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Method, device and system for SSM multicast

A mode group and multicast technology, applied in the field of network communication, can solve the problems of heavy reconfiguration workload, high maintenance cost, bandwidth occupation of users and routers, etc., and achieve the effect of facilitating maintenance and less workload.

Inactive Publication Date: 2008-03-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1. In SSM mode multicast, the SSM Mapping table should be uniformly deployed throughout the network. When a source or a group needs to be changed, the SSMMapping table needs to be reconfigured for all edge routers that select this source or group. In the current network In the system, the number of edge routers is very large, the workload of reconfiguration is heavy, and the maintenance cost is high
[0010] 2. When multiple users share a group and want to use different sources, the bandwidth between the user and the router will be heavily occupied
For example, user 1 and user 2 share a group G1, and the mapping source of G1 has two S11 and S12, if A customizes the service of source S11, clicks the program list of S11, and B customizes the service of source S12, clicks For the program list of S12, the router is connected to the user through the interface. There is no way to identify which user needs to receive the data message of which service source according to the user. Instead, the data message of the source S11 and the data message of the source 12 are delivered. For all users in the group, at this time, the bandwidth between all users in the group and the router is heavily occupied

Method used

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  • Method, device and system for SSM multicast
  • Method, device and system for SSM multicast
  • Method, device and system for SSM multicast

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Referring to Fig. 3 below, embodiment one of the present invention provides the method for realizing SSM mode multicast based on user's authorization information, and this method comprises the following steps:

[0070] Step 301, the user uses the 802.1X protocol for authentication, and sends the online request information EAPOL-Start to the broadband access device BRAS device;

[0071] Step 302, the BRAS device replies the response information EAP-Request to the user, requires the user to send an authentication message, and records the user's MAC address or IP address;

[0072] Step 303, the user sends an EAP-Response message to the BRAS device, carrying the user's authentication information;

[0073] Step 304, BRAS sends request authentication message Access-Request to Radius server, carries the authentication information of user;

[0074] Step 305, the Radius server authenticates the user according to the preset user information, and sends the user's authorization in...

Embodiment 2

[0089]The address mapping table can be statically configured under the domain in the BRAS, and the BRAS configures an address mapping table for each domain according to the authorization information of the domain. The address mapping table only includes the source customized by the domain and the group mapped with the source. The implementation of the present invention Example 2 provides a method for implementing multicast in SSM mode based on domain authorization information, as shown in FIG. 4 .

[0090] Step 401-step 404 of the method are the same as step 301-step 304 in the first embodiment;

[0091] Step 405, the Radius server authenticates the user according to the preset user information, and sends the authorization information Access-Accept of the user to the BRAS after passing the authentication;

[0092] Step 406, the BRAS sends the user authentication success message EAP-Success to the user;

[0093] Step 407, the user uses the agreement of IGMPv2 / MLDv1 version, in...

Embodiment 3

[0101] In the authorization information in the Radius server, the address mapping table is customized according to the user, and under the domain of the BRAS, the address mapping table is configured according to the authorization information of the domain. This embodiment includes the following steps:

[0102] Step 501-step 507 are the same as step 301-step 307 in the first embodiment;

[0103] Step 508, the BRAS obtains the mapping source address S of the group address G according to the address mapping table, and ( * , G) Join message is converted into (S, G) Join message, BRAS has user management function, saves (S, G) message together with user's MAC address or IP address, BRAS equipment has the function of multicast router, according to PIM -SM protocol initiates (S, G) join request message to the upstream router, in the network, the router sends (S, G) join request message to the upstream router in turn according to the PIM-SM protocol, until it is sent to the first node...

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Abstract

The invention discloses a method for realizing the SSM-mode multicast. The method includes that a user launches a participation request message with a multicast group address to a broadband access server; the broadband access server acquires a multicast source address according to the mapping relationship between the pre-saved multicast group address and a multicast source address, the participation request message with the multicast group address is converted into the participation request message with the multicast group address and the multicast source address, and the participation request message is delivered to a multicast router; after the multicast router receives the participation request message, according to which, the data message from the multicast source server is sent down to the broadband access server which sends the data message down to the user. Meanwhile, the invention also provides equipment and a system for realizing the SSM-mode multicast, and using the technical proposal in the invention, the SSM-mode multicast of the authentication information based on users or locations is realized.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method, device and system for realizing SSM mode multicast. Background technique [0002] Multicast refers to the transmission of data packets from one sender to a group of receivers instead of one receiver in the network. There are three main entities in multicast, as shown in Figure 1: 1. Multicast source, to the network 2. The multicast router forwards the multicast message and join message; 3. The receiver sends a join message with the multicast group address to the multicast router and receives the multicast message. On the receiver side, that is, the user side, the protocol used is the IGMP / MLD protocol, which defines the control mechanism for the user to join the specified host group. The user reports the group membership to the shared network where it is located. All enabled hosts in the same network segment The router with the ICMP / MLD function elects a ...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04H1/00
Inventor 顾勤丰
Owner HUAWEI TECH CO LTD
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