[c-nsp] T1 down in all MLPPP Bundles

Wed Feb 1 08:31:33 EST 2006

I did a few searches and found nothing similar and of course I am in a time
crunch.

I realized that we have a T1 down in all our MLPPP Bundles.  They each have
2 T1's (clear channel ppp) and the 2nd one is down/down on both sides.  The
carrier can loop all the circuits and its too much of a co-incidence to be
all circuit issues I think. I am embarassed to say I am not sure when this
occurred.  We did an IOS upgrade last week from 12.1 w/encrypt IOS to 12.2
Enterprise with MPLS support (but not configured yet for VPN's, mpls int,
mtu changes, etc)

The strange part is the MLPPP is working with the single T1 (info, configs
below) so most of the articles I read on MLPPP Problems was with Auth
issues, etc but I am figuring this is different.  These all did work
previously without issue, no other config changes have been done.  I have
tried the obvious, reboots, shut / no shut, etc.   Any info / pointers is
appreciated.   Some detail follows below.

Thanks
Eric

IOS (tm) 7200 Software (C7200-JS-M), Version 12.2(31), RELEASE SOFTWARE
(fc2)
System image file is "slot0:c7200-js-mz.122-31.bin"
cisco 7206VXR (NPE300) processor (revision D) with 229376K/65536K bytes of
memory.
PCI bus mb0_mb1 (Slots 0, 1, 3 and 5) has a capacity of 600 bandwidth
points.
Current configuration on bus mb0_mb1 has a total of 380 bandwidth points.
This configuration is within the PCI bus capacity and is supported.

PCI bus mb2 (Slots 2, 4, 6) has a capacity of 600 bandwidth points.
Current configuration on bus mb2 has a total of 470 bandwidth points
This configuration is within the PCI bus capacity and is supported.

Multilink40, bundle name is A
  Bundle up for 02:43:26
  0 lost fragments, 0 reordered, 0 unassigned
  0 discarded, 0 lost received, 1/255 load
  0x0 received sequence, 0x0 sent sequence
  Member links: 1 active, 1 inactive (max not set, min not set)
    Se3/0/5:1, since 02:43:26, no frags rcvd
    Se2/1/1:1 (inactive)

Multilink20, bundle name is B
  Bundle up for 5d12h
  0 lost fragments, 0 reordered, 0 unassigned
  0 discarded, 0 lost received, 1/255 load
  0x0 received sequence, 0x0 sent sequence
  Member links: 1 active, 1 inactive (max not set, min not set)
    Se3/0/12:1, since 5d12h, no frags rcvd
    Se2/0/13:1 (inactive)

Multilink10, bundle name is C
  Bundle up for 2w4d
  0 lost fragments, 0 reordered, 0 unassigned
  0 discarded, 0 lost received, 1/255 load
  0xB771ED received sequence, 0x97AD1D sent sequence
  Member links: 1 active, 1 inactive (max not set, min not set)
    Se2/1/19:1, since 2w4d, last rcvd seq B771EC
    Se2/1/3:1 (inactive)

interface Multilink10
 description MLPPP to C
 ip unnumbered FastEthernet4/0
 ip access-group 161 in
 ip route-cache flow
 ip policy route-map private-net
 no cdp enable
 ppp multilink
 multilink-group 10
!
interface Multilink20
 description connected to B
 ip address 10.10.89.5 255.255.255.252
 ip route-cache flow
 no cdp enable
 ppp multilink
 multilink-group 20
!
interface Multilink40
 description connected to A
 bandwidth 3000
 ip unnumbered FastEthernet4/0
 ip access-group 131 in
 ip access-group 130 out
 ip route-cache flow
 no cdp enable
 ppp multilink
 multilink-group 40
!

interface Serial2/1/3:1
 description connected to C#1
 bandwidth 1544
 no ip address
 encapsulation ppp
 ip route-cache flow
 ip mroute-cache
 no fair-queue
 ppp multilink
 multilink-group 10

interface Serial2/1/19:1
 description connected to C#2
 bandwidth 1544
 no ip address
 encapsulation ppp
 ip route-cache flow
 ip mroute-cache
 no fair-queue
 ppp multilink
 multilink-group 10
end

Serial2/1/3:1 is down, line protocol is down
  Hardware is PA-MC-2T3+
  Description: connected to C#1
  MTU 1500 bytes, BW 1544 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 Closed, multilink Closed                 <---------- ???
  Closed: CDPCP
  Last input 4d18h, output 4d18h, output hang never
  Last clearing of "show interface" counters 3d20h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  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 alarm present
  Timeslot(s) Used: 1-24, subrate: 1536Kb/s, transmit delay is 0 flags
non-inverted data

Serial2/1/19:1 is up, line protocol is up
  Hardware is PA-MC-2T3+
  Description: connected to C#2
  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
     reliability 255/255, txload 36/255, rxload 25/255
  Encapsulation PPP, crc 16, loopback not set
  Keepalive set (10 sec)
  LCP Open, multilink Open
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 3d20h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 156000 bits/sec, 50 packets/sec
  5 minute output rate 221000 bits/sec, 51 packets/sec
     9653307 packets input, 2951415593 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     6 input errors, 2 CRC, 4 frame, 0 overrun, 0 ignored, 0 abort
     8641757 packets output, 3867772573 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions no alarm present
  Timeslot(s) Used: 1-24, subrate: 1536Kb/s, transmit delay is 0 flags
non-inverted data

Multilink10 is up, line protocol is up
  Hardware is multilink group interface
  Description: MLPPP to C
  Interface is unnumbered. Using address of FastEthernet4/0 (192.168.0.2)
  MTU 1500 bytes, BW 1544 Kbit, DLY 100000 usec,
     reliability 255/255, txload 36/255, rxload 23/255
  Encapsulation PPP, loopback not set
  Keepalive set (10 sec)
  DTR is pulsed for 2 seconds on reset
  LCP Open, multilink Open
  Open: IPCP
  Last input 00:08:16, output never, output hang never
  Last clearing of "show interface" counters 3d20h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 19613
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 145000 bits/sec, 50 packets/sec
  5 minute output rate 221000 bits/sec, 51 packets/sec
     9649179 packets input, 2951879356 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
     8637782 packets output, 3851943146 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions