Method and system for access user by virtual router redundance protocol

A technology of access users and redundant protocols, applied in the field of communication, can solve problems such as the reduction of the number of access users, the occupation of IP address space, the waste of VRRP resources and router resources, etc., and achieve the reduction of IP address space, reduce waste, and save VRRP resource effect

Inactive Publication Date: 2007-01-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In order to solve the problem of waste of VRRP resources and router resources in the prior art, the problem of a large amount of IP address space being occupied, the problem of reducing the number of access users, and the problem that user

Method used

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  • Method and system for access user by virtual router redundance protocol
  • Method and system for access user by virtual router redundance protocol
  • Method and system for access user by virtual router redundance protocol

Examples

Experimental program
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Embodiment 1

[0062] Such as image 3 As shown, Terminal 1 to Terminal 100 belong to VLAN1 to VLAN100 respectively, and are respectively connected to 100 switches through QinQ. The VLAN tags configured on these 100 switches are 101, ..., 200 respectively. Then connect to router A and router B through switch L, configure the VLANtag on switch L as 300, configure the accessible QinQ VLAN tag range on the interface of router A and router B as 300 / 101-200; The interface on the router in the invention can be an actual physical interface, or a logical sub-interface of the physical interface. Both the physical interface and the logical interface can strip the two-layer QinQ VLAN tag in the message. function; see Figure 4 , the present invention provides a method for accessing users using a virtual router redundancy protocol, firstly performing the initialization steps:

[0063] Step 101: Select a VLAN tag value from the VLAN tag range configured on the interfaces of router A and router B, such ...

Embodiment 2

[0073] When multiple non-QinQ users are connected to the same interface of the router, the system network topology diagram is as follows: Figure 5 As shown, non-QinQ terminal 1 to terminal 100 belong to VLAN1 to VLAN100 respectively, and all terminals are connected to the same switch, and the VLAN tags of these 100 VLANs are configured on the switch as 101, ..., 200 respectively, and the switch communicates with routers A and Router B is connected, see Figure 6 , the present invention also provides another method for accessing users using a virtual router redundancy protocol, firstly performing the initialization steps:

[0074] Step 201: Select a VLAN tag value from the VLAN tag range configured on the interfaces of router A and router B, such as 101 (corresponding to VLAN1), organize router A and router B into a virtual router, that is, create a VRRP instance as follows 100 terminals provide VRRP services, and configure the VLAN tag value on VRRP to the specified VLANtag ...

Embodiment 3

[0084] see Figure 7 , the present invention also provides a system for accessing users using a virtual router redundancy protocol, specifically including a router, a switch, and a terminal,

[0085] Routers include:

[0086] (1) VRRP module, is used for configuring the range of VLAN tag value on the interface of router, is also used for selecting a VLAN tag value in the VLAN tag range to create a VRRP instance and set the virtual MAC address of VRRP;

[0087] All the VLAN tags within the VLAN tag range configured on the interface can be either Layer 1 VLAN tags or Layer 2 VLAN tags;

[0088] (2) The free ARP sending module is used to send a free ARP message containing the virtual MAC address of the VRRP that the VRRP module sets to all VLANs that can be accessed in the VLAN tag range configured by the VRRP module at regular intervals; wherein The fixed time must be less than the aging time of the virtual MAC entry of the switch;

[0089] Switches include:

[0090] (1) The...

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PUM

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Abstract

The invention provides a method and system for connecting users by virtual router redundant protocol (VRRP), belonging to communication technical field. And it provides a method for connecting users by VRRP, comprising the steps of: establishing a VRRP instance; main router sends free ARP messages at regular time and VRRP responds to terminal's ARP request; and it also provides a system for connecting users by VRRP, comprising router, switcher and terminal. And it saves VRRP resources and router hardware resources, reduces waste of IP addresses, increases number of connected users and all users are configured with only one default gateway.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and a system for accessing users by using a virtual router redundancy protocol. Background technique [0002] The QinQ protocol (802.1q in 802.1q, 802.1q tunneling protocol) is a tunneling protocol based on 802.1q. The protocol carries two layers of 802.1q tag (label) messages. Its purpose is to shield the VLAN (Virtual Local Area Network) used internally by users. , virtual local area network), reduce the number of VLANs on the service provider network, break through the limit of 4K VLANs in the 802.1q protocol, and expand the scope of VLANs. [0003] VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol) is a fault-tolerant protocol. It is designed for LANs (such as Ethernet) with multicast or broadcast capabilities. It ensures that when the next-hop router of the host in the LAN fails , can be replaced by another router in time, so as to...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L29/06H04L12/56H04L45/28
Inventor 樊斌
Owner HUAWEI TECH CO LTD
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