Техническое Руководство для Nortel 1624
2
The Passport 1600 is available in three
models:
• Passport 1648T with 48 10/100 ports
models:
• Passport 1648T with 48 10/100 ports
plus 4 connections for small form
pluggable (SFP) GBICs
pluggable (SFP) GBICs
• Passport 1612G with connections
for 12 SFP GBICs
• Passport 1624G with connections
for 24 SFP GBICs
The Passport 1600 series provides a
unique fixed port routing switch solution
designed to provide the resiliency,
performance, and security required by
today’s application-driven networks.
unique fixed port routing switch solution
designed to provide the resiliency,
performance, and security required by
today’s application-driven networks.
Resiliency
The Passport 1600 Routing Switch
provides increased reliability for small
network cores. Dual redundant power
supplies ensure maximum availability of
networking hardware. Support for Split
Multi-link Trunking (SMLT)
provides increased reliability for small
network cores. Dual redundant power
supplies ensure maximum availability of
networking hardware. Support for Split
Multi-link Trunking (SMLT)
†
and Multi-
link Trunking (MLT) provides redundant
load sharing connections to one or more
desktop switches. Resiliency is addressed
at multiple layers ensuring the highest
availability of resources and the lowest
network downtime.
load sharing connections to one or more
desktop switches. Resiliency is addressed
at multiple layers ensuring the highest
availability of resources and the lowest
network downtime.
Split Multi-link Trunking (SMLT) and
Multi-link Trunking (MLT)
Multi-link Trunking (MLT)
MLT support allows up to four ports to
be grouped as a single trunk, providing
increased bandwidth and resilient connec-
tions. Combined with Nortel Networks
unique SMLT technology, switches can
be dual homed or have multiple active
connections to a network core. By
utilizing these dual connections and
bypassing traditional solutions like
Spanning Tree Protocol, customers can
increase available bandwidth and decrease
network downtime with a simple
keystroke. Customers can now increase
reliability and performance without
restructuring the network.
be grouped as a single trunk, providing
increased bandwidth and resilient connec-
tions. Combined with Nortel Networks
unique SMLT technology, switches can
be dual homed or have multiple active
connections to a network core. By
utilizing these dual connections and
bypassing traditional solutions like
Spanning Tree Protocol, customers can
increase available bandwidth and decrease
network downtime with a simple
keystroke. Customers can now increase
reliability and performance without
restructuring the network.
Performance
Application performance minimizes
packet delay and jitter when the traffic
load increases on the switch. Wire-speed
routing and Quality of Service (QoS)
mechanisms deliver the performance
packet delay and jitter when the traffic
load increases on the switch. Wire-speed
routing and Quality of Service (QoS)
mechanisms deliver the performance
Passport 8600
Servers
Passport 1648T
Passport 1648T
Figure 2: Network edge
BayStack
Business Policy
Switch stack
Passport 1624G
BayStack 460
BayStack 460
Servers
Figure 1: Aggregation
†Supported in a future release.
BayStack
Business Policy
Switch stack
required for applications such as IP
telephony, as well as multimedia and
collaboration applications. A non-blocking
switch fabric, together with hardware-based
routing, decrease the chance that data will
be dropped when the traffic load increases
on the switch. The policing and shaping
features
telephony, as well as multimedia and
collaboration applications. A non-blocking
switch fabric, together with hardware-based
routing, decrease the chance that data will
be dropped when the traffic load increases
on the switch. The policing and shaping
features
†
permit traffic flows to be
controlled based on applications needs.
With support for 48 10/100 ports (Passport
1648T) or up to 24 GBIC ports (Passport
1624G), application performance can be
delivered anywhere in the network.
With support for 48 10/100 ports (Passport
1648T) or up to 24 GBIC ports (Passport
1624G), application performance can be
delivered anywhere in the network.
QoS
Being able to classify, process, and expedite
traffic based on an application’s require-
ments are more important than ever. QoS
and the ability to prioritize traffic are what
enables a switch to support bandwidth-
sensitive applications. By assigning QoS
levels to traffic flows, applications can get
the bandwidth and network priority
demanded by specific applications. Four
priority queues are the basis for QoS in the
Passport 1600. Combined with wire-speed
routing and filtering, the Passport 1600’s
QoS features enable application-based
solutions to be implemented when and
where you need them most.
traffic based on an application’s require-
ments are more important than ever. QoS
and the ability to prioritize traffic are what
enables a switch to support bandwidth-
sensitive applications. By assigning QoS
levels to traffic flows, applications can get
the bandwidth and network priority
demanded by specific applications. Four
priority queues are the basis for QoS in the
Passport 1600. Combined with wire-speed
routing and filtering, the Passport 1600’s
QoS features enable application-based
solutions to be implemented when and
where you need them most.
Routing performance
Wire-speed routing and a non-blocking
switch fabric provide the basis for a
network designed to increase collaboration
and productivity. IP telephony, Customer
Relationship Management (CRM), and
collaboration applications promise great
switch fabric provide the basis for a
network designed to increase collaboration
and productivity. IP telephony, Customer
Relationship Management (CRM), and
collaboration applications promise great
increases in employee productivity.
However, these applications have stringent
requirements on the network. The
Passport 1600 is designed to be able to
route, filter, and queue traffic so that no
data is lost, dropped, or delayed. Applica-
tions get the bandwidth they need, when
they need it, without delay or jitter.
However, these applications have stringent
requirements on the network. The
Passport 1600 is designed to be able to
route, filter, and queue traffic so that no
data is lost, dropped, or delayed. Applica-
tions get the bandwidth they need, when
they need it, without delay or jitter.
Security
Security features provide added protection
for switch configuration data, while packet
filtering helps secure and segment sensitive
traffic or network access. Support for
Simple Network Management Protocol
(SNMPv3)
for switch configuration data, while packet
filtering helps secure and segment sensitive
traffic or network access. Support for
Simple Network Management Protocol
(SNMPv3)
†
and Secure Shell (SSH)
†
supply protection for sensitive switch
configuration data. Multi-level access and
defined access policies help secure the
switch against unauthorized management
configuration data. Multi-level access and
defined access policies help secure the
switch against unauthorized management