GD82559ER — Networking Silicon

8.2Statistical Counters

The 82559ER provides information for network management statistics by providing on-chip statistical counters that count a variety of events associated with both transmit and receive. The counters are updated by the 82559ER when it completes the processing of a frame (that is, when it has completed transmitting a frame on the link or when it has completed receiving a frame). The Statistical Counters are reported to the software on demand by issuing the Dump Statistical Counters command or Dump and Reset Statistical Counters command in the SCB Command Unit Command (CUC) field.

 

Table 14. 82559ER Statistical Counters

 

 

 

ID

Counter

Description

 

 

 

 

 

 

0

Transmit Good Frames

This counter contains the number of frames that were

 

 

transmitted properly on the link. It is updated only after the

 

 

actual transmission on the link is completed, not when the

 

 

frame was read from memory as is done for the Transmit

 

 

Command Block status.

 

 

 

4

Transmit Maximum Collisions

This counter contains the number of frames that were not

 

(MAXCOL) Errors

transmitted because they encountered the configured

 

 

maximum number of collisions.

 

 

 

8

Transmit Late Collisions (LATECOL)

This counter contains the number of frames that were not

 

Errors

transmitted since they encountered a collision later than the

 

 

configured slot time.

 

 

 

12

Transmit Underrun Errors

A transmit underrun occurs because the system bus cannot

 

 

keep up with the transmission. This counter contains the

 

 

number of frames that were either not transmitted or

 

 

retransmitted due to a transmit DMA underrun. If the 82559ER

 

 

is configured to retransmit on underrun, this counter may be

 

 

updated multiple times for a single frame.

 

 

 

16

Transmit Lost Carrier Sense (CRS)

This counter contains the number of frames that were

 

 

transmitted by the 82559ER despite the fact that it detected

 

 

the de-assertion of CRS during the transmission.

 

 

 

20

Transmit Deferred

This counter contains the number of frames that were deferred

 

 

before transmission due to activity on the link.

 

 

 

24

Transmit Single Collisions

This counter contains the number of transmitted frames that

 

 

encountered one collision.

 

 

 

28

Transmit Multiple Collisions

This counter contains the number of transmitted frames that

 

 

encountered more than one collision.

 

 

 

32

Transmit Total Collisions

This counter contains the total number of collisions that were

 

 

encountered while attempting to transmit. This count includes

 

 

late collisions and frames that encountered MAXCOL.

 

 

 

36

Receive Good Frames

This counter contains the number of frames that were

 

 

received properly from the link. It is updated only after the

 

 

actual reception from the link is completed and all the data

 

 

bytes are stored in memory.

 

 

 

40

Receive CRC Errors

This counter contains the number of aligned frames discarded

 

 

because of a CRC error. This counter is updated, if needed,

 

 

regardless of the Receive Unit state. The Receive CRC Errors

 

 

counter is mutually exclusive of the Receive Alignment Errors

 

 

and Receive Short Frame Errors counters.

 

 

 

44

Receive Alignment Errors

This counter contains the number of frames that are both

 

 

misaligned (for example, CRS de-asserts on a non-octal

 

 

boundary) and contain a CRC error. The counter is updated, if

 

 

needed, regardless of the Receive Unit state. The Receive

 

 

Alignment Errors counter is mutually exclusive of the Receive

 

 

CRC Errors and Receive Short Frame Errors counters.

 

 

 

62

Datasheet

Page 68
Image 68
Intel GD82559ER manual ER Statistical Counters, Counter Description

GD82559ER specifications

The Intel GD82559ER is a highly regarded network interface controller (NIC) designed for use in various computing environments, primarily for stable connectivity in both desktop and server applications. Released as part of the 82559 family of Ethernet controllers, the GD82559ER features advanced technologies that enhance performance, reliability, and manageability.

One of the standout features of the 82559ER is its ability to support both 10/100 Mbps Ethernet. This dual capability allows the controller to operate in a wide range of network settings, making it adaptable to legacy systems while also providing support for modern Ethernet standards. This versatility is crucial for organizations looking to maintain operational effectiveness without the need for immediate upgrades to their existing infrastructure.

The GD82559ER employs a PCI interface, which allows it to connect with various devices and motherboards easily, making it a go-to choice for manufacturers aiming for integration in their systems. It also includes features like Auto-Negotiation, enabling the NIC to automatically detect and select the appropriate speed and duplex mode for optimal performance. This capability is essential in dynamic networking environments, where devices from various generations coexist.

Power management is another critical aspect of the GD82559ER. The controller supports advanced power-saving features like PCI Power Management, reducing energy consumption during low-usage periods. This not only contributes to lower operational costs but also aligns with modern eco-friendly initiatives in technology.

Additionally, the GD82559ER comes equipped with advanced diagnostics and monitoring capabilities. This enhances the network's manageability by allowing administrators to track performance metrics and diagnose issues effectively. Through its onboard diagnostics, the controller aids in ensuring a stable network connection, allowing for timely interventions when issues arise.

The controller is also designed with a robust architecture that supports various operating systems, facilitating a broad implementation across different platforms. As a result, the GD82559ER has become a reliable option for system builders and enterprises focused on building dependable networking solutions.

Overall, the Intel GD82559ER is a versatile, high-performance network interface controller that continues to serve as a foundational component for computer systems that require efficient, reliable networking capabilities. Its combination of technologies and features makes it a popular choice in diverse computing environments.