Method and device for achieving local three-layer finality

A local terminal and local technology, applied in the field of network communication, can solve problems such as bandwidth waste

Active Publication Date: 2013-02-13
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Since the links between the switching devices SWa, SWb, and SWc in each data center are often layer-2 remote links, bandwidth needs to be rented for a fee. Therefore, there is a problem of bandwidth waste in the prior art
[0012] In addition, even in the application scenario where routers in the same data center are interconnected through ordinary Ethernet, the gateway address obtained by the terminal also has a certain degree of randomness, and some traffic needs to be transmitted across the intermediate link.

Method used

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  • Method and device for achieving local three-layer finality
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  • Method and device for achieving local three-layer finality

Examples

Experimental program
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Embodiment 1

[0140] At present, the industry's data centers are often not in one place, but data centers that exist in multiple places are interconnected through the second layer. At this time, the servers inside the data center are exchanged through the second-tier switching equipment, and the outside access is generally accessed through the third-tier.

[0141] Since the data center is a Layer 2 network that has been interconnected, traditional technologies often negotiate through protocols such as VRRP or configure a data center switch as a Layer 3 gateway, and the Layer 3 traffic of other data centers is routed from the data center. When the gateway goes out, the same external access traffic also comes in through the data center gateway and then forwards to the corresponding data center.

[0142] Figure 8 It is a typical networking diagram of an existing data center. In this networking, a VRRP connection is established between the aggregation switch a of data center A and the aggregation ...

Embodiment 2

[0158] This embodiment still takes the three-layer interconnection of the data center as an example. The three-layer interconnection solution is to establish a VRRP / VRRPE networking between the core switches of the data center, and negotiate a currently effective layer three interface according to VRRP on the core switch. The Layer 3 traffic of other data centers exits the core switch, and the same external access traffic also enters through the core switch and then forwards to the corresponding data center.

[0159] Picture 10 It is another typical networking diagram of an existing data center corresponding to this embodiment. In this networking, a VRRP connection is established between the core switch of data center A and the core switch of data center B. The VRRP connection is used to select the core switch of data center A or the core switch of B as the VRRP master, and set the VRRP of the master device The interface serves as the three-tier gateway of the entire data center...

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Abstract

The invention provides a method and device for achieving local three-layer finality. A local gateway has a three-layer finality function, a local terminal goes upstream from the nearby local gateway, the three-layer finality is conducted in local, and only when upstream going faults of the local gateway occur, the local terminal goes upstream from a remote gateway by spanning two layers of links. By means of the technical scheme, virtual router redundancy protocol (VRRP) gateway activation is achieved, flow between the terminal and an external network achieves priority local three-layer finality, and the flow between the terminal and the external network is prevented from being transmitted by spanning a middle link.

Description

Technical field [0001] This application relates to network communication technology, in particular to a method and device for realizing local three-layer termination. Background technique [0002] figure 1 It is a typical networking diagram of the existing VRRP. VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol) is a routing protocol. Multiple VRRP routers form a VRRP group. The MASTER device and SLAVE device are elected. The MASTER device acts as a gateway for Layer 3 forwarding. The SLAVE device is only used for As a backup gateway, it does not participate in Layer 3 forwarding. In VRRP networking, the SLAVE device is always idle, and the utilization of network resources is not high. [0003] VRRPE is an enhanced version of the VRRP protocol. A VRRPE group can be established between multiple devices. The member devices in the group are assigned different virtual MAC addresses, a virtual IP address is corresponded to each virtual MAC address in the gr...

Claims

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Application Information

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IPC IPC(8): H04L12/713H04L45/586
Inventor孙中良郑国良
OwnerNEW H3C TECH CO LTD