How to upgrade IOS of Cisco Catalyst 2960 Switch

Cisco 2960 IOS upgrade:

To upgrade IOS of Cisco Catalyst 2960 Switch we have to follow some basic checklist first-

a.    Check for the older version.

b.    Backup Older Version of IOS.

c.    Backup Switch Configuration.

Required Softwares –

a.    TFTP server utility for taking/ restoring backup of IOS.

b.    Putty / Hyper-terminal Utility to access switch.

Commands to Check IOS version –

Switch01#sh flash:

Directory of flash:/

2 -rwx 3096 Mar 1 1993 05:40:50 +05:30 multiple-fs

3 -rwx 10644 Mar 1 1993 05:38:52 +05:30 config.text

4 -rwx 5 Mar 1 1993 05:38:52 +05:30 private-config.text

6 -rwx 8040418 Mar 1 1993 01:28:27 +05:30 c2960-lanbasek9-mz.122-46.bin

32514048 bytes total (24457728 bytes free

Commands to take Backup of Old IOS –

a.    Start TFTP software on PC (Ip address of PC – 10.10.11.60).  Location were backup will be stored – C:\tftpd32.273

b.    Commands on Switch –

Switch01#copy flash: tftp:

Source filename []? c2960-lanbasek9-mz.122-46.bin

Address or name of remote host []? 10.10.11.60

Destination filename [c2960-lanbasek9-mz.122-46.bin]? c2960-lanbasek9-mz.122-46.bin

! Com pleted.

Commands to take Backup of Switch Configuration –

a. Start TFTP software on PC (Ip address of PC – 10.10.11.60)

Location were backup will be stored – C:\tftpd32.273

b. Commands on Switch -

Switch01#copy startup tftp:

Address or name of remote host []? 10.10.11.60

Destination filename [Switch01-confg]? Switch01-confg

! Completed.

Upgrading Cisco Catalyst 2960 Switch IOS –

TFTP Settings – Select the directory where New Cisco IOS is located –

i.e. C:\tftpd32.273

Commands on Switch –

Switch01#copy tftp: flash

Address or name of remote host []? 10.10.11.60

Source filename[]? c2960-lanbasek9-mz.122-50.SE3.bin

Destination filename [c2960-lanbasek9-mz.122-50.SE3.bin]?

! Completed.

Check for new IOS in Flash –

Switch01#sh flash:

Directory of flash:/

2 -rwx 3096 Mar 1 1993 05:40:50 +05:30 multiple-fs

3 -rwx 10644 Mar 1 1993 05:38:52 +05:30 config.text

4 -rwx 5 Mar 1 1993 05:38:52 +05:30 private-config.text

6 -rwx 8040418 Mar 1 1993 01:28:27 +05:30 c2960-lanbasek9-mz.122-46.bin

7 -rwx 8040418 Feb 11 2010 01:28:27 +05:30 c2960-lanbasek9-mz.122-50.SE3.bin

Now, the Up gradation is Completed, we have to remove Old IOS from Flash –

Switch01#delete flash:c2960-lanbasek9-mz.122-46.bin

! Completed.

Setup new IOS as the default IOS during Boot process –

Switch01(config)#boot system flash: c2960-lanbasek9-mz.122-50.SE3.bin

Reload Cisco Switch for new IOS to Take effect -

Switch01# reload