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IBM 8265: Product Description
Switch Characteristics
The IBM 8265 Nways ATM Switch has the following characteristics:
Internetworking Technology
8265 internetworking solutions provide connectivity between internal networks, and
connectivity from internal networks to ATM and WAN backbones. The internetworking
capabilities of the 8265 system combine with the flexibility of port-switching media
modules to deliver bandwidth on demand for existing LANs.
Support for All ATM Classes of Service
Constant Bit Rate, Variable Bit Rate, Available Bit Rate, and Unspecified Bit Rate
classes of service are supported.
Advanced Traffic Management
Traffic shaping at Virtual Path (VP) level, statistics at connection level, traffic policy,
and port mirroring are provided.
Intelligent Power Subsystem
The 8265 power subsystem provides easy access to load-sharing power supplies,
high power availability, and controller-based power verification features designed to
ensure optimal performance. The power supplies are installed from the front of the
switch, and are easily accessible.
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Load-sharing power supplies
The 8265 is powered by load-sharing power supplies. By evenly distributing
power consumption among all supplies installed in the switch, the load-sharing
design of the switch ensures that there is no single point of failure in the power
subsystem.
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Hot swappable power supplies
The 8265 power supplies are hot swappable. You do not have to power off the
switch to install or remove them. Rather, you just plug the new power supply in
and it automatically assumes its share of the power load.
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High power capacity
When the 8265 switch runs in non-fault tolerant mode with full power capacity
(four power supplies), its power supplies deliver up to 1500 watts of power.
When the 8265 switch runs in fault-tolerant mode with full power capacity, up to
1100 watts of power is supplied to the installed modules. If a power supply fails,
the power delivered by the remaining power supplies is sufficient to keep the
switch and all installed modules running.
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Controller-managed power consumption
The 8265 Fault Tolerant Controller Module polls each new module installed in the
switch to confirm that the new module’s power requirements can be fully satisfied.
If enough power is available, the new module will power on. If available power is
inadequate, the new module will not be permitted to power on.
In addition, you can assign a power priority level to modules that determines
whether a module is to be powered off when a power supply failure causes switch
power to drop below the minimum level required to run all installed modules. This
function allows you to specify the modules that will continue to run in case of a
power deficit in the switch.
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