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Posts Tagged ‘upgrade’

Upgrading IOS on a Cisco 6500 with a single SUP720

posted in Cisco Networking
by on January 7th, 2013 tags: , ,

Upgrading IOS on a Cisco 6500 isn’t necessarily as simple as loading an IOS image and rebooting the switch.  There are several other items that should also be considered such as modules, firmware, and field programmable devices.  The firmware is the low level operating system beneath IOS that controls how the various components work and interact.

These are some items that might need to be upgraded in addition to the IOS:

Each of the above have their own firmware naming conventions and it can be difficult to find these files. Try to Google partial file names to locate the correct images on the Cisco site. Here are some tips for finding firmware:

  1. The CEF720 line card firmware starts with c2lc-rm2. As of this writing, 12.2(18r)S1 is the current version and the current file name is c2lc-rm2.srec.122-18r-S1
  2. The SUP720 firmware starts with c6ksup720. As of this writing, 8.5(4) is the current version and the current file name is c6ksup720-rm2-srec.8-5-4.srec.
  3. The MSFC3 firmware starts with c6msfc, as of this writing 12.2(17r)SX7 is the current version and the current file name is c6msfc3-rm2-srec.122-17r.SX7.
  4. The field programmable device firmware starts with c6500-fpd-pkg. As of this writing, 12.2(33)SXJ3 is the current version and the current file name is c6500-fpd-pkg.122-33.SXJ3.pkg
  5. The IOS images for the 6500 series SUP720 firmware starts with s72033. As of this writing, 12.2(33)SXJ3 is the current version and the current file name is s72033-ipbase-mz.122-33.SXJ3, depending on your IOS license version

Field programmable devices start with SIP or SPA as part of the module name. You can verify if your chassis has a field programmable device by issuing the following command in the CLI:

show hw-module all fpd

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Upgrading with ISSU

posted in Cisco Networking
by on May 14th, 2012 tags: , , ,

I recently had to upgrade the IOS on a Cisco 4500.  I figured it was the perfect opportunity to try out ISSU and to blog about it.

ISSU (In-Service Software Upgrade) is a feature that allows the operator to upgrade (or downgrade) the IOS on device without having to take the entire device down and potentially impact service. This is partly accomplished with the SSO supervisor redundancy mode that performs the subsecond supervisor switchovers while each supervisor is restarted and loaded with the new (or old) IOS.

In brief, the process works as follows: Both supervisors are running the old image. The standby supervisor is restarted and loaded with the new image. The operator switches over to the standby supervisor to ‘test drive’ the new image. The switchover automatically restarts the active supervisor, bringing it up as the standby and making the current standby supervisor the active.  Finally, the standby supervisor, which started as the active, is restarted and loaded with the new image. In the end, both supervisors have the new image.

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