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Community Member

WS-C3750-48TS-S connection to 2 core switches....

Hi

I’m trying to get a WS-C3750-48TS-S (Version 12.2(35)SE5) to connect to two different core switches which run HSRP between them (4006, 4506)
Right now
interface GigabitEthernet1/0/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-4,1005-4094
switchport mode trunk

on the WS-C3750-48TS-S is connected to the 4006 (Version NmpSW: 6.3(5))  on 4/3 (Module 4 is a WS-X4306-GB). This is working fine.
#module 4 : 6-port 1000BaseX Ethernet
set udld enable 4/2,4/5
set trunk 4/1  on dot1q 1-1005
set trunk 4/2  on dot1q 1-1005

I can’t seem to get
interface GigabitEthernet1/0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-4,1005-4094
switchport mode trunk

again on the WS-C3750-48TS-S to connect to the 4506 (Version 12.2(31)SGA8). Right now it is connected to 5-2 on the 4506 and this module is again a WS-X4306-GB. 5-2 is configured
interface GigabitEthernet5/2 – No link
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-4,1005-4094
switchport mode trunk
and I’ve tried
interface GigabitEthernet5/2 – No link
switchport trunk encapsulation dot1q
switchport mode trunk


I'm a little over my head here... I've tried different gbic, fiber patch cables... etc... Right now I'm really thinking it is a configuration issue. Any tips?

THANK YOU

3 REPLIES
Super Bronze

Re: WS-C3750-48TS-S connection to 2 core switches....

Hi

If your interface isn't up, it's likely a fibre/sfp issue.

Have you tried reversing the fibre pair?

Aaron

Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!
Community Member

Re: WS-C3750-48TS-S connection to 2 core switches....

I have tried different g-bics on the core side but not a differnet sfp...

I'll try that now. I did try switching the fiber pair.

aaronharrison

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03/31/2010 01:57 cc

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Please respond to message: "WS-C3750-48TS-S

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A new message was posted in the Discussion thread "WS-C3750-48TS-S

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Community Member

Re: WS-C3750-48TS-S connection to 2 core switches....

Different sfp still doesn't link up....

aaronharrison

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m> PAUL DICKINSON

03/31/2010 01:57 cc

PM

Subject

New

Please respond to message: "WS-C3750-48TS-S

"cisco-support@sg connection to 2 core switches...."

aur.hosted.jiveso

ftware.com"

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ftware.com>

paul.dickinson@fandpmfg.com,

A new message was posted in the Discussion thread "WS-C3750-48TS-S

connection to 2 core switches....":

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