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Message forwarding method and apparatus

A technology of message forwarding and message encapsulation, applied in the field of computer communication

Active Publication Date: 2018-07-06
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When PE1 receives the non-unicast packet from CE1, PE1 can perform VXLAN encapsulation on the non-unicast packet, and then broadcast the encapsulated non-unicast packet to other PEs. After receiving the VXLAN-encapsulat

Method used

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  • Message forwarding method and apparatus
  • Message forwarding method and apparatus
  • Message forwarding method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1: In Embodiment 1, there are two kinds of VXLAN identities.

[0058] The first type of VXLAN identifier is used to identify the VXLAN network segment. The first type of VXLAN identifier is uniquely corresponding to the VSI. For the convenience of description, it is referred to as the VXLAN identifier of the VSI here.

[0059] The second type of VXLAN identifier is to identify the VXLAN identifier of the CE with multi-homing attribute. In this application, in order to support the format of the VXLAN message, the ES identifier or the ES identifier+VXLAN identifier of the CE with the multi-homing attribute is assigned a unique corresponding VXLAN identifier, that is, the second type of VXLAN identifier. The second type of VXLAN identifier is in one-to-one correspondence with the ES identifier or the ES identifier and the VXLAN identifier. Of course, the VXLAN identifier can also be replaced by the ES identifier of the CE with multi-homing attribute. For the c...

Embodiment 2

[0125] 1. The forwarding of VXLAN packets received from other PEs can be realized through steps 201 to 203.

[0126] Step 201: Receive a first VXLAN packet sent from a first PE.

[0127] In this example, the first CE identifier may be the ES identifier or the ES identifier+VLAN identifier to which the access interface through which the first CE accesses the first PE belongs.

[0128] Step 202: Determine whether the first VXLAN packet carries a first CE identifier, the first CE identifier is used to identify the forwarding CE of the first non-unicast packet encapsulated in the first VXLAN packet, and the forwarding CE The CE is multi-homed to the first PE and the current PE.

[0129] In this example, the PE can determine whether the specified position of the first VXLAN message carries the ES identifier or the ES identifier+VLAN identifier. If the ES identifier or ES identifier+VLAN identifier is carried, the PE can determine that the first VXLAN packet carries the first CE i...

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Abstract

The invention provides a message forwarding method and apparatus. The method comprises the following steps: receiving a first VXLAN message sent from a first PE; determining whether the first VXLAN message carries a first CE identifier, wherein the first CE identifier is used for identifying a forwarding CE of a first non-unicast message packaged in the first VXLAN message, and the forwarding CE is multi-homed to the first PE and a local PE; when it is determined that the first VXLAN message carries the first CE identifier, forwarding the first non-unicast message to a first specified CE in afirst broadcast domain, and not forwarding the first non-unicast message to the PE in the first broadcast domain, wherein the first specified CE comprises a CE that is only connected to the local PE and a CE that uses the local PE as the DF, and does not comprise the forwarding CE. By adoption of the method provided by the invention, a BUM message forwarding loop in VXLAN-based EVPN networking canbe avoided.

Description

technical field [0001] The present application relates to the field of computer communication, in particular to a message forwarding method and device. Background technique [0002] EVPN (Ethernet Virtual Private Network) is a Layer 2 VPN technology. The control plane uses MP-BGP to advertise EVPN routing information, and the data plane uses VXLAN encapsulation to forward packets. When the physical sites of tenants are scattered in different locations, EVPN can provide Layer 2 interconnection for the same subnet of the same tenant based on the existing service provider or enterprise IP network; provide Layer 3 interconnection for different subnets of the same tenant through the EVPN gateway , and provide Layer 3 interconnection with the external network. [0003] EVPN multi-homing is a technology that supports CE (Customer Edge, user network edge device) to connect to multiple PEs (Provider Edge, operator network edge device). PE2 is connected. [0004] When PE1 receives ...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L12/705H04L12/721H04L45/18
CPCH04L12/4633H04L12/4641H04L45/18H04L45/66
Inventor 陈建
Owner NEW H3C TECH CO LTD