Nortel BayStack 5510-24T Specifications page 4

By combining the reliability of the Passport
8600 with the BayStack 5510's resilient trunk-
ing features—including DMLT, MLT, and
bi-directional FAST stacking, Nortel Networks
has created the next generation of flexible
networking solutions. BayStack 5510 Switches
are architected to support SMLT and Inter
Switch Trunk (IST) in the future.
Integrated Time Domain
†
Reflectometer (TDR)
For advanced resiliency, the BayStack 5510 is
architected to include an integrated TDR.
This feature will simplify troubleshooting of
the physical cable plant, enabling IT managers
to quickly identify the failing mechanism and
isolate to the source of the problem, helping
ensure maximum uptime of the network.
Through remote and non-invasive diagnosis
of cabling issues such as cable opens, cable
shorts or impedance mismatch in the cable
and report, within one meter, the distance of
the fault. The switch can detect and report
these issues without unplugging cables and
plugging in expensive cable testers. (Feature
supported with future software release.)
Figure 5. Enterprise solution
BayStack 5510 stack
Floor 1
10/100/1000 Mbps
connections
Desktop users
Passport 8600 Switch
4
Redundant power and UPS support
With connectivity to the BayStack 10 Power
Supply Unit (PSU) paired with a –48V DC-
to-DC converter module, BayStack 5510
Switches deliver redundant power supply
(RPS) support crucial in mission-critical
environments. Nortel Networks 800-watt
BayStack 10 Power Supply Unit allows up to
four failed network devices to simultaneously
receive RPS support. In addition to the
RPSU support, Uninterruptible Power
Supply (UPS) capability is provided cost-
effectively in the same BayStack 10 chassis.
IPv6 filtering and classification
support for future applications
BayStack 5510 Switches are able to identify,
prioritize, classify, and redirect IPv6 traffic to
a router. These switches can address the need
for larger addressing and tighter security as
the networks grow.
Jumbo frame support for
larger file applications
Jumbo frame support of up to 9,216 bytes is
provided on each port for applications
requiring large frames such as graphics and
video applications.
Gigabit links
Servers
‡
Split Multi-Link Trunks
All ports active
IST
Distributed
Multi-Link
Trunks
Servers
Quality of Service (QoS)
The QoS features of the BayStack 5510
Switch allow users to not only utilize band-
width more efficiently, optimizing existing
network resources and capabilities, but also
provide packet classification and marking at
the edge of the network, simplifying the QoS
deployment at the aggregation and core of the
network. By classifying, prioritizing, policing,
and marking LAN traffic (based on DiffServ,
Code Point, and 802.1p), networks can offer
reliable connectivity and required bandwidth
for mission-critical applications, such as IP
telephony, to specific groups, users, and indi-
vidual devices.
For each of these applications, advanced QoS
features support Internet Engineering Task
Force (IETF), the standard DiffServ QoS
architecture—a packet classification based on
the content of IP packet header fields (voice,
video, data)—as well as traffic policing.
QoS and policy management
DiffServ QoS enables networks to read, alter,
prioritize, tag, or mark IP packets based upon
information embedded in the Type of Service
(ToS) field. The level of service can be marked
in the embedded information inside the ToS
field of each IP packet. DiffServ is based on
BayStack 5510 stack
10/100/1000 Mbps
connections
Passport 8600 Switch
IST = Inter Switch Trunk
‡ SMLT trunk from each stack
may have up to 8 links
Floor 2
Desktop users