BayStack 450 10/100/1000 Series Switches
Before Configuring Trunks
When you create and enable a trunk, the trunk members (switch ports) take on certain settings necessary for correct operation of the MultiLink Trunking feature.
Before configuring your MultiLink Trunk, you must consider these settings, along with specific configuration rules, as follows:
1.Read the configuration rules provided in the next section, “ MultiLink Trunking Configuration Rules.”
2.Determine which switch ports (up to four) are to become trunk members (the specific ports making up the trunk):
•A minimum of two ports are required for each trunk.
•Ensure that the chosen switch ports are set to Enabled, using either the Port Configuration screen (see “Port Configuration” on page
•Trunk member ports must have the same VLAN configuration.
3.All network cabling should be complete and stable before configuring any trunks, to avoid configuration errors.
4.Consider how the existing spanning tree will react to the new trunk configuration (see “ Spanning Tree Considerations for MultiLink Trunks” on page
5.Consider how existing VLANs will be affected by the addition of a trunk.
6.After completing the above steps, see “MultiLink Trunk Configuration” on page
MultiLink Trunking Configuration Rules
The MultiLink Trunking feature is deterministic; that is, it operates according to specific configuration rules. When creating trunks, consider the following rules that determine how the MultiLink Trunk reacts in any network topology:
•Any port that participates in MultiLink Trunking must be an active port (set to Enabled via the Port Configuration screen or through network management).
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