Hi seniors,,
While studying CCNA, the following question about trunking is in my mind but not clear,,,
--> Can we define two interfaces as a trunk ?
e.g
in a lab there are 3 switches , sw1. sw2. sw3. Only sw1 is in
distribution layer while sw2 and sw3 are in access layer. Two
interfaces are connected on sw1 , one for sw2 and one for sw3. sw2 and
sw3 are not connectes with eachother. sw1 is in server mode while other
two are in client mode. Can we define two interfaces as a trunk on sw1 ?
Thanks in advance.
Tahir.
Yes you can as the defination of trunk port/llinks says are required to pass VLAN information between switches. A port on a Cisco switch is either an access port or a trunk port. Access ports belong to a single VLAN and do not provide any identifying marks on the frames that are passed between switches. A trunk port is by default a member of all the VLANs that exist on the switch and carry traffic for all those VLANs between the switches.
To distinguish between the traffic flows, a trunk port must mark the frames with special tags as they pass between the switches. Trunking is a function that must be enabled on both sides of a link. If two switches are connected together,they must both be configured with the same tagging mechanism (ISL or 802.1Q).
