Nortel BayStack 450-1SX, BayStack 350-24T, BayStack 450-1SR, BayStack 450-1LX, BayStack 450-1LR Specifications

Nortel Networks introduces the next
generation of the most successful
workgroup switches ever. Completely
redesigned for faster throughput, support
for high-speed uplink options, and leading­edge software features, new BayStack* 350
Switches carry on the Nortel Networks
tradition of affordable, high-performance
workgroup switching.

BayStack 350 Switches support 10/100
autosensing on all UTP ports, for seamless
migration to 100 Mbps connections without
time-consuming trips to the wiring closet
whenever end stations are upgraded to
Fast Ethernet. To further simplify network
setups, all ports also automatically sense
half- or full-duplex connections for
high-speed server or switch-to-switch
configurations.

BayStack 350-12T and BayStack
350-24T Switches feature 12 and
24 10BASE-T/100BASE-TX
ports respectively (see Table 1).
For high-bandwidth traffic

Data Sheet

Flexible High-Speed
Options, Including
Gigabit Ethernet
and ATM

10/100 Half-Duplex
and Full-Duplex
Autosensing Ports

Advanced Features
Include VLAN Trunking
and Priority Queuing

Year 2000 Compliant

Workgroup Products

BayStack

350 10/100/1000 switches

to the network core, both switches offer
a Media Dependent Adapter (MDA) slot
for Gigabit Ethernet, Fast Ethernet fiber,
10/100 autosense Ethernet, and future
ATM ports.

PORT AND MDA
CONFIGURATIONS

Table 1: Port and MDA Configurations
of the BayStack 350 Switches.

Autosensing
10BASE-T/
100BASE-TX MDA

BayStack 350 Switch Ports Slot

BayStack 350-12T 12 1

BayStack 350-24T 24 1

10/100 Autosensing
on Every Port

Every UTP port on the BayStack 350
Switches is equipped with autosense
technology to automatically detect
and support the speed and mode of
a connected device. In addition to
detecting whether a connected device
is operating at 10 Mbps or 100 Mbps,
and automatically adjusting to the
optimal speed, each switched port
also automatically detects and supports
full-duplex connections to servers,
power-user end stations or other switches,
as well as half-duplex connections to
legacy NICs or hubs.

BayStack 350 10/100/1000 Switches Data Sheet2

Features and Benefits

Flexible Choices
in High-Speed Uplinks

MDAs for Gigabit Ethernet, Fast
Ethernet fiber, four additional 10/100
autosense ports, or future ATM uplinks
provide the high-bandwidth choices
that fit into any network architecture
(see Figure 1).

Redundant
Gigabit Uplink Option

The Gigabit Ethernet MDA is available
with LinkSafe,* which provides two
physical fiber connectors for the Gigabit
uplink. Upon primary path failure,
traffic is diverted to the redundant
path in microseconds, protecting
critical Gigabit Ethernet connections
to servers or the network center.

Wire-Speed Throughput

2.5 Gigabit per second (Gbps) switching
fabric and custom switching ASICs support
full 802.1D-compliant MAC Layer frame
forwarding and filtering across all ports
at the peak rate of 3 million packets per
second. The BayStack 350 Switches
continue the Nortel Networks tradition of
industry-leading throughput performance.

Advanced VLAN Support

Up to 64 port-based or policy-based

1

VLANs can be established for each
switch, to extend the broadcast domain
and segment network traffic. Each switch
can also support 4,096 transit VLANs.

802.1Q VLAN Trunking

VLAN trunking is supported on every
port of the switch, allowing efficient
means of transporting broadcast domains
across switches.

802.1p Priority Queuing

Standards-based priority queuing
enables prioritization of traffic by
protocol, so important network traffic
always get through.

1

Available in future software agent release.

Figure 1: BayStack 350 10/100/1000 Switches provide high-bandwidth

connections to servers and the network center.

Accelar 1200

Routing Switch

Segment 1–

Shared 10 Mbps

Segment 2–

Shared 100 Mbps

BayStack 250 Series

10/100 Autosense Hubs

MultiLink Trunking to 800 Mbps each

BayStack 350-24T
Switch

Switched

10/100 Mbps

Switched

10/100 Mbps

1 Gbps w/ LinkSafe

redundant connection

3

MultiLink Trunking

Up to four ports can be “trunked”
together to provide a high-bandwidth,
full-duplex trunk of up to 800 Mbps
capacity. MultiLink Trunking also
provides load-balancing and fail-over
protection for important connections to
other switches or servers: if one of the
trunked links should fail, the remaining
links in a MultiLink Trunk will still be
available. Up to six separate MultiLink
Trunks can be configured per switch.

IGMP Snooping

The BayStack 350 Switches feature a new
level of efficient IP MultiCast support by
examining (“snooping”) all IGMP traffic
in hardware at line rate, and pruning
unwanted data streams from affecting
network or end station performance.

Enterprise-Size
MAC Address Table

BayStack 350 Switches support more
than 16,000 MAC addresses per switch
for deployment of large-scale enterprise
networks with many attached devices and
workgroups connected to each switch.
(In a full 802.1Q environment, up to
32,000 MAC addresses are supported.)

Supports
Spanning Tree Protocol

BayStack 350 Switches include built-in
support for Spanning Tree Protocol
(IEEE 802.1D), which detects and
eliminates logical loops in the network.
When multiple paths exist, the switch
will automatically place some ports on
standby to form a network with the most
efficient traffic pathways, avoiding the
continual looping of frames.

Fully Integrated
into Optivity Network
Management Software

1

BayStack 350 Switches feature built-in
support for Optivity* network management
software, enabling complete Simple
Network Management Protocol (SNMP)
and RMON monitoring and control.
Network administrators can manage
the entire network, including all hubs,
switches, and routers, from a single
management station, dramatically reducing
the network total cost of ownership.

Web-Based Management

1

BayStack 350 Switches include built-in
Web-based network management, so
network administrators can easily monitor
the status and access data about their
network via the local corporate intranet,
or from any World Wide Web-connected
PC, anywhere in the world.

BayStack 350 10/100/1000 Switches Data Sheet

Flexible Management Choices

In addition to switch management via
Optivity and any standard Web browser,
an easy-to-use menu-driven interface
can be accessed via console or Telnet for
complete configuration and management
of the BayStack 350 Switch.

Other Advanced
Management Features

• Adjustable rate limits protect the LAN
against broadcast or multicast storms
that can severely limit performance.

• BootP and TFTP support allows
centralized switch IP address assignment,
software upgrades, and SNMP agent
updates over the network.

1

Available in future software agent release.