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Negotiation method and apparatus for connecting Ethernet port link

A link connection and Ethernet technology, which is applied in the field of negotiation of Ethernet port link connection, can solve the problems of not being able to know the state information, the state mismatch of the two ports, etc., and achieve the effect of preventing data packet loss or link failure

Inactive Publication Date: 2009-01-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims to provide a negotiation method and device for Ethernet port link connection, so as to solve the problem in the prior art that the local port cannot know the state information of the opposite port, which leads to the state mismatch of the two ports

Method used

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  • Negotiation method and apparatus for connecting Ethernet port link
  • Negotiation method and apparatus for connecting Ethernet port link
  • Negotiation method and apparatus for connecting Ethernet port link

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0056] 1. After the negotiation of the two ports that support auto-negotiation is completed, they will choose to run according to the optimal state that they can support. The two ports A and B are running at 100M full-duplex;

[0057] 2. Port B is forced to run at 100M half-duplex, port B starts to send FLP pulses to port A, and LCW (refer to image 3 ) in A2 is set to 1, A0 to A6 is set to 0, and A7 is set to 1;

[0058] 3. After the A port receives the FLP sequence, because the FLP sequence is outside the range allowed by NLP, the A port LINK DOWN and restarts the auto-negotiation;

[0059] 4. Port A also sends FLP pulses containing its support state information to port B, and at the same time detects the FLP pulses sent by port B to find out whether it matches the state of the port;

[0060] 5. If there is A2 in the LCW sent by A port and it is also 1, then A port establishes a connection with B port, and both work at 100M half-duplex;

[0061] 6. If A2 in the LCW sent by...

example 2

[0063] One, two mandatory ports A, B, wherein, A is the port proposed according to the negotiation method of the Ethernet port link connection of the embodiment of the present invention, does not arrange FLP generator in B, suppose A supports 100 full-duplex, B Support 100M half-duplex;

[0064] 2. After power-on, A sends FLP pulses to B (at this time, B detects FLP pulses and is in LINK DOWN state), and B sends NLP pulses to A;

[0065] 3. A can detect the NLP pulse sent by B through the FLP / NLP detector, and finds that it can match the local end (A-side LINK UP), then turns off the FLP generator and starts sending NLP pulses to B;

[0066] 4. After B detects the NLP pulse, it finds a match (LINK UP at the B terminal), so that A and B establish a connection;

[0067] 5. A reports an alarm that the duplex state of B is unknown.

example 3

[0069] One, two mandatory ports A, B, both are the port that the negotiation method that connects to the Ethernet port link according to the embodiment of the present invention proposes, after power-on, send FLP pulse to the opposite end simultaneously;

[0070] 2. Start the FLP / NLP detector, assuming that port A is 100M full-duplex and port B is 100M half-duplex;

[0071] 3. Through FLP detection, it is found that the two states are not the same, and the two ports are LINK DOWN and simultaneously send out a duplex state mismatch alarm.

[0072] It can be seen from the above description that port A can be a non-adaptive port when it is powered on / reset, or it can be changed from an adaptive port to a non-adaptive port during operation.

[0073] Device embodiment

[0074] According to an embodiment of the present invention, a negotiating device for link connection of an Ethernet port is also provided.

[0075] Figure 7 is a block diagram of a negotiating device for an Ether...

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Abstract

The invention discloses a negotiation method connecting Ethernet port links and a device thereof, which is used to negotiate under at least one non-self-consistent port of a first port and a second port to be negotiated, wherein, the method comprises: the first port and the second port send the respective status information to the opposite end; after receiving the status information of the opposite end, the first port and the second port match the respective status information to the status information received and carry out the follow-up treatment according to the matching result. The invention can enable the port of the opposite end to acquire the status information of the non-self-consistent port, and avoid the missing of the data packet or the linkage failure caused by the unmatched ports.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for negotiating an Ethernet port link connection. Background technique [0002] According to the IEEE (Institute of Electrical and Electronics Engineers, Institute of Electrical and Electronics Engineers) 802.3 standard definition, Ethernet ports have two modes: auto-negotiation and forced mode. The difference between the two is that the code stream sent when establishing a physical link connection is different. Wherein, the auto-negotiation port sends a fast link pulse (Fast Link Pulse, FLP for short), and the forced port sends a normal link pulse (Normal Link Pulse, NLP for short). [0003] When a device is set to self-negotiation mode, after power-on, the physical layer of the device will send FLP pulses to convey various status information it supports. If both ports are self-negotiation ports, they will send FLP pulses to each other. At the same time, the FLP / NL...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/10
Inventor 徐晓辉
Owner ZTE CORP
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