Cisco 3550 with G5483 1000BaseT Gbic

[TheFOSho]

On my 3550 the GBIC LED will not light. The switch is brand new GBIG is brand new. What do I need to do to initialize the GBIC?????

 

[jpm121]

is it shutdown in the config?

 

[TheFOSho]

No it is not shutdown!!

 

[tiremd]

Is it physically connected to something using that GBIC port....something of the same style (SX, LX, etc)?? Led is just a link LED I think.

 

[BuckWeet]

yea it has to have a link to a remote switch/nic that runs gigabit itself...

 

[TheFOSho]

How about another GBIC on another switch? What kind of config should I put on the GBIC interface? Some syntax would help.

Thanks Folks!!!

 

[tiremd]

You shouldn't need to do any config to get basic connectivity, both sides should come up (light LED) as long as both sides are working and cabled properly.

Do a show interface on both sides to see what's up... and show config to make sure nothing odd is in there..

 

[TheFOSho]

Cool! So should the GBIC to GBIC idea work?

 

[tiremd]

Definitely should work

 

[TheFOSho]

Okay I tried GBIC to GBIC still no link. Just to paint a picture I have Two Cisco 3550 with GBIC's in the 1st Gigabit port. The two GBICS are connected via twisted pair cat 5. Yet they still are both down, both lines down.

 

[tiremd]

It should work.. I'm not familiar with the 5483's, is twisted cat5 the appropriate cable for them? I'm assuming you tried GBIC slot 2 on the 3550's also...

 

[TheFOSho]

Yeah twisted pair is correct. Its a copper GBIC with RJ45 port. I also tried port 2 and same result.

 

[tiremd]

I know you said its all brand new, but sounds to me like you might have a bad GBIC, or maybe cable...do you have others to try?

 

[TheFOSho]

I've tried several cables. I even made new cables. Still no link.

 

[TheFOSho]

interface GigabitEthernet0/1
no switchport
bandwidth 1000
ip address 192.68.10.145 255.255.255.0
ip access-group 2 out
flowcontrol receive on
flowcontrol send on

My Gbic config info...Wha am I missing

 

[tiremd]

I'm not sure what you are missing.

As a test...if you can, why not erase (or save to a server) the configs on both switches (clear config all?) and then reboot and plug together the gbics with no config..... they should link with no config supplied.

 

[TheFOSho]

How do I clear the config files? I tried the clear config all.....its not an option.

 

[tiremd]

On 3550's I think its:

erase nvram: or the erase startup-config command

try that....

 

[TheFOSho]

I SCREWED UP and did an erase all!!! Is there anyway i can reload this thing?????

 

[baddos]

I think you are using a straight through cable. On a switch to switch setup, you will need a cross-over cable.