System Management: Message Bridging

The following example illustrates how the Send/Get Message and Get Address Info com- mands can be used by the payload software to get the physical location of the board in the shelf:

1The payload software sends the Get Address Info command to the BMR-H8S-AMCc, requesting address information for FRU device 0. Using the SIPL protocol:

[B0 xx 01 00]

2The BMR-H8S-AMCc returns its IPMB address in the Get Address Info reply. In this example, 7216 is the IPMB-0 address of the IPMC.

{B4 00 01 00 00 FF 72 FF 00 01 07]

3The payload software composes a Get Address Info command requesting the responder to provide its addressing information for FRU device 0. The request is composed in the IPMB

format. The responder address is set to 2016 (for the shelf manager). The requester address is set to the value obtained in the previous step.

{20 B0 30 72 00 01 00 8D]

4The payload software forwards the command composed in the previous step to the shelf manager using the Send Message command. The Send/Get Message in SIPL format is:

[18 xx 34 40 20 B0 30 72 00 01 00 8D]

5The BMR-H8S-AMCc firmware sends the Get Address Info request to the shelf manager, waits for a reply to this request, and sends this reply to the payload software in the Send/Get Message response.

[1C 00 34 00 72 B4 DA 20 00 01 00 00 41 82 FF 00 FF 00 1E]

6The payload software extracts the Get Address info reply from the Send/Get Message response and retrieves the physical address of the board from it.

The second message bridging implementation, bridging via LUN 10, allows the payload to receive responses to requests sent to IPMB-0 via the Send Message command with request tracking disabled, as well as receive requests from IPMB-0. To provide this functionality, the ATCA-9305 IPMC places all messages coming to LUN 10 from IPMB-0 in a dedicated Receive Message Queue, and those messages are processed by the payload instead of the IPMC firmware. To read messages from the Receive Message Queue, the payload software uses the standard Get Message command. The payload software is notified about messages coming to LUN 10 via the Get Status command of the SIPL protocol and the payload notifi- cation mechanism, or, if the LPC/KCS-based Payload Interface is used, using the KCS inter- rupt. The Receive Message Queue of the ATCA-9305 IPMC is limited to 128 bytes, which is sufficient for storing at least three IPMB messages, but may be not enough for a larger num- ber of messages. Taking this into account, the payload software must read messages from the queue as fast as possible, caching them on the on-carrier payload side for further han-

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ATCA-9305 specifications

The Emerson ATCA-9305 is a high-performance AdvancedTCA (ATCA) chassis designed to meet the demanding requirements of telecommunications and IT infrastructure. With a focus on scalability, reliability, and flexibility, this equipment is ideal for service providers and enterprises looking to deploy robust applications in a variety of environments.

One of the main features of the ATCA-9305 is its support for high-density blade configurations. The chassis can accommodate up to 14 ATCA blades, enabling the deployment of powerful processing units, communication modules, and storage solutions. This level of density not only maximizes space but also minimizes power consumption, which is crucial for reducing operational costs in large-scale deployments.

The ATCA-9305 is built with a focus on advanced thermal management and redundancy. It employs a sophisticated cooling architecture that ensures optimal airflow across the chassis, preventing overheating during operation. Additionally, the chassis features hot-swappable fans and power supplies, which means that components can be replaced without interrupting the overall system performance. This capability enhances uptime and reliability, which is essential for mission-critical applications.

Another notable characteristic of the ATCA-9305 is its support for various interconnect technologies. The chassis provides robust backplane options that facilitate high-bandwidth communication between blades. It supports Ethernet, PCI Express, and Serial RapidIO, allowing for seamless integration with existing infrastructure and future technologies. This flexibility enables organizations to adapt to changing market demands and technological advancements.

Security features are also a prominent aspect of the ATCA-9305. The chassis incorporates hardware-based security modules that enhance data integrity and protect sensitive information. This is particularly important for service providers who must adhere to strict regulatory compliance standards.

In terms of management and monitoring, the ATCA-9305 is equipped with advanced management capabilities. It supports AdvancedTCA Management Interface (IPMI) and other monitoring protocols, allowing administrators to easily oversee the health and performance of the entire system. This level of visibility aids in proactive maintenance and troubleshooting, effectively reducing downtime.

In conclusion, the Emerson ATCA-9305 is a powerful and versatile chassis that stands out due to its high-density configuration, advanced thermal management, diverse interconnect technology support, robust security features, and comprehensive management capabilities. Its design is tailored for the evolving needs of telecommunications and data center environments, making it a valuable asset for any organization looking to enhance its infrastructure.