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Method for activating VLAN (Virtual Local Area Network) negotiation and ED (edge device)

An edge device and packet technology, applied in the field of network communication, can solve the problem of table entry flapping, and achieve the effect of avoiding flapping

Active Publication Date: 2013-01-02
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a risk in this networking: when the Layer 2 link used for the active VLAN negotiation between IP-A and IP-B fails, the active VLAN negotiation cannot be performed between the two EDs. As a result, all configured extended VLANs 1-100 become active VLANs on IP-A and IP-B, and both IP-A and IP-B will advertise the MAC information of VLAN 1-100 to IP-C of Site B, resulting in IP - The outbound interface of the EVI remote MAC entry on C is constantly switching between EVI link0 and EVI link1, resulting in the flapping of the entry

Method used

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  • Method for activating VLAN (Virtual Local Area Network) negotiation and ED (edge device)
  • Method for activating VLAN (Virtual Local Area Network) negotiation and ED (edge device)
  • Method for activating VLAN (Virtual Local Area Network) negotiation and ED (edge device)

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and examples.

[0045] The main idea of ​​the technical solution for VLAN negotiation proposed by this application is: when the Layer 2 link between this ED and another ED that constitutes a dual-homing ED with this ED is unreachable, through this ED and the other ED, The EVI link between the two EDs sends an EVIIS-IS Hello message for activating VLAN negotiation to the other ED, so that the dual-homing EDs can normally perform activating VLAN negotiation, so that the two EDs between the dual-homing When the layer link is unreachable, the problem of EVI remote MAC entry flapping at the remote site is avoided.

[0046] For the sender of the EVI IS-IS Hello message, when the Layer 2 link between this ED and another ED that constitutes a dual-homing ED with this ED ...

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Abstract

The invention discloses a method for activating VLAN (Virtual Local Area Network) negotiation, which comprises the following steps of judging whether a second link between an ED (Edge Device) and the other ED which forms a dual-homed ED together with the ED can be reached, and sending an EVI (Ethernet Virtualization Internet) IS-IS (Intermediate System - Intermediate System) Hello message used for activating the VLAN negotiation to the other ED through an EVI link between the ED and the other ED when the second link cannot be reached. The invention further discloses the ED. By applying the technical scheme disclosed by the invention, the problem of MAC (Media Access Control) table shocks on the far end of the EVI of a remote site can be avoided.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a method and an edge device for negotiating an activated VLAN. Background technique [0002] With the rapid development of the Internet, the geographical span of the network is getting wider and wider. In order to provide better services, data centers are usually deployed in different places, and virtual machines are often freely migrated between these data centers to achieve load sharing and high reliability. Since the virtual machine migration process is transparent to users and the IP address cannot be changed, it is necessary to implement Layer 2 network interconnection between data centers in different places. [0003] The Ethernet Virtualization Interconnection (EVI, Ethernet Virtualization Interconnection) solution divides the overall network into two parts: the core network (public network) and the site network (private network). Tunnels are estab...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L12/757
Inventor 汪平安杨斌陆璐
Owner NEW H3C TECH CO LTD
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