Port Configuration
Overview: Port Trunking
Matrix E1 Series (1G694-13) Configuration Guide 4-29
4.2.9 Overview: Port Trunking
Port trunks can be used to increase the bandwidth of a network connection and to ensure fault
recovery. The Matrix 1G694-13 allows you to configure up to six trunks (of two ports per trunk)
on the device. It also allows you to configure all 12 Gigabit Ethernet ports into an aggregate
connection. Besides balancing the load across each port in the trunk, the additional ports provide
redundancy by taking over the load if another port in the trunk should fail. However, before
making any physical connections between devices, use the set trunk command to specify the
trunk on the devices at both ends. When using a port trunk, note that:
• Ports can only be assigned to one trunk.
• 10-Gigabit ports cannot be part of a trunk.
• The ports at both ends of a connection must be enabled and configured as trunk ports.
• The ports at both ends of a trunk must be configured in an identical manner, including speed,
duplex mode, and VLAN assignments.
• None of the ports in a trunk can be configured as a mirror source port or mirror target port.
• All the ports in a trunk have to be treated as a whole when moved from/to, added or deleted from
a VLAN.
• The Spanning Tree Algorithm will treat all the ports in a trunk as a whole.
• Before removing a port trunk via CLI commands, you must remove all network cables.
Otherwise, a loop may be created.
• To disable a single link within a port trunk, you should first remove the network cable, and then
disable both ends of the link. This allows the traffic passing across that link to be automatically
distributed to the other links in that trunk, without losing any significant amount of traffic.
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