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Method for fast management link aggregation

IP.com Disclosure Number: IPCOM000042266D
Publication Date: 2005-Feb-03
Document File: 2 page(s) / 16K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for fast management link aggregation. Benefits include improved functionality, improved performance, and improved ease of implementation.

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Method for fast management link aggregation

Disclosed is a method for fast management link aggregation. Benefits include improved functionality, improved performance, and improved ease of implementation.

Background

              Fast management link is an interface between a local area network (LAN) controller and a block multiplexer channel (BMC), which runs management application, such as processor memory interface (PMI). The FML enables the BMC to send and receive packets to/from the LAN at a high bit rate up to the maximum theoretical speed of 8 Mbps.

              The FML is a point-to-point interface where one side is the master and the other side is the slave. Only the master is allowed to initiate transactions on the FML bus. Transmission is a half-duplex operation that reduces the actual bandwidth (see Figure 1).

              A transmission is comprised of the following steps:

1.           BMC sends data via the FML to a LAN controller

2.           LAN controller returns an indication when it receives a packet

3.           BMC initiates a read operation on the FML

              This procedure creates a lot of overhead for the BMC, which is typically implemented as a low CPU power device. Additionally, the FML link is used for status indication from the LAN controller to the BMC. The activity reduces the overall FML performance. However, BMC applications require increasingly higher bit rates on the FML for storage and video redirection implementations.

Description

              The disclosed met...