Appendix C Firmware Upgrade and Downgrade Procedures

Description of Upgrade/Downgrade Terminology

dspfwrevs

The dspfwrevs command was first introduced in Releases 2.1.25 and 4.0.02 and later in Release 3. Any time ASC firmware is TFTP put to an ASC card running Release 2.1.25 or Release 4.0.02 (or greater), the dwpfwrevs command can be used to ensure that the ASC firmware was successfully TFTP-put to the disk. Any time SM firmware is TFTP-put to an ASC card running Release 4.0.02 (or greater), the dwpfwrevs command can be used to ensure that the SM firmware was successfully TFTP-put to the disk.

Example: shelf.1.<34>.ASC.<as> dspfwrevs

Config

File Name

Card Type

Version

 

 

 

 

—

asc fw

ASC

<version>

Slot-Specific and Card-Type-Specific SM Firmware

MGX 8220 active ASC cards running Release 2 or Release 3 firmware support TFTP-putting slot-specific SM firmware. This means that firmware is TFTP-put to each SM slot individually. The SM firmware is written directly to the SM Flash. Within the upgrade/downgrade techniques, this is denoted as

tftp put <SM_FW_file> AXIS_SM_1_$slot.FW

MGX 8220 active ASC cards running Release 4 firmware support TFTP-putting card-type-specific SM firmware (in addition to slot-specific SM firmware). In Release 4, the SM firmware is written to the ASC disk instead of the SM Flash as in Releases 2 and 3.

In Release 4, a single SM firmware file can be TFTP put to the ASC disk for all SMs of a particular card type. This is denoted as

tftp put <SM_FW_file> AXIS_SM_1_0.FW

Each time an SM is reset, it downloads the SM firmware file based on its card type. MGX 8220 active ASC cards running Release 4 firmware also support TFTP-putting slot-type-specific SM firmware. The SM firmware is still written to the ASC disk.

Slot-specific SM firmware takes precedence over card-type-specific firmware. That is, for a SM of a particular card type in a particular slot, if both card-type-specific and slot-specific firmware files exist, the slot-specific firmware is downloaded to the SM.

A CONFIG.SYS file on the ASC disk keeps track of which SM firmware files are “in effect.” If an SM firmware file (slot-specific or card-type-specific) is not contained within the CONFIG.SYS file, it is not downloaded to an SM.

An SM firmware file is automatically added to the CONFIG.SYS file when it is TFTP-put to the active ASC disk, and when the active ASC disk downloads the SM firmware file to the standby ASC disk. A SM firmware file can be removed from the CONFIG.SYS file entering the delcfgsys command.

The dspfwrevs command can be used to list all of the SM firmware files on the active and standby ASC disks and identify which SM firmware files are contained within the CONFIG.SYS file.

 

Cisco MGX 8220 Installation and Configuration

C-44

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

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Cisco Systems MGX 8220 manual Dspfwrevs, Slot-Specific and Card-Type-Specific SM Firmware
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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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