Layer 2 Switching Features - Nortel 2350 Installation And Basic Configuration Manual

32 WLAN—Security Switch Overview

Layer 2 Switching Features

• Spanning Tree Protocol (STP)—WSS Software supports Per-VLAN Spanning Tree (PVST+). PVST+ allows a
separate spanning tree in each virtual LAN (VLAN). Optional fast convergence features allow you to quickly
resume traffic forwarding after a topology change.
• Load-sharing port groups—You can configure multiple physical ports into a single logical link for traffic load
sharing and physical link redundancy.
• Virtual LANs (VLANs)—WSS Software supports logical segmentation of a switch's ports into separate Layer 2
collision domains. A port can be a member of one or more VLANs. Each VLAN can have its own IP interface.
WSS Software supports the 802.1Q tag format.
• Internet Group Management Protocol (IGMP) snooping for multicast containment—The WSS can learn about the
multicast sources and receivers in the network and restrict forwarding for a multicast group to the users for that
group. IGMPv1 and IGMPv2 are supported.
320656-A