VLAN Trunking Configuration
Lesson 6: Configuring Trunks
Trunking configuration between two Cisco switches can be very simple if you just statically configure trunking. For example, if two Cisco 2960 switches connect to each other, they support only 802.1Q and not ISL. You could literally add one interface subcommand for the switch interface on each side of the link (switchport mode trunk), and you would create a VLAN trunk that supported all the VLANs known to each switch.
However, trunking configuration on Cisco switches includes many more options, including several options for dynamically negotiating various trunking settings. The configuration ...
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