· VLANs are local to each switch's database, and VLAN information is not passed between switches.
· Trunk links provide VLAN identification for frames traveling between switches.
· Cisco switches have two Ethernet trunking mechanisms: ISL and IEEE 802.1Q.
· Certain types of switches can negotiate trunk links.
· Trunks carry traffic from all VLANs to and from the switch by default but can be configured to carry only specified VLAN traffic.
· Trunk links must be configured to allow trunking on each end of the link.
0 comments:
Post a Comment