shed some light!

Thanks all!
LVL 1
mikedaddyAsked:
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Steve JenningsIT ManagerCommented:
Call Adran . . .they have excellent support . . . you may need to email them if you don't have a support contract.

Good luck,
SteveJ
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mikedaddyAuthor Commented:
Thanks for the tip, I did call adtran and they verified my config was correct.

So they problem ended up being that the carrier slotted the T1 in a different DS3 channel than what they had stated on our FOC, and coincidentally, there was a turned down T1 in the slot they had stated, which was still connected to a smart jack.
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Steve JenningsIT ManagerCommented:
Glad it worked out.

SteveJ
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