ISL Support

stephen.stack · ‎05-13-2007

Hi Experts,

Just going through my new CCNp switching book, and i see a tip that says that support for ISL has ceased accross all Cisco Catalyst platforms.

Would anyone like to confirm this?

Regards

Stephen

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mounir.mohamed · ‎05-13-2007

Dear,

Cisco proprietary protocol, and not supported by the 2940 or 2950 series switches, but it's supported on 2924-XL, 2912-XL utilizing 11.(8)SA4 (Enterprise Edition, BUT as far i know now Cisco stop supporting ISL on new IOS relases and new Cisco products also, so i beleive this is reason behind the word you found (Cisco ceased ISL across all devices)

Best Regards,

Mounir Mohamed

mounir.mohamed · ‎05-13-2007

Dear,

You welcome :) would you mark the Conversation as solved if your problem had been solved.

Best Regards,

Mounir Mohamed

mohammedmahmoud · ‎05-13-2007

Hi,

Check this link for ISL support on Cisco switches:

http://www.cisco.com/en/US/tech/tk389/tk390/technologies_tech_note09186a008017f86a.shtml#topic1

For more information about ISL:

http://www.cisco.com/en/US/tech/tk389/tk390/technologies_tech_note09186a0080094665.shtml

As far as i can say ISL is still available on cisco switches, but it is no more developed.

HTH, please do rate all helpful replies,

Mohammed Mahmoud.

stephen.stack · ‎05-13-2007

Thanks for the info. That makes sense now. It is still in use, but not being supported.

Thanks

Stephen

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