tagging ports on cisco switch

5 pts.
Tags:
Cisco
Networking Equipment
Switches
I have configured a 3750 switch to communicate to a 3550 switch and I set up vlans and I trunked the uplink ports. I am told that I should configure the ports for tagging, I am not sure what the tagging will do for me and if it is really needed. Please explain tagging. tks in advance Msflex1

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MSflex1, You have multiple switches. You trunked the switches. You defined the trunk to be an 802.1q trunk. The 802.1q is the encapsulation type for the trunk. You will assign vlans to the trunk. The trunk will flow the vlans from switch1 to switch2. When a topology change occurs, a VTP update will keep both switches in sync. What vlan tagging will do for you is that frame that is transmitted over the trunk is “tagged” with a vlan number.

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