Upgrading IOS Version: Difference between revisions
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You will need a tftp server on which to put the latest IOS version and to which to can backup the old one. A Windows based one is easy [http://tftpd32.jounin.net/]. This assumes that the switch already has an IP set. | You will need a tftp server on which to put the latest IOS version and to which to can backup the old one. A Windows based one is easy [http://tftpd32.jounin.net/]. This assumes that the switch already has an IP set, otherwise follow this link [http://www.peterpap.net/index.php/Assigning_an_IP_Address_to_a_Switch]. Below works for Catalyst 29XX and 37XX models. For Catalyst 49XX models, change '''''flash''''' to '''''bootflash'''''. | ||
1. Determine the boot image on the switch: | 1. Determine the boot image on the switch: | ||
switch# show flash | switch# show flash | ||
2. Backup the flash image to the tftp server | |||
switch# copy flash:flashimagename tftp:// | switch# copy flash:flashimagename tftp://192.168.X.X/flashimagename | ||
where 192.168.X.X is the IP address of the TFTP server. | |||
3. If there is room, leave the old image in place. Otherwise do <font color=red>'''OPTIONAL and DANGEROUS'''</font>: | |||
switch# | switch# delete flash:imagename | ||
If the flash image is in a directory: | |||
switch# config t | switch# delete /force /recursive flash:flashdirectory | ||
switch(config)# no boot system flash:oldflashimage | |||
switch(config)# boot system flash:newflashimage | 4. Upload the new flashimage | ||
switch(config)# exit | |||
switch# wr mem | switch# copy tftp://192.168.X.X/newflashimage flash:newflashimage | ||
switch# reload | |||
5. Make the new image the boot image and reboot | |||
switch# config t | |||
switch(config)# no boot system flash:oldflashimage | |||
switch(config)# boot system flash:newflashimage | |||
switch(config)# exit | |||
switch# wr mem | |||
6. Reboot the switch | |||
switch# reload | |||
Latest revision as of 01:06, 29 November 2011
You will need a tftp server on which to put the latest IOS version and to which to can backup the old one. A Windows based one is easy [1]. This assumes that the switch already has an IP set, otherwise follow this link [2]. Below works for Catalyst 29XX and 37XX models. For Catalyst 49XX models, change flash to bootflash.
1. Determine the boot image on the switch:
switch# show flash
2. Backup the flash image to the tftp server
switch# copy flash:flashimagename tftp://192.168.X.X/flashimagename
where 192.168.X.X is the IP address of the TFTP server.
3. If there is room, leave the old image in place. Otherwise do OPTIONAL and DANGEROUS:
switch# delete flash:imagename
If the flash image is in a directory:
switch# delete /force /recursive flash:flashdirectory
4. Upload the new flashimage
switch# copy tftp://192.168.X.X/newflashimage flash:newflashimage
5. Make the new image the boot image and reboot
switch# config t switch(config)# no boot system flash:oldflashimage switch(config)# boot system flash:newflashimage switch(config)# exit switch# wr mem
6. Reboot the switch
switch# reload