Resetting Switch Configuration Including VLAN Configuration Files
Resetting Switch Configuration Including VLAN Configuration Files
To reset a switch to factory default settings use the erase statup-config or write erase command. These commands will not clear config-register or boot system settings. Boot system parameters are modified by using the boot command.
Note: If you don't have access to priveleged EXEC mode you must use the Recover Cisco Catalyst 2960 Switch Password process first.
1. Enter the write erase command from priveleged EXEC mode.
S1# write erase Erasing the nvram filesystem will remove all files! Continue? [confirm]y[OK] Erase of nvram: complete
2. Reload the switch by entering the reload command.
S1# reload System configuration has been modified. Save? [yes/no]: n !--- Do not save the configuration at this prompt. Otherwise, the switch !--- reloads with the current running configuration and does not reset to default. Proceed with reload? [confirm]y
When the reload is complete the switch has been reset to factory defaults except for the VLAN configuration.
Reset VLAN Configuration
1. Use the show VLAN command to verify the VLAN Information.
S1# show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
Fa0/5, Fa0/6, Fa0/7, Fa0/8
Fa0/9, Fa0/10, Fa0/11, Fa0/12
Fa0/13, Fa0/14, Fa0/15, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22, Fa0/23, Fa0/24
2 VLAN0002 active
3 VLAN0003 active
4 VLAN0004 active
Despite the erase of the startup configuration file, these user-created VLANs remain.
600 VLAN0600 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2 ---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------ 1 enet 100001 1500 - - - - - 1002 1003 2 enet 100002 1500 - - - - - 0 0 3 enet 100003 1500 - - - - - 0 0 4 enet 100004 1500 - - - - - 0 0 600 enet 100600 1500 - - - - - 0 0 1002 fddi 101002 1500 - - - - - 1 1003 1003 tr 101003 1500 1005 - - - srb 1 1002 1004 fdnet 101004 1500 - - 1 ibm - 0 0 1005 trnet 101005 1500 - - 1 IBM - 0 0
2. To verify the VLAN.dat file enter the dir flash: command. Do not forget the colon.
S1# dir flash:
Directory of flash:/
2 -rwx 2487439 Mar 11 1993 01:25:32 c2950-i6q4l2-mz.121-9.EA1d.bin 3 -rwx 840 Mar 20 1993 09:20:09 vlan.dat
This vlan.dat file stores user-configured VLANs.
4 -rwx 2491435 Mar 08 1993 16:14:13 c2950-mvr.bin 6 -rwx 42 Mar 01 1993 00:07:35 env_vars 7 -rwx 109 Mar 11 1993 01:23:56 info 8 drwx 640 Mar 11 1993 01:26:35 html 19 -rwx 109 Mar 11 1993 01:26:35 info.ver
7741440 bytes total (1088512 bytes free)
3. Delete the VLAN.dat file from the flash using the delete command.
S1#delete flash:vlan.dat Delete filename [vlan.dat]? !--- Press Enter. Delete flash:vlan.dat? [confirm]y
4. Reload the switch using the reload command.
S1# reload Proceed with reload? [confirm]y 4w5d: %SYS-5-RELOAD: Reload requested
5. When the switch is up verify the VLAN information by entering the show VLAN command again.
Switch# show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4
Fa0/5, Fa0/6, Fa0/7, Fa0/8
Fa0/9, Fa0/10, Fa0/11, Fa0/12
Fa0/13, Fa0/14, Fa0/15, Fa0/16
Fa0/17, Fa0/18, Fa0/19, Fa0/20
Fa0/21, Fa0/22, Fa0/23, Fa0/24
1002 fddi-default active
1003 token-ring-default active
1004 fddinet-default active
1005 trnet-default active
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2 ---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------ 1 enet 100001 1500 - - - - - 0 0 1002 fddi 101002 1500 - - - - - 0 0 1003 tr 101003 1500 - - - - - 0 0 1004 fdnet 101004 1500 - - - ieee - 0 0 1005 trnet 101005 1500 - - - IBM - 0 0 Switch#
User configured VLAN's should all be gone.