7
Shared VLAN (SVL) and individual VLAN (IVL) learning are supported. With SVL
support, all VLANs in the switch share the same forwarding database. IVL allows indi-
vidual VLANs to have separate forwarding databases within the switch, and it allows the
switch to handle duplicate MAC addresses if the addresses are in different VLANs.
IGMP snooping
The BayStack 460 Switch features IP Multicast support by examining (‘snooping’) all
Internet Group Multicast Protocol (IGMP) traffic in hardware at line rate, and filtering
out (dropping) unwanted IGMP packets such as PING from disrupting network or end-
station performance.
Multiple spanning tree protocol groups
The BayStack 460 Switch supports multiple Spanning Tree Groups (STGs). It supports a
maximum of eight STGs, either all in one standalone switch or across a stack consisting
solely of BayStack 460 Switches. Multiple STGs provide multiple data paths, which can
be used for load balancing and redundancy.
Command Line Interface (CLI)
The CLI is used to automate general management and configuration of BayStack 460
Switches. The CLI is used through a Telnet session or through the serial port on the console.
ASCII configuration file
The BayStack 460 Switch can download a user-editable ASCII configuration file from a
Trivial File Transfer Protocol (TFTP) server. The ASCII configuration file can be loaded
automatically at boot time or on demand using the management systems (console menus
or CLI). Once downloaded, the configu-
ration file automatically configures the
switch or stack according to the CLI
commands in the file. This feature allows
the flexibility of creating command
configuration files that can be used on
several switches or stacks with minor
modifications.
Supports Spanning Tree
Protocol
Built-in support for Spanning Tree
Protocol (IEEE 802.1D) detects and elim-
inates logical loops in the network. When
multiple paths exist, the switch will auto-
matically place some ports on standby to
form a network with the most efficient
traffic pathways, avoiding the continual
looping of frames.
Port mirroring
The port mirroring feature (sometimes referred to as ‘conversation steering’) allows the
network administrator to designate a single switch port as a traffic monitor for a specified
port. Port mirroring copies packets flowing into a specified port and sends the replicated
data to the mirrored port for in-depth analysis of switched traffic patterns to troubleshoot
problems and optimize network configurations. Additionally, an external probe device can
be attached to the designated monitor port.
Business Communications
Manager
BayStack 460 Stack
Business Series
Terminals
Servers
Desktop
users
WLAN
Access Point
2220
i2004
Standard LAN
Power over Ethernet
Power
10/100
Mbps
Net
camera
Figure 5. Small to medium enterprise solution
