Nortel BayStack 470-24T, BayStack 470-48T, 470, 470-24T-PWR, 470-48T-PWR Specifications
Product Brief
Ethernet Switch 470 family
Converged edge
> Desktop connectivity
> Power over Ethernet
> IP Telephony
> Wireless LAN
Key features
> High-speed desktop switching
> Power over Ethernet
> Resilient Stacking
> Distributed Multi-Link Trunking
> Quality of Service
> Security features
> Advanced management
The Nortel Ethernet Switch 470 product
family is a stackable solution that
provides resiliency, security and convergence readiness required by today’s
application and competition-driven
enterprise networks. The Ethernet
Switch 470 family delivers Layer 2
switching with Power over Ethernet
models for simplified network deployments to help drive lower Total Cost of
Ownership.
The Ethernet Switch 470 is available
in four models: the Ethernet Switch
470-24T with 24 10/100 ports plus two
Gigabit Interface Converters (GBICs)
ports; the Ethernet Switch 470-48T
with 48 10/100 ports and two GBICs;
the Ethernet Switch 470-24T-PWR
with 24 10/100 ports supporting Power
over Ethernet plus two GBICs; and the
Ethernet Switch 470-48T with 48
10/100 ports supporting Power over
Ethernet and two GBICs. All models
include built-in stacking ports, redundant power support and are available
in compact one Rack Unit (RU)
high design.
High-density desktop
switching
Up to eight Ethernet Switch 470-24T,
470-48T, 470-24T-PWR or 470-48TPWR may be combined in a single stack
to support up to 384 10/100 ports and
managed as a single entity. The Ethernet
Switch 470-48T and 470-48T-PWR offer
additional flexibility for uplink connection
as ports 47 and 48 can be configured as
either 10/100Base-T or GBIC. The
Ethernet Switch 470-24T and 470-24TPWR may utilize all 26 ports simultaneously. The 2.56-Gbps cascading
bandwidth on these switches offers dedicated bandwidth between the switches
Ethernet Switch 470 stack
Ethernet Switch 470-24T-PWR
Ethernet Switch 470-48T-PWR
without sacrificing any uplink ports. The
Ethernet Switch 460-24T-PWR can also
be stacked with Ethernet Switch 470 or
470-PWR. The uplink ports can be used
for connections to backbone switches
such as the Ethernet Routing Switch
8600, 8300, 1600 or 5500.
Power over Ethernet
(470-PWR)
IEEE 802.3af compliant
The Ethernet Switch 470-PWR provides
IEEE 802.3af standards-compliant
Power over Ethernet (PoE) and is
designed to power devices such as IP
phones, wireless access points, network
cameras, security and lighting devices,
and access control devices (badge readers).
The benefit of being interoperable with
standards-based equipment means that
customers are not forced to tie themselves to any one vendor, as the switch
has the flexibility to power multiple
vendors’ devices. The switch can supply
power up to 15.4 Watts per port, which
meets the IEEE 802.3af standard.
Dynamic power management
Each port on the Ethernet Switch 470PWR can be configured to limit the
power delivered to a device. Each port
can also be configured for power
priority level — low, high and critical.
On the switch, total available power is
monitored. In the case where all available power is fully utilized, the switch
may turn off lower priority ports and
turn on higher priority ports.
The Ethernet Switch 470-PWR can
automatically disable a port if there is a
short. All other ports on the switch will
remain active and will not be affected
by the disabled port.
Plug-n-play IP Telephony switching
Automatic Discovery and Automatic
Configuration (ADAC) capability
enables the switch to detect Nortel IP
Phones and handsets and automatically
configure the port and QoS parameters.
The switch supports a number of preconfigured MAC address ranges and
also allows users to enter their own
configurable ranges, enabling them to
detect additional Nortel IP handsets
and other vendors’ devices.
The Ethernet Switch 470-PWR
provides simplified Java Device Manager
and Web-based configurations on data
and power properties. These graphical
user interfaces make it simple to set up
data and power configurations.
Smart Auto-Negotiation
on 470-PWR GBIC
When connecting to a device that
supports auto-negotiation, the Ethernet
Switch 470-PWR will automatically
enable the auto-negotiation capability.
This feature provides support for
RFI/FEFI — ensuring that if a single
strand in a fiber pair should fail, the
problem will be detected quickly.
Load sharing and redundant
power for 470-PWR
Ethernet Switch 470-24T-PWR or
470-48T-PWR provides up to 370 watts
of DTE power for Power over Ethernet
devices. With the addition of a Redundant Power Supply RPS15 chassis and
the 600-watt RPS15 power module, the
Ethernet Switch 470-48T-PWR can
support up to 740 watts of power. This
solution will provide 15.4 W per port
from the Ethernet Switch 470-48T-PWR.
Additionally, the RPS15 chassis and
power supply can be used to provide
dual power feeds to the switch, ensuring
higher availability where customers
require their switches connected to more
than one power feed. A DC connector
cable is required to connect from an
Ethernet Switch 470 or 470-PWR to
the RPS15 RPSU module (see Ordering
information).
Resiliency Features
Two Built-in Stacking Ports
Ethernet Switch 470 models have two
built-in stacking ports for simpler,
quicker and more cost-effective stacking.
This unique stacking design frees up
both of the uplink ports for dedicated
connectivity to the backbone. A
46cm/18” stacking cable is included
with the product (Figure 1).
A key differentiator for the Ethernet
Switch 470 family, when compared to
competitive switches, is its resilient
stacking feature. This switch can stack
up to eight units with a resilient cascade
stacking design, assuring continuous
uptime even if a switch in the stack
should fail (Figure 2).
2
Figure 1. Built-in stacking ports
Feature 470 470-PWR 460-PWR
10/100 ports 24 / 48 24 / 48 24
Power over Ethernet No Yes Yes
Built-in stacking Yes Yes No
GBIC uplinks 2 2 2 (optional with MDA)
100Base-FX uplinks No No 2 or 4 (optional with MDA)
Height (RU = Rack Unit) 1 RU 1 RU 1.5 RU
Table 1. Key differences between Nortel Ethernet Switch 470,
470-PWR and 460-PWR
3
Auto Unit Replacement
The Auto Unit Replacement (AUR)
feature provides the user with the ability
to retain the configuration (CFG) image
of a unit in a stack during a unit replacement. The retained configuration image
from the old unit can be restored to the
new unit. This feature saves time and
effort required to replace a failed unit.
Distributed Multi-Link Trunking
Multi-Link Trunking (MLT) enables
grouping of links between the Ethernet
Switch 470 and another switch or server
to provide greater bandwidth with active
redundant links. With Nortel’s Distributed Multi-Link Trunking (DMLT)
feature, trunked ports can span multiple
units of the stack for fail-safe connectivity to mission-critical servers and the
network center (Figure 3). This can
provide greater bandwidth up to 8 Gbps
with active redundant links in one
trunk. Up to six trunks are supported
per switch or stack.
The resilient trunking features DMLT
and MLT of the Ethernet Switch 470
can be combined with the SMLT
feature of 8600, 8300, 5500 or 1600
switches in a cluster configuration
providing a self-healing network which
delivers maximum reliability and availability (Figure 4). Multiple connections
to the network core allow customers to
double their network bandwidth with
no extra investment as all ports are
active in SMLT configuration.
802.3ad Link Aggregation
IEEE 802.3ad provides an industrystandard method for bundling multiple
links together to form a single trunk
between two networking devices. Both
Dynamic Link Aggregation Group
(LAG) trunks and MLT trunks are
supported. Once configured, the Link
Aggregation Group or trunk group is
managed by the Link Aggregation
Control Protocol (LACP). When one of
the active links goes down, the standby
link becomes active.
Virtual Link Aggregation
Control Protocol (VLACP)
VLACP is a Nortel extension of the
Link Aggregation Control Protocol to
provide a Layer 2 handshaking protocol
which can detect end-to-end failure
between two physical Ethernet interfaces. It allows the switch to detect unidirectional or bi-directional link failures
irrespective of intermediary devices and
enables significant improvements in
network fail-over times.
Spanning Tree Protocol
Built-in support for Spanning Tree
Protocol (IEEE 802.1D) 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.
Multiple Spanning Tree
protocol groups
The Ethernet Switch 470 supports
Nortel’s multiple spanning tree groups
(STGs). They support a maximum of
eight STGs, either all in one standalone
switch or across a stack. Multiple STGs
provide multiple data paths, which can be
used for load balancing and redundancy.
Rapid Spanning Tree Protocol
Built-in support for Rapid Spanning
Tree Protocol (IEEE 802.1w) and
Multiple Spanning Tree Groups (IEEE
802.1s) provides standards-based solutions for eliminating logical loops in the
network.
Networking Made Simple
Full Auto-sensing on Every Port
Every UTP port on the Ethernet Switch
470 is equipped with autosensing
technology to automatically detect and
support the speed and mode of a
connected device. The ports determine
whether a connected device is operating
at 10 Mbps or 100 Mbps, and automatically adjust to the optimal speed.
Figure 2. In the unlikely event of a
switch failure, the stack integrity is
maintained: cascade signals loop
back at point of failure.
Figure 3. Distributed Multi-Link
Trunking across stack for higher
bandwidth and fault tolerance
Ethernet Switch 470-48T Stack
Multi-Gigabit
load-balancing and
failover protection
for uninterrupted
access to local
servers and the
network center
Multi-Link Trunking
to Ethernet Switch
at the network center
Ethernet Routing
8600 Switch
Loading...