Cisco Technology, Inc.

Bruce B Weller

Kaartik Viswanath

Brian A Arnold

Pritesh N Patel

Jeffrey Lee

Floyd H Gerhardt

Snigdhendu Mukhopadhyay

Stewart Findlater

Bradley D Erickson

Chris Desiniotis

Sandeep Arvind Patel

Scott M Simon

Miodrag Popovic

Kenneth Swanson

Selecting a profile for an interface of a network device includes accessing profile sequences, where each profile sequence corresponds to an interface. Each profile sequence includes profiles that provide parameters for communicating data. The following are repeated for a profile sequence for an interface until a link satisfies a sequence criterion or until a last profile of the profile sequence is reached to select a profile for the interface. A current profile is accessed, and a link for the interface is initiated according to the current profile. Whether the link for the interface satisfies the sequence criterion is determined. A next profile of the profile sequence is accessed if the link does not satisfy the sequence criterion, and the current profile is selected if the link satisfies the sequence criterion. Data is communicated according to the selected profile.

Determining a profile for an interface of a network device

A system and method for MAC-PHY rate matching combines carrier sense signal and rate matching techniques to implement close loop rate matching. An adapter entity responds to each carrier sense deferral to throttle the MAC until rate matching is achieved.

Closed loop method and apparatus for throttling the transmit rate of an ethernet media access controller

Selecting a profile for an interface of a network device includes accessing profile sequences, where each profile sequence corresponds to an interface. Each profile sequence includes profiles that provide parameters for communicating data. The following are repeated for a profile sequence for an interface until a link satisfies a sequence criterion or until a last profile of the profile sequence is reached to select a profile for the interface. A current profile is accessed, and a link for the interface is initiated according to the current profile. Whether the link for the interface satisfies the sequence criterion in accordance with the margin set is determined. A next profile of the profile sequence is accessed if the link does not satisfy the sequence criterion in accordance with the margin set, and the current profile is selected if the link satisfies the sequence criterion. Data is communicated according to the selected profile.

Selecting a profile for an interface of a network device according to a margin

An SFP module provides either a 1000Base-X or SGMII interface protocol to a host and provides a 1000Base-T media dependent interface (MDI). If the SFP module is coupled a host that only implements the 1000Base-X protocol then the SFP module translates the 1000Base-X protocol to the 1000Base-T protocol so that the host MAC sees the 1000Base-T SFP module as if it were an optical transceiver. If the host implements SGMII then the SFP performs auto-negotiation of speed and communicates with the host implement data transfer at a selected rate, e.g., 10, 100, or 1000 Mbps.

10/100/1000Base-T small-form-factor-pluggable module

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Bruce B Weller