Command Line Interface
7571553-KDU 137 365 Uen D 2006-06-16
Guidelines for Creating Trunks
General Guidelines –
• Finish configuring port trunks before connecting the corresponding
network cables between switches to avoid creating a loop.
• A trunk can have up to eight ports.
• The ports at both ends of a connection must be configured as trunk
ports.
• All ports in a trunk must be configured in an identical manner, including
communication mode (that is, speed, duplex mode and flow control),
VLAN assignments, and CoS settings.
• Any of the Gigabit ports on the front panel can be trunked together,
including ports of different media types.
• All the ports in a trunk have to be treated as a whole when moved from/
to, added or deleted from a VLAN through the specified port-channel.
• STP, VLAN, and IGMP settings can only be made for the entire trunk
through the specified port-channel.
Dynamically Creating a Port Channel –
• Ports assigned to a common port channel must meet the following
criteria:
• Ports must have the same LACP system priority.
• Ports must have the same port admin key (Ethernet Interface).
Trunk Status Display Command
show interfaces
status
port-channel
Shows trunk information NE, PE 749
show lacp Shows LACP information PE 766
Command Function Mode Page
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