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3-167
• All ports in a trunk must be configured in an identical manner,
including communication mode (i.e., speed, duplex mode and flow
control), VLAN assignments, and CoS settings.
• All the ports in a trunk have to be treated as a whole when moved
from/to, added or deleted from a VLAN via the specified
port-channel.
• STP, VLAN, and IGMP settings can only be made for the entire trunk
via the specified port-channel.
channel-group
Use this command to add a port to a trunk. Use the no form to remove a
port from a trunk.
Syntax
channel-group channel-id
no channel-group
channel-id - Trunk index (Range: 1-6)
Default Setting
A new trunk contains no ports.
Command Mode
Interface Configuration (Ethernet)
Command Usage
• When configuring static trunks, the switches must comply with the
Cisco EtherChannel standard.
•Use no channel-group to remove a port group from a trunk.
•Use no interfaces port-channel to remove a trunk from the switch.
• The maximum number of ports that can be combined as a static trunk
is four 10/100 Mbps ports, and two 1000 Mbps ports.
• All links in a trunk must operate at the same data rate and duplex mode.