CN104702514A - Improvement method for PIM-DM (Protocol Independent Multicast-Dense Mode) in broadcast multi-hop wireless network - Google Patents
Improvement method for PIM-DM (Protocol Independent Multicast-Dense Mode) in broadcast multi-hop wireless network Download PDFInfo
- Publication number
- CN104702514A CN104702514A CN201310661837.6A CN201310661837A CN104702514A CN 104702514 A CN104702514 A CN 104702514A CN 201310661837 A CN201310661837 A CN 201310661837A CN 104702514 A CN104702514 A CN 104702514A
- Authority
- CN
- China
- Prior art keywords
- pim
- wireless network
- hop wireless
- broadcast multi
- broadcast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention provides an improvement method for deploying a PIM-DM (Protocol Independent Multicast-Dense Mode) in a narrow-band network. The PIM-DM can be applied to a broadcast multi-hop wireless network by modifying a multicast routing protocol. The broadcast multi-hop wireless network, NBMA (Non-Broadcast Multiple Access) and the Ethernet are different in physical characteristics, so that the precedent of the deployment of the PIM-DM on the broadcast multi-hop wireless network is unavailable at present. Through adaptive improvements on the PIM-DM, the PIM-DM can be applied to the broadcast multi-hop wireless network, and an application method is provided for a multicast service application environment in the broadcast multi-hop wireless network. The method has the beneficial effect that the PIM-DM can be applied to the broadcast multi-hop wireless network.
Description
Technical field
The present invention relates to a kind of IP multicast routing protocol PIM-DM improving one's methods in broadcast-type wireless multi-hop network.
Background technology
PIM-DM (Protocol Independent Multicast-Dense Mode) is a kind of multicast routing protocol of intensive topological structure, utilize to flood-pruning machine is made as IP network provides Multicast Routing service.
PIM-DM can adapt to NBMA (Nonbroadcast Multi Access) and Ethernet, but broadcast-type multihop network industry does not work out using method.Its reason is that broadcast-type multi-hop wireless network physical characteristic is complicated, the feature (multicast) of existing NBMA and the feature (supporting broadcast) of Ethernet, but new features-one node having NBMA and Ethernet not to have sends after some node needs relay forwarding and could receive.
If use the method for NBMA neither to support multi-hop characteristic in broadcast-type multi-hop wireless network, do not meet broadcast characteristic again, if use the method for Ethernet not support multi-hop characteristic.
Summary of the invention
Based on the practical problem addressed in background technology, the present invention proposes improving one's methods of a kind of PIM-DM.The method utilizes the combination of following content to complete the use of PIM-DM at broadcast-type multi-hop wireless network.
The method comprises:
1. neighbor uni-cast
Neighbor information is obtained by using PIM-Hello message.
2. multicast forwarding
Perform special RPF (Reverse Path Forwarding) inspection and judge that can multicast data message be forwarded.
3. beta pruning
Upstream router is triggered for the message not meeting rpf check and sends special prune packet, avoid receipt of subsequent multicast data message.
4. assert
In order to (S, a G) data flow can only enter broadcast wireless networks by a node, in broadcast-type multi-hop wireless network, need to assert mechanism.Simultaneously in order to avoid because wireless relay forwards triggering assert process, introduce special mechanism amendment wireless relay this message of notification receiver that E-Packets and do not participate in asserting process.
5. grafting
In order to restart multicast traffic stream, special graft packet is used to reboot multicast traffic stream.
The invention has the beneficial effects as follows: PIM-DM can be made to be utilized in broadcast-type multi-hop wireless network by these methods.
Accompanying drawing explanation
Fig. 1 transmits structure chart.
Embodiment
Embodiment describes from 5 aspects:
1. neighbor uni-cast
The hello message of message format and standard P IM-DM is completely the same, and preventive maintenance time and mode are also consistent, and unique difference is to need the L2 address of maintenance of neighbor (MAC Address that wireless network uses).
2. multicast forwarding
1) rpf check: perform rpf check during receiving multicast data message.Because exist wireless relay forward situation, if receiving interface be radio air interfaces not only.
2) multicast message received from wave point formed and transmits: if having passed rpf check, multicast forward table is formed at forwarding plane, RPF interface will attach gateway ip address and L2 address, and outgoing interface will attach neighbours IP address and L2 address, as shown in Figure 1 transmit structure.
3) wireless relay forwards: if the multicast message received from wave point have passed rpf check, and outgoing interface has neighbours not to be in beta pruning state, needs the CU bit of the TOS field of IP head to be put 1 when wave point sends again.
3. beta pruning
If rpf check failure, sends prune packet.This prune packet sends with unicast fashion, is different from the beta pruning of standard-add message.
Corresponding wave point neighbours are set to Prune state by the multicast router receiving prune packet.If all wave point neighbours are in this wave point of Prune state will be in beta pruning state, no longer forwarding to wave point should (S, G) data flow.
4. assert
If the interface of receiving multicast data message is the outgoing interface of this (S, G) multicast forward table, and the TOS field of IP message is 0, now needs to send at wave point to assert message.Assert and use the message format of standard P IM-DM.
Causing recipient short time RPF interface to switch in order to avoid asserting, forwarding and (S, G) but the recipient not participating in process of asserting should should follow the conduct first-selection gateway that the requirement of asserting selects IP address large when selecting multiple gateway export.
5. grafting
Wave point also supports grafting procedures, uses mode of unicast to send to RPF neighbours with standard P IM-DM unlike the graft packet of wave point.
Claims (4)
1. the improving one's methods an of PIM-DM, is characterized in that PIM-DM can be used in broadcast-type multi-hop wireless network.
2. the feature that PIM-DM according to claim 1 improves is that rpf check not only checks that interface also will check neighbours IP address.
3. the feature that PIM-DM according to claim 1 improves is by utilizing the CU bit of IP head TOS field to carry the mark whether participating in process of asserting during wave point relay forwarding multicast data message.
4. the neighbours selecting IP address maximum when the feature that PIM-DM according to claim 1 improves is that wireless network has multiple gateway can arrive source node are as RPF interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310661837.6A CN104702514B (en) | 2013-12-10 | 2013-12-10 | A kind of improved method of the PIM DM in broadcast-type multi-hop wireless network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310661837.6A CN104702514B (en) | 2013-12-10 | 2013-12-10 | A kind of improved method of the PIM DM in broadcast-type multi-hop wireless network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104702514A true CN104702514A (en) | 2015-06-10 |
| CN104702514B CN104702514B (en) | 2018-01-12 |
Family
ID=53349296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310661837.6A Active CN104702514B (en) | 2013-12-10 | 2013-12-10 | A kind of improved method of the PIM DM in broadcast-type multi-hop wireless network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104702514B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195117A (en) * | 2018-09-25 | 2019-01-11 | 重庆金美通信有限责任公司 | A kind of improved method of the PIM-SM in broadcast-type multi-hop wireless network |
| CN115632979A (en) * | 2022-12-19 | 2023-01-20 | 成都菁蓉联创科技有限公司 | Communication data forwarding method, system and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010034793A1 (en) * | 2000-03-10 | 2001-10-25 | The Regents Of The University Of California | Core assisted mesh protocol for multicast routing in ad-hoc networks |
| CN1493266A (en) * | 2002-11-01 | 2004-05-05 | 法兰西床株式会社 | Massager |
| US20050232281A1 (en) * | 2004-03-24 | 2005-10-20 | Bbnt Solutions Llc | Methods for wireless mesh multicasting |
| US20060250999A1 (en) * | 2005-05-05 | 2006-11-09 | Motorola, Inc. | Method to support multicast routing in multi-hop wireless networks |
| CN101836393A (en) * | 2007-10-23 | 2010-09-15 | 西门子通讯公司 | Method and system for multicast statistic collection |
-
2013
- 2013-12-10 CN CN201310661837.6A patent/CN104702514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010034793A1 (en) * | 2000-03-10 | 2001-10-25 | The Regents Of The University Of California | Core assisted mesh protocol for multicast routing in ad-hoc networks |
| CN1493266A (en) * | 2002-11-01 | 2004-05-05 | 法兰西床株式会社 | Massager |
| US20050232281A1 (en) * | 2004-03-24 | 2005-10-20 | Bbnt Solutions Llc | Methods for wireless mesh multicasting |
| US20060250999A1 (en) * | 2005-05-05 | 2006-11-09 | Motorola, Inc. | Method to support multicast routing in multi-hop wireless networks |
| CN101836393A (en) * | 2007-10-23 | 2010-09-15 | 西门子通讯公司 | Method and system for multicast statistic collection |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195117A (en) * | 2018-09-25 | 2019-01-11 | 重庆金美通信有限责任公司 | A kind of improved method of the PIM-SM in broadcast-type multi-hop wireless network |
| CN109195117B (en) * | 2018-09-25 | 2021-05-11 | 重庆金美通信有限责任公司 | Method for improving PIM-SM (personal information management-SM) in broadcast type multi-hop wireless network |
| CN115632979A (en) * | 2022-12-19 | 2023-01-20 | 成都菁蓉联创科技有限公司 | Communication data forwarding method, system and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104702514B (en) | 2018-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100442776C (en) | Method for realizing multicast translation in three-layer switching unit | |
| EP3226467B1 (en) | Selectively signaling selective tunnels in multicast vpns | |
| CN106470162B (en) | A kind of method of multicasting and device of service message | |
| JP5448211B2 (en) | Wireless communication apparatus, wireless network system, data transfer method, and program | |
| CN102148745B (en) | Method and system for increasing forwarding efficiency of virtual private LAN service network | |
| CN102137000B (en) | Method, device and system for establishing switching multicast distribution tree | |
| Semeria et al. | Introduction to IP multicast routing | |
| CN100583800C (en) | Method for multicast employing single static bidirectional sharing tree in flexible wire type tunnel | |
| CN103916905A (en) | Multicast source registering and multicast path establishing method and device | |
| CN102694714B (en) | Method, device, system and a non-forwarder non-forwarding bridge for message transmission in TRILL network | |
| CN103209134B (en) | Method and equipment for multicast forwarding | |
| CN104539545B (en) | Method for forwarding multicast message and equipment in TRILL network | |
| CA2547946A1 (en) | Route-optimised multicast traffic for a mobile network node | |
| CN105099937B (en) | A kind of determination method and apparatus of PMTU | |
| US8553691B2 (en) | Efficient multicasting in a distributed system architecture | |
| CN104702514A (en) | Improvement method for PIM-DM (Protocol Independent Multicast-Dense Mode) in broadcast multi-hop wireless network | |
| CN101567847B (en) | Method and equipment for sending bootstrapping messages in multi-cast virtual private network | |
| CN102843303B (en) | Multicast message processing method in PIM and device | |
| CN101610200A (en) | Multicast path by changing method and device | |
| CN102413062B (en) | Route selecting method and route equipment | |
| CN109195117B (en) | Method for improving PIM-SM (personal information management-SM) in broadcast type multi-hop wireless network | |
| US11018886B1 (en) | Methods and apparatus for selectively filtering an IP multicast data stream for selected group members of a multicast group | |
| CN101286925B (en) | Method and device for detecting whether repeated multicasting datagram appears | |
| CN102158405B (en) | Method and device for establishing multicast forwarding table entry in bidirectional protocol independent multicast (PIM) network | |
| WO2009064165A2 (en) | A fast packet forwarding engine for scalable routing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |