Network technologies and trends

Oct 4 2008   12:21PM GMT

Things to be considered before upgrading an IOS in a Cisco 6500 Series Switch with SUP720- Series 2

Yasir Irfan Yasir Irfan Profile: Yasir Irfan

In the first series I was talking about the TFTP severs, now let’s proceed further, one more key thing you must consider before starting an IOS upgrade for a Cisco Catalyst 6513 Switch with Supervisor Engine SUP720 is the Compact flash memory. The Supervisor Engine SUP720 comes with two slots for memory. Recommended part number


Cat6500 Sup720 Compact Flash Mem 256MB

The Compact flash memory is required in order to avoid any failure IOS file upload through TFTP server. As before uploading the file the current IOS file is deleted from the boot flash memory of the switch. Before starting the IOS upgrade in the  Cisco Catalyst 6513 Switch with Supervisor Engine SUP720 issue a boot command to boot from the flash memory if the Cisco Catalyst 6513 Switch with Supervisor Engine SUP720 fails to boot from the boot flash memory by issuing following command.bootflashNote:  the Compact flash memory is inserted in the slot 1 of the Supervisor Engine SUP720.

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