Nortel Ethernet Routing Switch 4548GT-PWR 规格指南
For seamless scalability, the Ethernet
Routing Switch 4500 can deliver up to
384 ports, meeting almost any wiring
closet requirements of scalability and port
speed flexibility, allowing the network
infrastructure to grow as the business
requirements change.
Routing Switch 4500 can deliver up to
384 ports, meeting almost any wiring
closet requirements of scalability and port
speed flexibility, allowing the network
infrastructure to grow as the business
requirements change.
Securing access at the Edge
The Ethernet Routing Switch 4500 offers
a wide range of flexible security options
to ensure that only authorized personnel
gain access to a company’s LAN.
Whether it is through use of an IEEE
802.1X-based EAP Client or through
a device’s MAC Address, network
managers can validate that only those
who have successfully been authenticated
have access to specified resources. The
ERS 4500 can also be used in conjunc-
tion with Nortel’s innovative Secure
Network Access solution for advanced
policy-based and centralized user/device
authentication.
a wide range of flexible security options
to ensure that only authorized personnel
gain access to a company’s LAN.
Whether it is through use of an IEEE
802.1X-based EAP Client or through
a device’s MAC Address, network
managers can validate that only those
who have successfully been authenticated
have access to specified resources. The
ERS 4500 can also be used in conjunc-
tion with Nortel’s innovative Secure
Network Access solution for advanced
policy-based and centralized user/device
authentication.
For further flexibility, the Ethernet
Routing Switch 4500 can support the
authentication of multiple devices/
Users on a single port. For example, if
a User’s PC connects into the network
via an IP Phone (Figure 1), the PC and
the IP Phone can both be independently
authenticated on that port. Additionally,
if your company frequently has visiting
users, support for a Guest VLAN allows
these non-authenticated users to still
use the network but to only have access
to those resources that have been pre-
defined for the Guests, such as Internet
access.
Routing Switch 4500 can support the
authentication of multiple devices/
Users on a single port. For example, if
a User’s PC connects into the network
via an IP Phone (Figure 1), the PC and
the IP Phone can both be independently
authenticated on that port. Additionally,
if your company frequently has visiting
users, support for a Guest VLAN allows
these non-authenticated users to still
use the network but to only have access
to those resources that have been pre-
defined for the Guests, such as Internet
access.
Advanced security services also enable the
Ethernet Routing Switch 4500 to actively
protect the network against malicious
network attacks by protecting DHCP
services (DHCP Snooping), verifying
and filtering ARP traffic via in-hardware
processing (Dynamic ARP inspection),
restricting IP traffic to registered end
devices (IP Source Guard) as well as
Ethernet Routing Switch 4500 to actively
protect the network against malicious
network attacks by protecting DHCP
services (DHCP Snooping), verifying
and filtering ARP traffic via in-hardware
processing (Dynamic ARP inspection),
restricting IP traffic to registered end
devices (IP Source Guard) as well as
controlling the flow of Spanning Tree
BPDUs within the network (BPDU
Filtering).
BPDUs within the network (BPDU
Filtering).
The Ethernet Routing Switch 4500
supports advanced packet classification
and deep packet filtering of up to 128
bytes. These powerful filtering capabili-
ties can block unwanted network traffic
while ensuring that mission-critical traffic
is forwarded with minimum delay.
supports advanced packet classification
and deep packet filtering of up to 128
bytes. These powerful filtering capabili-
ties can block unwanted network traffic
while ensuring that mission-critical traffic
is forwarded with minimum delay.
Secure and simplified
network management
network management
Nortel’s Ethernet Switch Software is
supported on all Ethernet Routing
Switch 4500 models delivering simplified
network operations and management
by having a single image operate on any
mixture of models in a Stack. This elimi-
nates the need to worry about different
software versions and capabilities on
different products. The software image
needs only to be loaded to the Base Unit
of the Stack, which automatically loads
it to other Switches. Even as Switches are
added to an existing Stack, the ERS 4500
software will ensure that the new Switch
diagnostics and software are appropri-
ately upgraded to the software running
on the Stack.
supported on all Ethernet Routing
Switch 4500 models delivering simplified
network operations and management
by having a single image operate on any
mixture of models in a Stack. This elimi-
nates the need to worry about different
software versions and capabilities on
different products. The software image
needs only to be loaded to the Base Unit
of the Stack, which automatically loads
it to other Switches. Even as Switches are
added to an existing Stack, the ERS 4500
software will ensure that the new Switch
diagnostics and software are appropri-
ately upgraded to the software running
on the Stack.
The on-board USB port enables
network administrators to quickly and
easily upload or download a configura-
tion file via a USB stick. This allows
the same configuration to either be
deployed across several Switches, making
configuration of new Switches seamless
or serving as a backup in case a Switch
were to fail. The USB port also allows
for quick upload of new software images
or quick staging of new units through
network administrators to quickly and
easily upload or download a configura-
tion file via a USB stick. This allows
the same configuration to either be
deployed across several Switches, making
configuration of new Switches seamless
or serving as a backup in case a Switch
were to fail. The USB port also allows
for quick upload of new software images
or quick staging of new units through
3
a simplified configuration capability.
For added security, both the USB and
consoles ports can be locked to prevent
unauthorized intrusion.
For added security, both the USB and
consoles ports can be locked to prevent
unauthorized intrusion.
The Ethernet Routing Switch 4500
supports secure management through
access control lists, Simple Network
Management Protocol (SNMPv3),
Secure Shell (SSHv2), and RADIUS
and TACACS+ authentication when
connecting to the switch or stack.
supports secure management through
access control lists, Simple Network
Management Protocol (SNMPv3),
Secure Shell (SSHv2), and RADIUS
and TACACS+ authentication when
connecting to the switch or stack.
The Ethernet Routing Switch 4500
can be managed through Nortel’s
Command Line Interface (NNCLI),
which provides a common industry look
and feel to CLI commands, helping to
reduce training and operational costs.
The ERS 4500 also provides GUI-based
management via its Device Manager
application and web-based interfaces
for ease of use.
can be managed through Nortel’s
Command Line Interface (NNCLI),
which provides a common industry look
and feel to CLI commands, helping to
reduce training and operational costs.
The ERS 4500 also provides GUI-based
management via its Device Manager
application and web-based interfaces
for ease of use.
Redundant power support
Adding Nortel’s Redundant Power
Supply 15 (RPS15) ensures that the
Ethernet Routing Switch 4500 delivers
the stable, redundant power support
crucial for today’s high-availability,
mission-critical environments. The
RPS15 Chassis can support up to three
600 Watt Power Supply Modules. Each
Module can provide redundant power
support to one ERS 4500 PoE Switch
or up to four non-PoE models
Supply 15 (RPS15) ensures that the
Ethernet Routing Switch 4500 delivers
the stable, redundant power support
crucial for today’s high-availability,
mission-critical environments. The
RPS15 Chassis can support up to three
600 Watt Power Supply Modules. Each
Module can provide redundant power
support to one ERS 4500 PoE Switch
or up to four non-PoE models
1
.
Deployments in converged networks
are greatly simplified through dynamic
power management of the PoE ports,
with the load sharing and redundant
power offered by Nortel’s RPS15.
Combined, these features are designed
are greatly simplified through dynamic
power management of the PoE ports,
with the load sharing and redundant
power offered by Nortel’s RPS15.
Combined, these features are designed
Figure 1. Typical enterprise converged connectivity