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Webcast-Catalyst9k
New Member

Inter Switch Link

I use Switch Catalyst 2924 Xl as Switch Commander and Cat 2912 as member switch. Some of my iMac and G3 are hookup to the Cat 2924Xl and work very well, I can see the my IPShare Server and the other computer on the network but when I move some imac (Flower Power, iMac 333Mhz) to Cat 2912 (switch member) and I can not see anything in the chooser (just blank) but the Green Led (light) on port cat 2912 is green blinking it mean the link is working fine, my question, what I should do ? or there is something I have to setup ? I did enable SPanning Tree and fast port enable in both of the switch. What is the ISL ?

Please ....

4 REPLIES
Cisco Employee

Re: Inter Switch Link

ISL is Cisco proprietary trunk protocol. It stands for "Inter Switch Link".

http://www.cisco.com/warp/public/473/#Trunking

Is your network one flat network or do you use multiple VLANs?

New Member

Re: Inter Switch Link

Thanks for respon, my network is one flat network

Bronze

Re: Inter Switch Link

If all the ports is in the same vlan on both switches and there is no trunking between the link then everything should be same.

DO you only have problem with appletalk or ip is also not working.

New Member

Re: Inter Switch Link

May not may yes, because I try to replace another imac, same version everything same but work, and the previous imac I hook up to switch commander and work.

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