Appendix C Firmware Upgrade and Downgrade Procedures

Description of Upgrade/Downgrade Terminology

clrallcnf

The MGX 8220 active ASC CLI command, clrallcnf, is used in place of the resetsys command as part of a downgrade in which the configuration information can not be maintained for compatibility reasons. The clrallcnf command will terminate all Telnet sessions. You must reinitiate a Telnet session after an ASC card returns to the active state.

resetsys or clrallcnf

Some standard techniques can involve releases that support downgrade without configuration loss (compatible releases). For these releases, the resetsys command can be used. For releases that involve configuration loss, the clrallcnf command should be used.

Save/Restore ASC Configuration

The ASC card stores ASC configuration information in BRAM (battery-backed RAM). The BRAM contains a revision that identifies the format of the configuration information. The format can change from release to release. The newer version of firmware always provides conversion routines that automatically reformat the configuration information as part of an upgrade. However, there is no support for reformatting as part of a firmware downgrade.

Upgrade/Downgrade

If the BRAM revision is different between the firmware revisions involved in an upgrade, the active ASC BRAM information should be saved prior to the upgrade using:

tftp shelf

tftp> bin

tftp> get AXIS_ASC_ACTIVE.BR

tftp> quit

In general, it is recommended to save the active ASC BRAM information prior to any upgrade.

If the BRAM revision is different between the firmware revisions involved in a downgrade, the active and standby ASC BRAM information should be restored following the downgrade using:

tftp shelf

tftp> bin

tftp> put AXIS_ASC_ACTIVE.BR

tftp> quit

tftp shelf

tftp> bin

tftp> put AXIS_ASC_ACTIVE.BR AXIS_ASC_STANDBY.BR

tftp> quit

The active and standby ASC cards must be reset in order to run the saved configuration. If the

ASC BRAM revision is the same between the firmware revisions involved in a downgrade, the ASC configuration should be preserved (there is no need to restore the configuration).

 

 

Cisco MGX 8220 Installation and Configuration

 

 

 

 

 

 

 

Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

 

 

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MGX 8220 specifications

The Cisco Systems MGX 8220 is a versatile, high-performance media gateway that has become an integral component in the telecommunications infrastructure. Designed to facilitate the transition from traditional circuit-switched networks to advanced packet-switched environments, the MGX 8220 supports a wide array of voice, video, and data services, making it an essential tool for service providers and enterprises seeking to enhance their network capabilities.

One of the key features of the MGX 8220 is its robust signaling and media processing capabilities. Equipped with support for both Voice over IP (VoIP) and traditional telephony protocols, this gateway enables seamless integration of different communication formats. It boasts a modular architecture, which allows for the addition or removal of various line cards to meet changing demands and technology advancements. This modularity provides operators with the flexibility to scale their services without significant overhauls to their existing infrastructure.

The MGX 8220 is capable of delivering high-density media handling for a multitude of services. With its support for ATM and IP networks, the gateway can handle TDM (Time-Division Multiplexing) to packet voice conversions efficiently. It is designed to optimize network resources by dynamically allocating bandwidth based on traffic requirements, thus ensuring efficient use of network resources and improved performance.

Another significant characteristic of the MGX 8220 is its enhanced quality of service (QoS) features. This capability ensures that voice and video traffic is prioritized appropriately, minimizing latency and jitter while maximizing overall call quality. By employing sophisticated traffic management techniques, the MGX 8220 can deliver a superior user experience, which is critical for any service provider aiming to offer competitive communication solutions.

Furthermore, the gateway includes built-in security features to protect against unauthorized access and ensure the integrity of sensitive data. This includes encryption for voice and video transmission, as well as support for secure signaling protocols.

Overall, the Cisco Systems MGX 8220 stands out as a comprehensive media gateway solution, providing essential functionalities for modern communication needs. Its combination of modularity, high-density processing, effective QoS management, and security features makes it a compelling choice for organizations looking to modernize their telecommunications infrastructure while ensuring reliability and performance. As businesses continue to evolve and demand more from their networks, the MGX 8220 offers a pathway to future-ready communications.
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