Chapter 2 Network configuration 85Using the BayStack 420 10/100/1000 SwitchAdditional tips about the MultiLink Trunking featureWhen you create a MultiLink Trunk, the individual trunk members (the specificports that make up the trunk) logically connect and react as a single entity. Forexample, if you change spanning tree parameters for any trunk member, thespanning tree parameters for all trunk members change.All configured trunks are indicated in the Spanning Tree Configuration screen.The Trunk field lists the active trunks, adjacent to the port numbers thatcorrespond to the specific trunk member for that trunk.When a trunk is active, you can disable spanning tree participation using theTrunk Configuration screen or using the Spanning Tree Configuration screen.When a trunk is not active, the spanning tree participation setting in the TrunkConfiguration screen does not take effect until you set the Trunk Status field toEnabled.The trunk is also viewed by management stations as a single spanning tree port.The spanning tree port is represented by the trunk member with the lowest portnumber. For example, if ports 13, 14, 15, and 16 are trunk members of trunk T1,the management station views trunk T1 as spanning tree port 13.For more information about using the MultiLink Trunking feature, see “MultiLinkTrunk Configuration Menu screen” on page 133.See also Appendix C, “Quick configuration for MultiLink Trunking,” on page 193for a configuration flowchart that can help you use this feature.Port mirroringYou can designate one of your switch ports to monitor ingress traffic on a singlespecified switch port (port-based).Note: A probe device, such as Nortel Networks StackProbe, must beconnected to the designated monitor port to use this feature (contact yourNortel Networks sales agent for details about the StackProbe).
