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Most command trunking protocols are:
->ISL
->IEEE 802.1Q

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Posted by akumar_8181

Protoocls used for trunking on a switch are
1) IEEE 802.1Q Trunking (IEEE Defined)
2) ISL (Inter Switch Link ) Cisco Properitery

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Posted by sizzlingfauji

www.informit.com/library/content.aspx?b...Switching

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Posted by crouse

www.computerfreetips.com/.../EtherChannel-PAgP-Protocol.html

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Posted by crouse