Unplanned deletion of the VLAN interface

Unanswered Question
Aug 19th, 2008
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Hello everyone

Few days ago we had a planned change in our network to add a new backup link and add it to the BGP process on the router . but on doing that , the engineer decided to use an old port that was configured for VLAN 14 but wasn't being used , while , the VLAN itself , is trunked on this router through another switch and then goes out the main uplink to the rest of the network .


the problem is , once the guy deleted the config over this port ( including the part linking it to vlan14 ) , the main vlan 14 interfaces was also deleted !!

Anyone knows why did this happen ? is it a bug or something ?




sh ver

Cisco IOS Software, C3750 Software (C3750-IPSERVICES-M), Version 12.2(25)SEB4, R ELEASE SOFTWARE (fc1)

Copyright (c) 1986-2005 by Cisco Systems, Inc.

Compiled Tue 30-Aug-05 15:47 by yenanh


ROM: Bootstrap program is C3750 boot loader

BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(14r)EA1a, RELEASE SOFTWA RE (fc1)


r1.ako.corp uptime is 1 year, 51 weeks, 5 days, 19 hours, 25 minutes

System returned to ROM by power-on

System restarted at 20:34:44 NZ Wed Aug 23 2006

System image file is "flash:c3750-ipservices-mz.122-25.SEB4/c3750-ipservices-mz. 122-25.SEB4.bin"


cisco WS-C3750G-24TS (PowerPC405) processor (revision M0) with 118784K/12280K by tes of memory.

Processor board ID CAT0946Z3U5

Last reset from power-on

17 Virtual Ethernet interfaces

56 Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.


512K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address : 00:16:46:5B:E8:00

Motherboard assembly number : 73-7058-13

Power supply part number : 341-0045-01

Motherboard serial number : CAT094705DV

Power supply serial number : LIT093902PG

Model revision number : M0

Motherboard revision number : C0

Model number : WS-C3750G-24TS-E

System serial number : CAT0946Z3U5

Hardware Board Revision Number : 0x09



Switch Ports Model SW Version SW Image

------ ----- ----- ---------- ----------

1 28 WS-C3750G-24TS 12.2(25)SEB4 C3750-IPSERVICES-M

* 2 28 WS-C3750G-24TS 12.2(25)SEB4 C3750-IPSERVICES-M



Switch 01

---------

Switch Uptime : 1 year, 51 weeks, 5 days, 19 hours, 12 minutes

Base ethernet MAC Address : 00:16:46:5B:E2:80

Motherboard assembly number : 73-7058-13

Power supply part number : 341-0045-01

Motherboard serial number : CAT094705HK

Power supply serial number : LIT093902VX

Model revision number : M0

Motherboard revision number : C0

Model number : WS-C3750G-24TS-E

System serial number : CAT0946Z3T2


Configuration register is 0xF



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