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ISL & 802.1Q Configuratoin

skokieparkdistrict
Level 1
Level 1

‎09-18-2007 06:47 AM - edited ‎03-05-2019 06:33 PM

All of our switches in our network are Cisco ISL Trunks. I recently purchased a WS-C2960-8TC switch and just realized it only supports DOT1q.

This trunk port connects to a 3508G, which has other ISL trunks to other facilities/switches on separate VLANS.

My question is, if I configure this single link as 802.1q and the rest remain ISL, will traffic get forwarded? Ideally, I would like to stay consistant and perhaps change the entire network to 802.1q, but right now, that is not an option.

Thanks.

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Kevin Dorrell
Level 10
Level 10

‎09-18-2007 07:06 AM

There should be no problem using ISL one one trunk and dot1q on another. The encapsulation protocol is significant only on each individual link.

Kevin Dorrell

Luxembourg

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