ISL Support

Unanswered Question
May 13th, 2007
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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 Sun, 05/13/2007 - 08:17
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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 Sun, 05/13/2007 - 11:59
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Dear,


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



Best Regards,

Mounir Mohamed

mohammedmahmoud Sun, 05/13/2007 - 10:12
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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 Sun, 05/13/2007 - 10:24
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Thanks for the info. That makes sense now. It is still in use, but not being supported.


Thanks


Stephen

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