I was asked to remove GigabitStack (Gbic) modules from the these switches and installed gigabit ethernet modules and we wanted to link them to the cisco 3750 which is the core switch which will also be clustered when the second switch is installed i.e. another cisco 3750.
Currently I cannot even get the modules to work with the cisco 3750 the links dont come up.
I have attached soem diagrams adn configs with this post if anyone can help will be greatly apprecaited.
If I need to run some debugging specific to any of the switches or upgrade IOS please feel free to let me know.
The other 3550 work absolutely fine with the cisco 3750.
I have also tried to swap the modules from teh working 3550 to non working 3524 and it still does not work.
all desktops (3550s) are using different IOS versions and capabilities.
desktop1 is using PVST and has no ip default gateway.
desktop2 has no g0/1 switchport mode defined.
desktop3 has no g0/1 switchport trunk mode defined although it does have dot1q encapsulation defined.
desktop4 is using RAPID-
PVST and has no ip default route defined.
desktop5 has no trunks defined.
3750 switch is using PVST, has no trunks defined and has no ip default route.
the ip default route should not be a factor, i just wanted to mention that some devices have it, some dont.
the spanningTree configuration should be similar across platforms. not PVST on one and RPVST on another, etc.
since you have such a broad range of IOS versions, minor Revs and capabilities, you may want to do what you can to get these all up to the same capabilities at least; better yet, the same version for all.
it may be wise to check your GBICs as well for faulty operation. (i've seen these go bad on a whim with just an removal/insert)
i cannot tell from your diagram which ports the desktops use to plug into the 3750 with and which ports in the 3750 they plug into. this will be important for troubleshooting so we know if you have a trunked port plugged into a non trunked port, etc.
please provide which ports the 3550s use to plug into which ports on the 3750; this will help us understand if any port configs are mismatching.
Wow that made a lot more sense and I am still letting it sink in.
For further updates on the earlier post is:
work absolutely fine with no issues at all....
To eliminate the modules if they were faulty we repalced those with the above mentioend switches even if I repalce the modules with the 2 * 3524 which dont work the modules work fine in desktop 1 + desktop2 so that eliminates the modules for certain.
As for the IOS is concerned do you think we must first upgrade them to a specific IOS if yes = which IOS would you recommend....
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