How to Clear Switch Configuration: Difference between revisions
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# | '''To clear switch configuration''' | ||
Issue the erase starting-config command. | |||
Switch#erase startup-config | |||
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm] | |||
[OK] | |||
Erase of nvram: complete | |||
Switch# | |||
At this stage, the switch configuration has reset to the factory defaults, with the exclusion of the VLAN information. VLANs are kept in a seperate file from the startup-config (NVRAM). | |||
'''To verify the VLAN information''' | |||
Issue the show vlan brief command | |||
Switch#show vlan brief | |||
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 | |||
Gi0/1, Gi0/2 | |||
10 Faculty/Staff active | |||
20 Students active | |||
30 Wireless active | |||
99 Management active | |||
1002 fddi-default act/unsup | |||
1003 token-ring-default act/unsup | |||
1004 fddinet-default act/unsup | |||
1005 trnet-default act/unsup | |||
Switch# | |||
'''Delete the VLAN information from Flash''' | |||
Switch#delete flash:vlan.dat | |||
Delete filename [vlan.dat]? | |||
Delete flash:vlan.dat? [confirm] | |||
Switch# | |||
'''Reload the switch''' | |||
Do not save at the prompt. Otherwise, the switch reloads with the current running configuration and does not clear the switch configuration. | |||
Switch#reload | |||
System configuration has been modified. Save? [yes/no]: n | |||
Proceed with reload? [confirm] | |||
<output omitted> | |||
Would you like to terminate autoinstall? [yes]: y | |||
--- System Configuration Dialog --- | |||
Would you like to enter the initial configuration dialog? [yes/no]: n | |||
Switch> | |||
'''After reload''' | |||
check the VLAN information with the show vlan brief command. | |||
Switch#show vlan brief | |||
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 | |||
Gi0/1, Gi0/2 | |||
1002 fddi-default act/unsup | |||
1003 token-ring-default act/unsup | |||
1004 fddinet-default act/unsup | |||
1005 trnet-default act/unsup | |||
Compiled Thu 19-Jul-07 20:06 by nachen | |||
Revision as of 04:13, 16 October 2010
To clear switch configuration
Issue the erase starting-config command.
Switch#erase startup-config Erasing the nvram filesystem will remove all configuration files! Continue? [confirm] [OK] Erase of nvram: complete Switch#
At this stage, the switch configuration has reset to the factory defaults, with the exclusion of the VLAN information. VLANs are kept in a seperate file from the startup-config (NVRAM).
To verify the VLAN information
Issue the show vlan brief command
Switch#show vlan brief
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
Gi0/1, Gi0/2
10 Faculty/Staff active 20 Students active 30 Wireless active 99 Management active 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup Switch#
Delete the VLAN information from Flash
Switch#delete flash:vlan.dat Delete filename [vlan.dat]? Delete flash:vlan.dat? [confirm]
Switch#
Reload the switch
Do not save at the prompt. Otherwise, the switch reloads with the current running configuration and does not clear the switch configuration.
Switch#reload
System configuration has been modified. Save? [yes/no]: n Proceed with reload? [confirm]
<output omitted>
Would you like to terminate autoinstall? [yes]: y
--- System Configuration Dialog ---
Would you like to enter the initial configuration dialog? [yes/no]: n Switch>
After reload
check the VLAN information with the show vlan brief command.
Switch#show vlan brief
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
Gi0/1, Gi0/2
1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup Compiled Thu 19-Jul-07 20:06 by nachen