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1-5
Cisco WAN Manager User’s Guide
Version 10.5, Part Number 78-12945-01 Rev. D0, August 2003
Chapter 1 Cisco WAN Manager Overview
Additional CWM Release 10 Applications and Features
Graceful Software and Firmware Download and Upgrades
Software and Firmware downloading of all operating system and firmware code is fully supported by
BPX, IGX, MGX, and CWM. Software and firmware upgrades are performed by loading new code from
either a CWM workstation via TCP/IP, a new NPM module, or via dial in from Cisco’s Technical
Assistance Center (TAC). New software and firmware are downloaded throughout the network utilizing
inter-nodal trunks. New code is loaded into the standby NPM card for initiation at a specified time. This
new code can be uploaded to all other IGXs in-band through the ATM fabric connecting the switches.
Firmware upgrades for a specific function module are performed by first loading the new firmware code
into the NPM. Then a command is issued to burn the function module with the new firmware revision.
This may take up to ten minutes, during which time the function module is out of service. Software
upgrades are conducted in background, and then activated network wide. The duration of a software
activation is 10 seconds per node on a rolling basis. Configuration translation software is provided with
software upgrades to automatically migrate existing configuration information into new software
releases.
Simultaneous upgrades to multiple devices is supported via background loading of new code and
simultaneous switching to the new code.
During all software and firmware upgrades the current configuration is retained. The conversion is
automatic and performed by the new software release. If a software upgrade is faulty a single command
can return the entire network to the previous version software and configuration in ten seconds.
Performance Management
The CWM TFTP statistics collection facility offers extensive usage and error collection. A wide range
of statistics are available at the port and virtual channel level to support operations and maintenance,
customer network management and usage-based billing. Historical statistical information is stored in the
CWM Informix database. The open SQL interface architecture then provides users with direct access to
the information stored in the Informix relational database. CWM addresses historical information via the
SQL architecture because of the large volume of information present in the database and the
inefficiencies involved in retrieving it via SNMP.
• Connection Statistics
• Circuit Line Statistics
• Packet Line Statistics
• Frame Relay Port Statistics
• ATM Statistics
• Physical Layer Statistics
• ATM Layer Statistics
Open Management
CWM provides seamless element and network management for the complete Cisco WAN multiservice
switching product portfolio, including BPX, MGX, and IGX. The distributed intelligent architecture
enables each network element to collect comprehensive performance and utilization statistics. Each node
stores these statistics in a file which is then transferred to CWM, where it is stored in the SQL database.