Q: What are the differences between DOT1Q and ISL?
Highlight after < for the answer.
A: < 1. Dot1q is IEEE standard, ISL is Cisco-proprietary. 2. Dot1q has the concept of a Native VLAN which doesn't tag the native vlan, ISL does not, it encapsulates all frames. 3. Dot1q tags the frame, ISL encapsulates it.
For more information on this visit this page:
http://www.thebryantadvantage.com/CCNACertificationExamWhySwitchesTrunkAndHow.htm
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