Features - 3Com corebuilder 3500 Implementation Manual

Your system supports several features that are closely related to the

Features

bridging process and are therefore categorized under
system interface.
The following bridging topics are covered in this chapter:
Spanning Tree Protocol (STP) — You can configure bridge-wide and
bridge port settings to calculate a network topology that reflects a
single, loop-free path between any two devices.
Multicast and broadcast limits — You can assign per-port multicast
threshold values to limit the per-second forwarding rate of incoming
broadcast and multicast traffic from the segment that is attached to
that port.
GARP VLAN Registration Protocol (GVRP) — You can enable your
system to transmit and receive VLAN information using GVRP. GVRP is
also addressed in Chapter 9.
IP fragmentation — When Fiber Distributed Data Interface (FDDI)
stations transmit IP packets that are too large for standard Ethernet to
handle, IP fragmentation allows your system to reformat large packets
into smaller sizes that can be bridged to Ethernet networks.
IPX SNAP translation — IPX SNAP translation allows any
802.3_RAW IPX packets that are forwarded from Ethernet to FDDI to
be translated to FDDI_SNAP (instead of FDDI_RAW), and vice versa.
The following bridging topics are covered in other chapters:
Virtual LANs (VLANs) — A VLAN is a logical grouping methodology
that allows dispersed users to communicate as if they were physically
connected to the same LAN (broadcast domain). For more information
about VLANs, including discussion of GVRP, see Chapter 9.
Trunking — You can configure your system to aggregate multiple
bridge port links into a single point-to-point trunk. Trunking allows
you to increase bandwidth and redundancy without replacing cabling.
For more information about trunking, see Chapter 8.
Bridging Overview 115
on the
bridge