I am assuming that you already know how to access your switch and you do not need any help with this. Log into the switch using Putty and wait until the prompt appears awaiting commands.
% Please answer 'yes' or 'no'. Would you like to enter the initial configuration dialog? [yes/no]: no Press RETURN to get started! Switch> 00:02:00: %LINK-5-CHANGED: Interface Vlan1, changed state to administratively down 00:02:01: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down |
Type this command to enable the prompt that we need.
en
Switch>en |
Then type this command to erase the configuration on the switch.
erase startup-config
This is the result of this command. This is removing all of the configuration changes made to the Cisco router configuration.
Switch#erase startup-config Erasing the nvram filesystem will remove all configuration files! Continue? [confirm] [OK] Erase of nvram: complete |
And now we run the reload command to reinstall a vanilla Cisco IOS configuration.
Switch#reload Proceed with reload? [confirm] 00:03:17: %SYS-5-RELOAD: Reload requested C2950 Boot Loader (C2950-HBOOT-M) Version 12.1(11r)EA1, RELEASE SOFTWARE (fc1) Compiled Mon 22-Jul-02 17:18 by antonino WS-C2950-24 starting... Base ethernet MAC Address: 00:0e:84:d8:b3:40 Xmodem file system is available. Initializing Flash... flashfs[0]: 77 files, 3 directories flashfs[0]: 0 orphaned files, 0 orphaned directories flashfs[0]: Total bytes: 7741440 flashfs[0]: Bytes used: 5258240 flashfs[0]: Bytes available: 2483200 flashfs[0]: flashfs fsck took 7 seconds. ...done initializing flash. Boot Sector Filesystem (bs:) installed, fsid: 3 Parameter Block Filesystem (pb:) installed, fsid: 4 Loading "flash:/c2950-i6q4l2-mz.121-14.EA1a.bin"...######################################################################## ########################################################################################################################### ################################################################################################################# File "flash:/c2950-i6q4l2-mz.121-14.EA1a.bin" uncompressed and installed, entry point: 0x80010000 executing... Restricted Rights Legend Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c) of the Commercial Computer Software - Restricted Rights clause at FAR sec. 52.227-19 and subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS sec. 252.227-7013. cisco Systems, Inc. 170 West Tasman Drive San Jose, California 95134-1706 Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(14)EA1a, RELEASE SOFTWARE (fc1) Copyright (c) 1986-2003 by cisco Systems, Inc. Compiled Tue 02-Sep-03 03:33 by antonino Image text-base: 0x80010000, data-base: 0x805C0000 Initializing flashfs... flashfs[1]: 77 files, 3 directories flashfs[1]: 0 orphaned files, 0 orphaned directories flashfs[1]: Total bytes: 7741440 flashfs[1]: Bytes used: 5258240 flashfs[1]: Bytes available: 2483200 flashfs[1]: flashfs fsck took 7 seconds. flashfs[1]: Initialization complete. Done initializing flashfs. POST: System Board Test : Passed POST: Ethernet Controller Test : Passed ASIC Initialization Passed POST: FRONT-END LOOPBACK TEST : Passed cisco WS-C2950-24 (RC32300) processor (revision M0) with 20710K bytes of memory. Processor board ID FOC0751S0PK Last reset from system-reset Running Standard Image 24 FastEthernet/IEEE 802.3 interface(s) 32K bytes of flash-simulated non-volatile configuration memory. Base ethernet MAC Address: 00:0E:84:D8:B3:40 Motherboard assembly number: 73-5781-12 Power supply part number: 34-0965-01 Motherboard serial number: FOC07510SXT Power supply serial number: DAB0745FFSW Model revision number: M0 Motherboard revision number: B0 Model number: WS-C2950-24 System serial number: FOC0751S0PK --- System Configuration Dialog --- Would you like to enter the initial configuration dialog? [yes/no]: n |
Now you may enter any changes you wish to make to create your VLAN and routing setups with a fresh vanilla switch setup. This is very easy to do and an essential part of learning Cisco CCNA certifications.
Here is how to view the vlan configuration.
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 act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup 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 Remote SPAN VLANs ------------------------------------------------------------------------------ Primary Secondary Type Ports ------- --------- ----------------- ------------------------------------------ |