Chapter 4
| Interface Configuration
Trunk Configuration
– 139 –
Command Usage
Besides balancing the load across each port in the trunk, the other ports provide
redundancy by taking over the load if a port in the trunk fails. However, before
making any physical connections between devices, use the web interface or CLI to
specify the trunk on the devices at both ends. When using a trunk, take note of the
following points:
â—† Finish configuring trunks before you connect the corresponding network
cables between switches to avoid creating a loop.
â—† You can create up to 16 trunks on a switch or 32 trunks in the stack, with up to
eight ports per trunk.
â—† The ports at both ends of a connection must be configured as trunk ports.
â—† When configuring static trunks on switches of different types, they must be
compatible with the Cisco EtherChannel standard.
â—† The ports at both ends of 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.
â—† Any of the Gigabit ports on the front panel can be trunked together, including
ports of different media types.
â—† All the ports in a trunk have to be treated as a whole when moved from/to,
added or deleted from a VLAN.
â—† STP, VLAN, and IGMP settings can only be made for the entire trunk.
Configuring a
Static Trunk
Use the Interface > Trunk > Static page to create a trunk, assign member ports, and
configure the connection parameters.
Figure 47: Configuring Static Trunks
active
links
}
statically
configured
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