I believe that I came across this problem in the past while creating an ISL trunk on a 6509.  Verify that spantree portfast is disabled on the gigabit ports.

 

Kenneth Rolle

Network Engineer

E! Entertainment Television

 

 

-----Original Message-----
From: whitaker [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, October 24, 2000 10:38 AM
To: [EMAIL PROTECTED]
Subject: isl trunk on 6509

 

I  was trying to set up an ISL trunk on my gigabit fiber link, but it responded that it was only able to run in nonegotiate mode.  Since this is going between two 6509s gigabit fiber link, I was never able to exchange VTP information between the two in nonegotiate mode, and it wouldn't let me switch it to anything else.  I now have a trunk running across one of the 10/100 switch module ports.

 

Is this a limitation of the gigabit fiber links?  Or is there something I'm missing here?

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