[c-nsp] Disappearing Interfaces in config

Charles Sprickman spork at inch.com
Mon Oct 18 14:07:51 EDT 2004

I've got a stumper here...

We've got a 7206 running 12.2(8)T5 (cco expired) and I noticed that rancid
has started showing me about 5 interfaces that appear and then disappear
on each run.

I took note of one and found that I can see the interface is configured:

router.bway.net#sh in atm 4/0.2491
ATM4/0.2491 is up, line protocol is up
  Hardware is ENHANCED ATM PA
  Interface is unnumbered. Using address of Loopback8 (216.220.x.1)
  MTU 4470 bytes, BW 40704 Kbit, DLY 190 usec,
     reliability 255/255, txload 207/255, rxload 73/255
  Encapsulation ATM
  60187 packets input, 4705441 bytes
  62612 packets output, 4946027 bytes
  1 OAM cells input, 1 OAM cells output
  AAL5 CRC errors : 0
  AAL5 SAR Timeouts : 0
  AAL5 Oversized SDUs : 0

And after doing a "wr mem" I see no sign of it in the config:

router.bway.net#sh conf | inc 2491
ip route 216.220.x.91 ATM4/0.2491

The route to the pvc is there, but no matching config for the interface.

I've got 1721 pvcs configured:

4095 maximum active VCs, 1721 current VCCs

Any ideas?  This just came out of nowhere.  No reboot in over a year, and
all of our pvc configs are done in advance, so we have not added any
interfaces since maybe 5 months ago.



Charles Sprickman
spork at inch.com

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