Appendix C Firmware Upgrade and Downgrade Procedures

Description of Upgrade/Downgrade Terminology

flashStartAddr and flashEndAddr

The flashStartAddr and flashEndAddr commands are simply variables that determine where within Flash memory a file will be written. The ASC flashStartAddr defaults to 0xbfc00000 (ASC backup boot code) and need never be changed (the ASC firmware resides on the ASC disk in Releases 2, 3, and 4). The ASC flashEndAddr defaults to 0xbfc80000.

In Releases 2 and 3, the SM flashStartAddr defaults to 0xbfc40000 (SM firmware) after the SM is reset. The SM flashEndAddr defaults to 0xbfd00000.

In Release 4, the SM flashStartAddr defaults to 0xbfc00000 (SM backup boot code) after the SM is reset. The SM flashEndAddr defaults to 0xbfc80000.

SM backup boot code (Releases 2 and 3):

shelf.1.<slot>.<type>.<as>shellConn

shelf.1.<slot>.<type>.<as>flashStartAddr = 0xbfc00000

shelf.1.<slot>.<type>.<as>flashEndAddr = 0xbfc40000

SM backup boot code (Release 4):

shelf.1.<slot>.<type>.<as>shellConn

shelf.1.<slot>.<type>.<as>flashStartAddr = 0xbfc00000

shelf.1.<slot>.<type>.<as>flashEndAddr = 0xbfc80000

SM firmware (Releases 2 and 3):

shelf.1.<slot>.<type>.<as>shellConn

shelf.1.<slot>.<type>.<as>flashStartAddr = 0xbfc40000

shelf.1.<slot>.<type>.<as>flashEndAddr = 0xbfd00000

resetsys

The MGX 8220 active ASC CLI command, resetsys, is used to reset all the cards in the MGX 8220 shelf.

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

The resetsys command terminates all Telnet sessions. You must re-initiate a Telnet session after an ASC card returns to the active state.

softswitch

The MGX 8220 active ASC CLI command, softswitch, is used to transfer traffic between a primary and secondary SM, while greatly minimizing the traffic loss. The softswitch command is available in Release 4.

shelf.1.<34>.ASC.a > softswitch <primary> <secondary>

shelf.1.<34>.ASC.a > softswitch <secondary> <primary>

 

 

Cisco MGX 8220 Installation and Configuration

 

 

 

 

 

 

 

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

 

 

C-45

 

 

 

 

 

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Cisco Systems MGX 8220 manual FlashStartAddr and flashEndAddr, Resetsys, Softswitch
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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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