Leo Laohoois a network engineer. Leo specializes in wireless and LAN/WAN technologies. He previously worked with EDS (today HP) and SITA/Equant, he holds a Colleague Degree in Business Management and a CCNA.
On his free time, Leo enjoys participating in the Cisco Support Community, he states that it is a “TWO-way street”. He is one of the topCisco Designated VIPs and a member of the elite Cisco Support Community Hall of Fame program. The Cisco Support Community is a place where you can help someone else and at the same time learn from other people’s responses their responses to you answers.
You can download the slides of the presentation in PDF format here. The related Ask The Expert sessions is available here. The complete recording of this live Webcast can be accessed here.
IOS Upgrade on Catalyst Switches 2900, 3500 and 3700 - Easy as Pi
Q: How long does it take to upgrade the IOS of a switch?
A: There is no exact duration, the amount of time it'll take to upgrade a switch depends on many factors, such as platform, from which code are you upgrading, to which code are you upgrading, members in the stack (if applicable), etc. I would recommend to schedule a 30-40min MW per switch, however keep in mind it is just an average.
Q: Is there a way you can verify whether the new IOS in on top or below in the flash directory?
A: No, there is no command to sort the "sh flash" output
Q: After upgrade whats the recommended option when i put show version, intall mode or bundle mode?
A: Install mode is the recommended
Q: Can separate updated switches in a stack be rebooted one at a time and out of order and after all are up would the stack recover?
A: You can find the answer to this question on the Ask the Expert event.
Q: ftp vs tftp - what is preferred?
A: It depends, If you want speed, you can go for TFTP (UDP), if you are looking for reliability, then you should go for FTP (TCP)
Q: Do you need to modify a boot variable when using an archive download-sw ?
A: No, the boot variable will be modified automaticaly
Q: Can I have a boolean output on the md5 verify command? I want a boolean output on the successful md5 verify command to automate the process?
A: You can find the answer to this question on the Ask the Expertevent.
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