Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations Shaun E on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
Upgrade Cisco 2621 IOS
- Thread starter CPaul123
- Start date
gulfcharlie
IS-IT--Management
Use the show run command to see what software you are currently running if you want help installing the new IOS image then read on.
Use the "show flash" command to verify that you have enough memory on your system for the IOS software that you want to load. Flash memory is erasble reprogramable ROM that holds the operating system image and microcode. multiple versions can be sometimes be held here. RAM/DRAM stores routing tables, the ARP cash, and some other stuff, the current running configuration is also stored here. The backup/startup config file is stored in NVRAM (nonvolotile. ROM cointains contains diagnostics, bootstrap, and OS software
To replace the IOS first you should back-up a copy of the current IOS,just in case the new one doesn't work, use the copy flash tftp command for this. Of course you will need a computer to act as a TFTP server, after you use the command the router will ask for the IP address for the TFTP server then you are ready to copy your new IOS to your router. have your new image at the TFTP server and the name of it, the router will ask you for it then it will verify there is enough space and ask if want to erase the current one, if there is not enough space then erase the current image. After the image is loaded then use the show flash command again to check the size of the new image, make sure this the same size as the one in the TFTP server(make sure all of the image is there).
Then use the "boot system" command to specify the system iomage to use at startup.
Then use the "reload" to reload the router and you new image should be in there.
Let me know if it works
Later,
Charlie
Charlie@gate.net
Use the "show flash" command to verify that you have enough memory on your system for the IOS software that you want to load. Flash memory is erasble reprogramable ROM that holds the operating system image and microcode. multiple versions can be sometimes be held here. RAM/DRAM stores routing tables, the ARP cash, and some other stuff, the current running configuration is also stored here. The backup/startup config file is stored in NVRAM (nonvolotile. ROM cointains contains diagnostics, bootstrap, and OS software
To replace the IOS first you should back-up a copy of the current IOS,just in case the new one doesn't work, use the copy flash tftp command for this. Of course you will need a computer to act as a TFTP server, after you use the command the router will ask for the IP address for the TFTP server then you are ready to copy your new IOS to your router. have your new image at the TFTP server and the name of it, the router will ask you for it then it will verify there is enough space and ask if want to erase the current one, if there is not enough space then erase the current image. After the image is loaded then use the show flash command again to check the size of the new image, make sure this the same size as the one in the TFTP server(make sure all of the image is there).
Then use the "boot system" command to specify the system iomage to use at startup.
Then use the "reload" to reload the router and you new image should be in there.
Let me know if it works
Later,
Charlie
Charlie@gate.net
- Thread starter
- #3
It doesnt display well here but you have the basic IP package. I can give you the link but you need a CCO login and if you had that, you would not be here asking for the info 
Hope this helps
MikeS
Table 3: 2600 Feature Sets, Images, and Memory Requirements
2600 Feature Sets
Images
Flash
DRAM
ENTERPRISE/APPN IPSEC 3DES
c2600-ajk2s-mz
8
32
ENTERPRISE/APPN PLUS
c2600-ajs-mz
8
32
ENTERPRISE/APPN PLUS IPSEC 56
c2600-ajs56i-mz
8
32
REMOTE ACCESS SERVER
c2600-c-mz
4
20
IP/IPX/AT/DEC
c2600-d-mz
8
20
IP/IPX/AT/DEC/FW PLUS
c2600-dos-mz
8
24
IP/IPX/AT/DEC PLUS
c2600-ds-mz
8
24
IP
c2600-i-mz
4
20
IP/FW IPSEC 3DES
c2600-ik2os-mz
8
24
IP IPSEC 3DES
c2600-ik2s-mz
8
24
IP/FW
c2600-io-mz
4
20
IP/FW PLUS IPSEC 56
c2600-ios56i-mz
8
24
IP PLUS
c2600-is-mz
8
24
IP PLUS 40
c2600-is40-mz
8
24
IP PLUS IPSEC 56
c2600-is56i-mz
8
24
ENTERPRISE/FW 3DES
c2600-jk2os-mz
8
32
ENTERPRISE 3DES
c2600-jk2s-mz
8
32
ENTERPRISE/FW PLUS IPSEC 56
c2600-jos56i-mz
8
32
ENTERPRISE PLUS
c2600-js-mz
8
32
ENTERPRISE PLUS IPSEC 56
c2600-js56i-mz
8
32 Find me at
"Take advantage of the enemy's unreadiness, make your way by unexpected routes, and attack unguarded spots."
Sun Tzu
Hope this helps
MikeS
Table 3: 2600 Feature Sets, Images, and Memory Requirements
2600 Feature Sets
Images
Flash
DRAM
ENTERPRISE/APPN IPSEC 3DES
c2600-ajk2s-mz
8
32
ENTERPRISE/APPN PLUS
c2600-ajs-mz
8
32
ENTERPRISE/APPN PLUS IPSEC 56
c2600-ajs56i-mz
8
32
REMOTE ACCESS SERVER
c2600-c-mz
4
20
IP/IPX/AT/DEC
c2600-d-mz
8
20
IP/IPX/AT/DEC/FW PLUS
c2600-dos-mz
8
24
IP/IPX/AT/DEC PLUS
c2600-ds-mz
8
24
IP
c2600-i-mz
4
20
IP/FW IPSEC 3DES
c2600-ik2os-mz
8
24
IP IPSEC 3DES
c2600-ik2s-mz
8
24
IP/FW
c2600-io-mz
4
20
IP/FW PLUS IPSEC 56
c2600-ios56i-mz
8
24
IP PLUS
c2600-is-mz
8
24
IP PLUS 40
c2600-is40-mz
8
24
IP PLUS IPSEC 56
c2600-is56i-mz
8
24
ENTERPRISE/FW 3DES
c2600-jk2os-mz
8
32
ENTERPRISE 3DES
c2600-jk2s-mz
8
32
ENTERPRISE/FW PLUS IPSEC 56
c2600-jos56i-mz
8
32
ENTERPRISE PLUS
c2600-js-mz
8
32
ENTERPRISE PLUS IPSEC 56
c2600-js56i-mz
8
32 Find me at
"Take advantage of the enemy's unreadiness, make your way by unexpected routes, and attack unguarded spots."
Sun Tzu
- Status
Similar threads
- Locked
- Question