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VLAN Trunk Issue 3550 and older Catalyst Switches (3500XL & 2900XL)

I have no problem configuring a trunk link between a 3550 and 2950 switches, and propagating VTP information. However, when I attempt to configure a trunk link between a 3550 and a older 3500XL or 2900XL, I cannot bring the link up. I have checked the encapsulations, and set switchport mode trunk, and desireable, etc. Everything appeared to match, and should have worked. Has anyone else seen this issue? I am I missing something simple?

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: VLAN Trunk Issue 3550 and older Catalyst Switches (3500XL &

Not all XLs support ISL/dot1q trunking. Make sure you have the required software/memory

http://www.cisco.com/warp/public/473/50.shtml#notes

1 REPLY
Cisco Employee

Re: VLAN Trunk Issue 3550 and older Catalyst Switches (3500XL &

Not all XLs support ISL/dot1q trunking. Make sure you have the required software/memory

http://www.cisco.com/warp/public/473/50.shtml#notes

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