Switch 3900, and SuperStack II Switch 9300 devices differ from other 3Com devices. See the Device View online Help to resolve these differences.
For the CoreBuilder 9000 Switch, 3Com strongly recommends that you read the CoreBuilder 9000 Implementation Guide for information on VLANs and other features.
The kinds of VLAN you can implement are determined by VLAN support in the devices you manage. For modular hubs, the type of VLAN you can implement depends on the installed switching module. For more information, refer to the information provided with the device.
VLANs on the Your system offers a collection of interface modules that pass traffic to CoreBuilder 9000 one another using a central switch called the Gigabit Ethernet (GEN)
Switch Fabric Module. This switch fabric module, a 24-port Layer 2 switching module, controls the Ethernet traffic associated with its interface modules.The switch fabric module supports the following modules:
■Layer 2 switching modules — Perform Layer 2 functions. They handle bridging and support port-based VLANs only. Available Ethernet Layer 2 modules include the 10-port 100BASE-FX Fast Ethernet Layer 2 switching module, the 20-port 10/100BASE-TX Fast Ethernet Layer 2 Switching Module, and the 36-port 10/100BASE-TX Fast Ethernet Layer 2 Switching Module. These modules have two backplane ports; the lower-numbered backplane port is enabled and can be configured.
■Layer 3 switching modules — Perform Layer 3 as well as Layer 2 functions. They handle bridging and routing, and support port-based, protocol-based, and network-based VLANs. Available Ethernet Layer 3 modules include the 10-port 100BASE-FX Fast Ethernet Layer 3 switching module and the 12-port 10/100BASE-TX Fast Ethernet Layer 3 Switching Module. These modules have only one backplane port and typically reside in the higher-numbered chassis slots (slots 13 through 16) that have only one port connection to the switch fabric module.
■Gigabit Ethernet (GEN) Interface modules — These 2-port Gigabit Ethernet interface modules do not perform switching; they act as a traffic pipeline to the switch fabric module. Available GEN interface modules include the 2-port1000BASE-SX and 1000BASE-LX models. You do not configure the two Gigabit Ethernet ports of the GEN
