Router 7600 requires a down time to upgrade or down grade ios ?

sandeepchugh2010 · ‎01-24-2010

In service software upgrade must be supported and it should be possible to upgarade the router 7600 from one OS version to another without a downtime.

Regards

Sandeep Chugh

tarnhundal · ‎01-25-2010

Hi Sandeep,

You can only copy the IOS image but this will not effect untill you save this image and reload the router.

Thanx and regards,

Taran

Yasir Ashfaque · ‎01-26-2010

You can use ISSU, but make sure both IOS must be compatible with ISSU.

http://www.cisco.com/en/US/products/ps7149/prod_presentation_list.html

tarnhundal · ‎01-26-2010

HI Yasir,

Is it possible to do ISSU on 7600 ?

thanx and regards,

Taran

tarnhundal · ‎01-26-2010

Hi ,

How it wll be done on 7613 , means first I have to copy IOS on first SUP then on second . plz let me know ?

thanx and regards,

Taran

Yasir Ashfaque · ‎01-26-2010

Well it supports, please go through the link i have already given you, you will have to copy both new and old IOS on the flash of both active, backup supervisors, and then will have to follow the exact procecure shown in the guides. it works and you face minimum of 10 Seconds downtime.

Leo Laohoo · ‎01-26-2010

Info on Cisco Warm Reload & Warm Upgrades
http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6550/prod_presentation0900aecd8017a1a5.pdf

Warm Upgrade
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t11/feature/guide/gtwarmup.html

Warm Reload
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gtwrmrbt.html

Edison Ortiz · ‎01-26-2010

ISSU and eFSU are supported under 7600, however there are some caveats so I recommend reading the documentation on this subject:

http://www.cisco.com/en/US/docs/routers/7600/ios/12.2SR/configuration/guide/efsuovrw.html