Appendix C Firmware Upgrade and Downgrade Procedures

Description of Upgrade/Downgrade Terminology

dspadrxlat

Any upgrade that involves resetting the active ASC card and any downgrade in which the configuration is preserved should compare the number of shelf connections before and after the upgrade/downgrade. This is accomplished by entering the MGX 8220 ASC CLI command.

shelf.1.<34>.ASC.a > dspadrxlat

The most important information is

ConnNumOfValidEntries: <value>

You should not make configuration changes to the shelf while an upgrade or downgrade is in progress. There is a chance that all or part of the configuration changes could be lost.

dsptotals

Any upgrade that involves resetting a stand-alone or primary service module should compare the total number of lines, ports and channels before and after the upgrade/downgrade. This is accomplished by entering the MGX 8220 SM CLI command.

shelf.1.<slot>.<type>.a > dsptotals

The most important information is

total active lines = <value>/<maximumlines>

total active ports = <value>/<maximumports>

total active chans = <value>/<maximumchannels>

You should not make configuration changes to the shelf while an upgrade or downgrade is in progress. There is a chance that all or part of the configuration changes could be lost.

donotupdatestandby

The MGX 8220 active ASC CLI command, donotupdatestandby, is used as part of an ASC graceful firmware upgrade to prevent the active ASC card from downloading firmware or configuration information to a reset standby ASC card. Some ASC firmware releases include the MGX 8220 active ASC CLI command, updatestandby, which can be used to undo the effects of the donotupdatestandby command.

shelf.1.<34>.ASC.a > donotupdatestandby

Compatibility

With any downgrade technique, there is always the issue of compatibility. Any release can be downgraded to any other release, but in many instances configuration information will be lost. Hardware incompatibilities can prevent some downgrades. For example, Releases 2 and 3 service modules require two Flash chips. Release 4 SMs will be shipped with a single Flash chip. A Release 4 shelf containing BNM-E1 cards or service resource module 3T3 cards cannot be downgraded to Release 2 or Release 3. Check the compatibility matrix to determine if a particular downgrade is supported and how it affects configuration loss.

 

Cisco MGX 8220 Installation and Configuration

C-46

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

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Cisco Systems MGX 8220 manual Dspadrxlat, Dsptotals, Donotupdatestandby, Compatibility
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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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