[c-nsp] Virtual Access int down after IOS upgrade

[Todd Shipway]

We just upgraded a 7500 to 12.4(23) and everything works great except
DSL connections over atm card.  ATM interfaces are up, all configuration
is in place,  pvc interfaces are up, virtual templates are in place.
But the virtual-access interface refuses to come up.  Anyone have any
clues as to what we shoudl be looking at?  Everything I see seems like
it shoudl be working good.


summit#sh interfaces atm 10/0/0
ATM10/0/0 is up, line protocol is up 
  Hardware is cyBus ATM
  MTU 4470 bytes, sub MTU 4470, BW 155520 Kbit/sec, DLY 80 usec, 
     reliability 129/255, txload 1/255, rxload 1/255
  Encapsulation ATM, loopback not set
  Encapsulation(s): AAL5 , PVC mode
  2047 maximum active VCs, 1024 VCs per VP, 88 current VCCs
  VC Auto Creation Disabled.
  VC idle disconnect time: 300 seconds
  Last input 00:02:08, output 00:02:08, output hang never
  Last clearing of "show interface" counters never
  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 30000 bits/sec, 56 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     37010 packets input, 2527473 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     37305 input errors, 0 CRC, 0 frame, 63 overrun, 0 ignored, 1 abort
     1 packets output, 56 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
summit#sh interfaces atm 10/0/0.1
ATM10/0/0.1 is up, line protocol is up 
  Hardware is cyBus ATM
  MTU 4470 bytes, BW 155520 Kbit/sec, DLY 80 usec, 
     reliability 128/255, txload 1/255, rxload 1/255
  Encapsulation ATM
     35184 packets input, 2260236 bytes
     0 packets output, 0 bytes 
     1 OAM cells input, 1 OAM cells output
  AAL5 Oversized SDUs : 0
  Last clearing of "show interface" counters never
summit#sh interfaces virtual-access 1
Virtual-Access1 is down, line protocol is down 
  Hardware is Virtual Access interface
  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100000 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Closed
  Base VtMgr vaccess
  Vaccess status 0x0, loopback not set
  DTR is pulsed for 5 seconds on reset
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 00:11:07
  Input queue: 0/4096/0/0 (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 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

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