02-21-2011 04:49 PM - edited 03-06-2019 03:40 PM
Hello,
I have got a couple cisco 3500xl switches which I am attempting to connect via GBIC fibre connections. Once up and running I can insert the Gbics and their state goes to up. I have given the no shutdown command on the interfaces on both switches and copied the running configuration to the startup configuration. However, when I cold boot the switches the Gbic modules will not power on. The only way they will stay on is if I warm reload the switches. Any ideas?
Thanks a ton!!!
Sent from Cisco Technical Support iPhone App
02-21-2011 05:39 PM
Warm/Cold reboot a 3500XL? That's not possible because the 2900XL/3500XL doesn't support that command.
During the reboot/reload stage the GBICs will not work because the ASIC hasn't finished doing it's Power On Self Test. Once it's completed, the switch has to load the IOS, then the toaster, then the coffee, then the config. Y'know the drill.
02-21-2011 05:54 PM
By warm reboot I mean issue the reload command. By cold reboot I mean unplug the power and then power it back on. After post is complete the GBICs never come on until I unplug/plug them back in. I am trying to avoid having to do this if the power fails and battery backup runs out of battery...which is unlikely in the first place but these switches are going to be on the top of a mountain only accessible by helicopter...so I'd like to get it right. Lol
Thanks again
Sent from Cisco Technical Support iPhone App
02-21-2011 06:01 PM
After post is complete the GBICs never come on until I unplug/plug them back in.
Alright, now this I've never heard or seen before. I have experience in managing a fleet of 500 x 3500XL and this is new to me.
1. What IOS are you running?
2. What exact model of your GBIC?
02-21-2011 06:04 PM
these switches are going to be on the top of a mountain only accessible by helicopter
Whaaaa????
How can I ask you to reconsider your choice switch? Please don't use the 3500XL. 3500XL is a ten (or more) years old switch. It's very feature-poor switch and I hate to see these break down.
02-21-2011 06:11 PM
Oh I would love to change them out...I really would, but as a grunt I dont have the choice... My boss has decided to go with these switches
and there is no convincing of otherwise...he knows they are only 10/100 yet is connecting them via Gibic....beats me...anyways just trying to finish the task he has given me and unfortunately I am new to supporting cisco equipment.
IOS version is 12.0
GBIC'S are Finisar FTR-1519-62 1620nm Single Mode GBIC Transceiver
Thanks again for even looking at this mess
02-21-2011 06:15 PM
IOS version is 12.0
That's not complete. Can you be more specific? XU? WC1? etc.
GBIC'S are Finisar FTR-1519-62 1620nm Single Mode GBIC Transceiver
Remember what I said about "I've never seen this before"? This could be the issue. Can you verify that these are Cisco branded GBIC and made by Finnisar or are they plain-and-simple Finnisar GBIC?
If the GBICs are indeed Finnisar branded, then try using a Cisco branded ones. The 3500XL will accept a majority of non-Cisco branded GBIC at a cost of "compatibility" issues like what you are looking now.
Thanks again for even looking at this mess
Don't worry. I enjoy puzzles like these.
My boss has decided to go with these switches and there is no convincing of otherwise
I hope your Frequent Flyer card is up-to-date because you'll be up there more than you imagine. Don't forget to bring picnic baskets too!
PS: I hope you're not afraid of flying or heights.
02-21-2011 06:22 PM
As for the IOS I'll have to check the full version tomorrow at work. They are indeed finisar not branded cisco
He has decided to "save money" up front and cost more in the end I suppose.
Sent from Cisco Technical Support iPhone App
02-21-2011 06:56 PM
They are indeed finisar not branded cisco
Ok then that could be the issue. I'm not sure if upgrading the IOS could help because I've never used a non-Cisco part on a Cisco appliance. Change the GBIC and see the difference. Besides, GBIC nowadays are a-dime-a-dozen. Anyone can get a Cisco-branded GBIC from e-Bay.
He has decided to "save money" up front and cost more in the end I suppose.
I've got a good joke for this but I'm not going down that slippery slope.02-21-2011 07:01 PM
02-21-2011 07:21 PM
That's incredible.
Sent from Cisco Technical Support iPhone App
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide