Comments on: Maximum Number of Insertions for GBICs http://etherealmind.com/maximum-number-insertion-gbis/ Network design, architecture, thinking, working. Tech. Fri, 10 Feb 2012 18:43:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Network Dictionary – Mating Cycles http://etherealmind.com/maximum-number-insertion-gbis/#comment-2349 Network Dictionary – Mating Cycles Tue, 22 Mar 2011 13:28:08 +0000 http://etherealmind.com/maximum-number-insertion-gbis/#comment-2349 [...] this also links with the Maximum Number of Insertions for GBICs art≠icle I†wrote a†while back. Share this:ShareEmailStumbleUponRedditFacebookPrint Filed Under: [...] [...] this also links with the Maximum Number of Insertions for GBICs art≠icle I†wrote a†while back. Share this:ShareEmailStumbleUponRedditFacebookPrint Filed Under: [...]

]]> By: Justin Wilson http://etherealmind.com/maximum-number-insertion-gbis/#comment-2348 Justin Wilson Tue, 13 Jul 2010 17:21:26 +0000 http://etherealmind.com/maximum-number-insertion-gbis/#comment-2348 Great article. re-blogged it to mine. Great article. re-blogged it to mine.

]]> By: paul http://etherealmind.com/maximum-number-insertion-gbis/#comment-2347 paul Mon, 12 Jul 2010 21:32:13 +0000 http://etherealmind.com/maximum-number-insertion-gbis/#comment-2347 Hey Mike, that is interesting. I was not aware it was a known issue. In this case it was a 470. But I am sure allot of the switch bits and pieces are mostly the same Hey Mike, that is interesting. I was not aware it was a known issue. In this case it was a 470. But I am sure allot of the switch bits and pieces are mostly the same

]]> By: Michael McNamara http://etherealmind.com/maximum-number-insertion-gbis/#comment-2346 Michael McNamara Mon, 12 Jul 2010 21:02:01 +0000 http://etherealmind.com/maximum-number-insertion-gbis/#comment-2346 Hi Paul, There was/is an known issue with some of the Nortel/Avaya 5000 series stackable switches that was only recently resolved where the NVRAM/FLASH would experience a failure due a high number of configuration writes when MAC security was enabled in the configuration. I made a post about it on my <a href="http://blog.michaelfmcnamara.com/2010/03/ethernet-routing-switch-5500-nvram-flash-memory-wear/" rel="nofollow">blog</a>. Cheers! Hi Paul,

There was/is an known issue with some of the Nortel/Avaya 5000 series stackable switches that was only recently resolved where the NVRAM/FLASH would experience a failure due a high number of configuration writes when MAC security was enabled in the configuration.

I made a post about it on my blog.

Cheers!

]]> By: Paul http://etherealmind.com/maximum-number-insertion-gbis/#comment-2345 Paul Mon, 12 Jul 2010 16:17:01 +0000 http://etherealmind.com/maximum-number-insertion-gbis/#comment-2345 Greg. on a similar note. someone in my organization was testing a SW/FW upgrade procedure on a nortel switch. After his testing was complete this person reported back to me that the upgrade procedure was flawed and the upgrade process corrupted the switch and left it inoperable. I placed some calls at Nortel before opening a ticket. I later found that this person was performing extensive testing. Extreme stress testing if you ask me. He upgraded the SW and FW 30 times in a row on the same switch. Each time, initializing the config, and downgrading the switch to a lower version before starting again. After a small laugh, Nortel replaced the switch. But with the kind reminder that most switches will have only 5 major and 10 minor releases during the life of the switch. The NVram was never tested to be writen to over 60+ times. everything has a breaking point. Greg.

on a similar note.

someone in my organization was testing a SW/FW upgrade procedure on a nortel switch. After his testing was complete this person reported back to me that the upgrade procedure was flawed and the upgrade process corrupted the switch and left it inoperable.

I placed some calls at Nortel before opening a ticket.

I later found that this person was performing extensive testing. Extreme stress testing if you ask me. He upgraded the SW and FW 30 times in a row on the same switch. Each time, initializing the config, and downgrading the switch to a lower version before starting again.

After a small laugh, Nortel replaced the switch. But with the kind reminder that most switches will have only 5 major and 10 minor releases during the life of the switch. The NVram was never tested to be writen to over 60+ times.

everything has a breaking point.

]]> By: links for 2010-07-11 : Bob Plankers, The Lone Sysadmin http://etherealmind.com/maximum-number-insertion-gbis/#comment-2344 links for 2010-07-11 : Bob Plankers, The Lone Sysadmin Sun, 11 Jul 2010 19:01:06 +0000 http://etherealmind.com/maximum-number-insertion-gbis/#comment-2344 [...] Maximum Number of Insertions for a GBICs | My Etherealmind I was not aware that GBICs are not designed for a large number of insertions/removals, aka "mating cycles." Though it makes sense, the average GBIC in my environment sees 1 mating cycle in its life. [...] [...] Maximum Number of Insertions for a GBICs | My Etherealmind I was not aware that GBICs are not designed for a large number of insertions/removals, aka "mating cycles." Though it makes sense, the average GBIC in my environment sees 1 mating cycle in its life. [...]

]]> By: Daniel http://etherealmind.com/maximum-number-insertion-gbis/#comment-2343 Daniel Sun, 11 Jul 2010 11:28:46 +0000 http://etherealmind.com/maximum-number-insertion-gbis/#comment-2343 This issue is not helped by the often poor manufacturing quality of the SFP ports on Cisco switches (the holes are often mis-sized or just plain wonky). The GLC-T is also incredibly easy to break if installed/removed incorrectly. This issue is not helped by the often poor manufacturing quality of the SFP ports on Cisco switches (the holes are often mis-sized or just plain wonky).

The GLC-T is also incredibly easy to break if installed/removed incorrectly.

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