Switch Software Description; Connections And Connection Routing - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

Switch Software Description

A clock output allows synchronizing an adjacent IGX switch or other network device to the BPX switch
and the network. In nodes equipped with optional redundancy, the standby hardware is locked to the
active hardware to minimize system disruption during system switchovers.
You can configure the BPX Service Node to select clock from these sources:
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Switch Software Description
The Cisco WAN switching cell relay system software shares most core system software, as well as a
library of applications, between platforms. System software provides basic management and control
capabilities to each node.
BPX node system software manages its own configuration, fault-isolation, failure recovery, and other
resources. Because no remote resources are involved, this ensures rapid response to local problems.
This distributed network control, rather than centralized control, provides increased reliability.
Software among multiple nodes cooperates to perform network-wide functions such as trunk and
connection management. This multiprocessor approach ensures rapid response with no single point of
failure. System software applications provide advanced features that you can install and configure as
required.
Some of the many software features are:
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The system software, configuration database, and the firmware that controls the operation of each card
type is resident in programmable memory and can be stored off-line in the Cisco WAN Manager NMS
for immediate backup if necessary. This software and firmware is easily updated remotely from a
central site or from Customer Service, which reduces the likelihood of early obsolescence.

Connections and Connection Routing

The routing software supports the establishment, removal and rerouting of end-to-end channel
connections. There are three routing modes:
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Cisco BPX 8600 Series Installation and Configuration
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External (T1/E1)
Line (DS3/E3)
Internal
Automatic routing of connections (Automatic Routing Management feature).
Various classes of service that may be assigned to each connection type (Advanced CoS
Management).
Bandwidth reservation on a time-of-day basis.
Detection and control of network congestion with ABR with VSVD or Optimized Bandwidth
Management (ForeSight) algorithms.
Automatic self-testing of each component of the node.
Automatic collecting and reporting of many network-wide statistics, such as trunk loading,
connection usage, and trunk error rates, as you specify.
Automatic Routing
The system software computes the best route for a connection.
Manual Routing
You can specify the route for a connection.
Chapter 1 The BPX Switch: Functional Overview
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001