Passport 8600 network core allows customers
to double network bandwidth with no extra
investment. The Passport 8600 provides a
self-healing network which delivers the reli-
ability and availability required by today’s
mission-critical applications. By combining
the reliability of the Passport 8600 with the
resilient trunking features of the BayStack
460 (DMLT, MLT, etc.), Nortel Networks
offers the next generation of flexible
networking solutions (Figure 4).
Stackable with the BayStack
450 Switch, BayStack Business
Policy Switch and BayStack
470 Switch*
The BayStack 460 Switch can be stacked
with the BayStack 450 Switches, BayStack
Business Policy Switches, and BayStack 470
Switches.
†
A maximum of eight switches
can be stacked together in any combination.
to deploy the solution that is right for them
and offers the flexibility to implement
infrastructure changes at their own pace.
Figure 5 depicts an example of a small-
to mid-sized enterprise solution with the
BayStack 460 Switch. Figure 6 shows
an example of a large enterprise solution.
MAC addresses
BayStack 460 Switches support up to
16,000 MAC addresses per switch or stack
for deployment of large-scale enterprise
networks with many attached devices and
workgroups, allowing for scalability and
cost-effectiveness.
VLAN support
Up to 256 port-based VLANs can be estab-
lished for each switch, to extend the broadcast
domain and segment network traffic. The
256 VLANs can be spread among port-
based, and MAC source address-based
VLANs (maximum of 48 MAC source
address-based VLANs). The 256 VLANs can
be on a standalone switch or across a stack.
Protocol-based VLANs allow switch ports to
be assigned to a broadcast domain, based on
the protocol information within the packet.
These VLANs can localize broadcast traffic
and assure that the specified protocol type
packets are sent only to the protocol-based
VLAN ports.
Shared VLAN (SVL) and individual VLAN
(IVL) learning is supported. With SVL
support, all VLANs in the switch share
the same forwarding database. IVL lets
individual VLANs have separate forwarding
databases within the switch. IVL allows the
switch to handle duplicate MAC addresses
if they are in different VLANs.
IGMP snooping
The BayStack 460 Switch features 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.
Common software platform
All BayStack switches, including the
BayStack 460 Switch, have a common
“look and feel” which reduces training
costs. This allows the switches to be
managed in a similar fashion via a broad set
of management tools. These tools include
Web, Command Line Interface (CLI),
menus, Optivity Network Management
System (NMS), Optivity Switch Manager
(OSM), and Optivity Policy Services (OPS).
End-to-end Voice over IP
The BayStack 460 Switch provides enterprises
another option for end-to-end deployment
of Voice over IP. Succession Communication
Server for Enterprise 1000, Business
Communications Manager, Meridian, and
BayStack all provide the choices that allow
enterprises—from small and medium busi-
nesses to large campus infrastructures—
3
BayStack 460-24T-PWR Switch Stack
Passport 8600 Switch
BayStack 460-24T-PWR Switch Stack
Passport 8600 Switch
Interswitch Trunk
All ports active
Figure 4: Split MultiLink Trunking (SMLT)
†
Future software release.
