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Protocol message forwarding method and device

A protocol message and link layer discovery technology, applied in the field of protocol message forwarding, can solve the problem of indistinguishable forwarding chips

Active Publication Date: 2017-06-27
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, the forwarding chip is still unable to distinguish whether the LLDP protocol message received by the upstream port and the LACP message carry E-TAG. LLDP protocol packets and LACP packets will skip the E-TAG field and directly match the original content of the packet. It is also impossible to send LLDP protocol packets and LACP packets with E-TAG to the terminal. -TAG LLDP protocol packets and LACP packets are sent to the local CPU

Method used

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  • Protocol message forwarding method and device
  • Protocol message forwarding method and device
  • Protocol message forwarding method and device

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Embodiment Construction

[0014] In order to make the above objects, features and advantages of the present application more obvious and comprehensible, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] figure 1 A protocol packet forwarding method according to an embodiment of the present application is shown, and the method is applied to a port expansion device of an expansion bridge. Such as figure 1 As shown, the method specifically includes:

[0016] Step 101, receiving a first protocol message with a first channel label through an upstream port;

[0017] Step 102, receiving a second protocol message with a second channel label through an upstream port;

[0018] Step 103, according to the first expansion port identification carried by the first channel label, find the first expansion port and the classification identification of the expansion port;

[0019] Step 104, searching for the sec...

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Abstract

The invention provides a protocol message forwarding method and device. The method and the device are applied to a port extender of an extended bridge. The method comprises the steps of receiving a first protocol message with a first E-tag through an upstream port; receiving a second protocol message with a second E-tag through the upstream port; searching a first extended port and an extended port class identity according to a first extended port identity carried in the first E-tag; searching a second extended port and the extended port class identity according to a second extended port identity carried in the second E-tag; searching matched first table entry in an access control list according to the extended port class identities, wherein an action of the first table entry is forwarding allowance; sending the first protocol message without the first E-tag through the first extended port; and sending the second protocol message without the second E-tag through the second extended port.

Description

technical field [0001] The present application relates to communication technology, in particular to a method and device for forwarding protocol messages. Background technique [0002] The extended bridge (Extended Bridge) is composed of a control bridge (CB, Controlling Bridge) and a port extender (PE, Port Extender). The CB can be a single network bridge or a network bridge formed by stacking multiple network bridges. [0003] The cascading port of the CB is connected to the upstream port of the PE, and the expansion port of the PE is connected to the physical port of the terminal. In the extended network bridge, the neighbor relationship between CB and PE and the neighbor relationship between CB and terminals are maintained through Link Layer Discovery Protocol (LLDP, Link Layer Discovery Protocol), the link aggregation group between CB and PE and The link aggregation group directly connected between the CB and the terminal is maintained through a Link Aggregation Contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/723H04L12/741H04L12/775H04L45/50H04L45/58H04L45/74
CPCH04L45/507H04L45/583H04L45/74H04L45/745
Inventor 周孟韬
Owner NEW H3C TECH CO LTD
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