A Reliable Platform Delivers
the Highest Application Availability
and End User Satisfaction
Unforeseen downtime for a mission-critical application
can result in millions of dollars in losses. Originally
designed for service providers, the IGX 8400 series switch
offers carrier-class reliability, ensuring that your vital
business applications are always available to the people who
need them. A midplane design features front cards that
perform processing and switching functions and back cards
that perform adaptation and provide interfaces for physical
connectivity. System maintenance can be performed at the
front cards without disconnecting interface cables. Even
during maintenance and upgrades, your applications remain
available, and users remain productive.
Redundant Critical Components
Redundancy ensures nonstop operation, and all IGX common
equipment can be configured redundantly for maximum
platform reliability. AC-powered IGX 8400 units can
be equipped with dual AC power feeds and equipped with
power supplies configured in a load-sharing, redundant
mode. Processor cards can be configured for hot-standby
redundancy. All user and trunk interface modules can be
configured redundantly to achieve the required level of
reliability, and all cards are hot-swappable. New software
releases can be remotely downloaded onto the redundant
processor for background installation while traffic continues.
In the unlikely event of a problem during switchover, the
IGX 8400 switch will automatically revert to the previous
software version.
Flexible Routing Paths
The IGX 8400 series also features an advanced distributed
intelligence algorithm that enables the network to auto-
matically route new connections and, if necessary, react
to failures in network facilities. You can specify preferred
paths or avoid certain paths across the network when
configuring new connections. Each connection is routed
or rerouted to ensure that it receives its required minimum
bandwidth and configured QoS. Rerouting priorities can
also be established for every connection.
5
The IGX 8420 series switch has 16 slots.
oice,
73.0891 IGXEnterprisePLB 6.0 4/30/98 6:23 PM Page 8
(84 pages)
(144 pages)
(29 pages)
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