CN102158405A - Method and device for establishing multicast forwarding table entry in bidirectional protocol independent multicast (PIM) network - Google Patents
Method and device for establishing multicast forwarding table entry in bidirectional protocol independent multicast (PIM) network Download PDFInfo
- Publication number
- CN102158405A CN102158405A CN2011100802526A CN201110080252A CN102158405A CN 102158405 A CN102158405 A CN 102158405A CN 2011100802526 A CN2011100802526 A CN 2011100802526A CN 201110080252 A CN201110080252 A CN 201110080252A CN 102158405 A CN102158405 A CN 102158405A
- Authority
- CN
- China
- Prior art keywords
- list item
- multicast
- protocol massages
- message
- pim
- 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
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method and device for establishing a multicast forwarding table entry in a bidirectional protocol independent multicast (PIM) network. In the method, a directly-connected device of a bidirectional PIM multicast source receives first protocol messages from the multicast source aiming at a multicast group G; a table entry (*,G) is established in accordance with the protocol messages; an outbound interface of the table entry is the RPF interface of the directly-connected device, and second protocol messages are sent from the RPF interface along an RP direction; the second protocol messages are used for indicating upstream equipment to establish a table entry (*,G), and an outbound interface of the table entry is the RPF interface of the upstream equipment; and the first protocol messages are sent before the bidirectional PIM multicast source sends multicast streams aiming at the multicast group G. According to the method and device provided by the invention, the bidirectional PIM forwarding efficiency is improved.
Description
Technical field
The present invention relates to technical field of multicast, be specifically related to multicast forwarding list item method for building up and equipment in bidirectional protocol independent multicast (PIM, the ProtocolIndependent Multicast) network.
Background technology
Bidirectional protocol independent multicast (PIM, Protocol Independent Multicast) agreement hypothesis multicast source also is the recipient simultaneously, is applicable to scenes such as video conference.But in the actual networking, multicast source not necessarily has the recipient to the path of point (RP, Rendezvous Point), but can transmit smoothly for flow, and multicast source needs to set up the corresponding forwarding-table item ability forwarding multicasting flow of organizing to the path of RP.
Fig. 1 has provided the networking exemplary plot of an existing bidirectional pim, as shown in Figure 1, there are 2 recipients in the networking, according to the bidirectional pim agreement, (*, G) reverse path of list item is transmitted (RPF, Reverse Path Forwarding) interface for arriving the nearest interface of RP, multicast data flow can at first send to RP, is transmitted to the recipient again.The recipient to RP (*, G) list item is joined message by Internet Group Management Protocol (IGMP, Internet Group Management Protocol) and PIM and trigger to set up, and is used for forwarding multicasting stream.The sender also needs by (*, G) list item comes forwarding multicasting stream, can not adopt the mode of unicast of traditional PIM-sparse mode (SM, Sparse Mode) and PIM-dense mode (DM, Dense Mode), influences efficient to RP.
Industry adopts the mode of stream driving to set up (*, G) list item at multicast source to the link of RP at present.The stream type of drive can cause bigger impact to equipment, and could transmit after list item is set up, and needs the equipment buffer memory to wait for, has the possibility of time-delay and packet loss.
Summary of the invention
The invention provides multicast forwarding list item method for building up and equipment in the bidirectional pim network, to improve the bidirectional pim forward efficiency.
Technical scheme of the present invention is achieved in that
Multicast forwarding list item method for building up in a kind of bidirectional protocol independent multicast PIM network, this method comprises:
First protocol massages that send in the direct-connected equipment receiving group source of bidirectional pim multicast source at multicast group G, set up (* according to this protocol massages, G) list item, the outgoing interface of this list item is that the reverse path of direct-connected equipment is transmitted the RPF interface, and send second protocol massages to point RP direction from described RPF interface, described second protocol massages is used to indicate upstream equipment foundation, and (*, G) list item, the outgoing interface of this list item are the RPF interface of upstream equipment; Wherein, first protocol massages is that the bidirectional pim multicast source sends before the multicast data flow that sends at described multicast group G.
Described first protocol massages is: the IGMPv1 report message, wherein, the Unused field of this message represents that this message is used to indicate direct-connected equipment to set up (*, G) list item that outgoing interface is the RPF interface.
Described second protocol massages is: PIM joins message, and wherein, second Reserved field of this message represents that this message is used to indicate upstream equipment to set up (*, G) list item that outgoing interface is the RPF interface.
Multicast forwarding list item method for building up in a kind of bidirectional pim network, this method comprises:
Second protocol massages that the direct-connected equipment of upstream equipment reception bidirectional pim multicast source is sent at multicast group G, set up (* according to this protocol massages, G) list item, the outgoing interface of this list item are the RPF interface of this upstream equipment, and transmit second protocol massages from described RPF interface to the RP direction.
Described second protocol massages is: PIM joins message, and wherein, second Reserved field of this message represents that this message is used to indicate described upstream equipment to set up (*, G) list item that outgoing interface is the RPF interface.
A kind of direct-connected equipment of bidirectional pim multicast source, on the path between bidirectional pim multicast source and the RP, this equipment comprises:
Protocol massages transceiver module: receive first protocol massages that the bidirectional pim multicast source is sent at a multicast group G, this message is sent to list item set up module, RPF interface from self sends second protocol massages to the RP direction simultaneously, described second protocol massages is used to indicate upstream equipment to set up (*, G) list item, the outgoing interface of this list item are the RPF interface of upstream equipment; Wherein, first protocol massages is that the bidirectional pim multicast source sends before the multicast data flow that sends at described multicast group G;
List item is set up module: receive first protocol massages that the protocol massages transceiver module is sent, (*, G) list item, the outgoing interface of this list item are the RPF interface of this equipment according to this message foundation.
A kind of upstream equipment, on the direct-connected equipment and the path between the RP of bidirectional pim multicast source, this upstream equipment comprises:
Protocol massages transceiver module: receive second protocol massages, this message is sent to list item set up module, transmit second protocol massages from the RPF interface of self to the RP direction simultaneously at a multicast group G from the direct-connected device orientation of bidirectional pim multicast source;
List item is set up module: receive second protocol massages that the protocol massages transceiver module is sent, (*, G) list item, the outgoing interface of this list item are the RPF interface of this equipment according to this protocol massages foundation.
A kind of bidirectional pim multicast source, comprise: first module, be used for before the multicast data flow that will send at a multicast group G, send first protocol massages at this multicast group G, this message is used to indicate the receiving equipment of this message to set up (*, G) list item that outgoing interface is the RPF interface.
Compared with prior art, among the present invention, the bidirectional pim multicast source sends first protocol massages at multicast group G earlier before sending at the multicast data flow of a multicast group G, set up (* with the equipment that triggers between this multicast source and the RP, G) list item, thereby avoided of the periodic impact of mass data message, and do not needed the equipment buffer memory to wait for, reduced the possibility of time-delay and packet loss equipment; Simultaneously by control message rather than multicast data flow set up (*, G) list item make that the foundation of list item is more efficient, controlled, when unit exception, also can quicken the removing of list item.
Description of drawings
Fig. 1 is the networking exemplary plot of existing bidirectional pim;
The flow chart of multicast forwarding list item method for building up in the bidirectional pim network that Fig. 2 provides for the embodiment of the invention;
The composition diagram of the direct-connected equipment of the bidirectional pim multicast source that Fig. 3 provides for the embodiment of the invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The flow chart of multicast forwarding list item method for building up in the bidirectional pim network that Fig. 2 provides for the embodiment of the invention, as shown in Figure 2, its concrete steps are as follows:
Step 201: the bidirectional pim multicast source sends IGMPv1 report (Report) message before the multicast data flow that sends at a multicast group G, carry multicast group G address in this message, and the IGMP that carries the bidirectional pim multicast source simultaneously adds indication.
In the present embodiment, multicast source is starting a bidirectional pim application, as: when starting a video conference, just send an IGMPv1Report message immediately.
The form of IGMPv1Report message is as follows:
0?1?2?3?4?5?6?7?0?1?2?3?4?5?6?7?0?1?2?3?4?5?6?7?0?1?2?3?4?5?6?7?0?1?2?3?4?5?6?7?0
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
| Version| Type| Unused| Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
| Group?Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
In the present embodiment, the implication and the value of each field are as follows:
Version:IGMP version number, here, value is 1, is expressed as IGMPv1;
Type: type of message, here, value is 0x2, is expressed as query message;
Unused: this field for not using field, in the present embodiment, uses this field to represent that the IGMP of bidirectional pim multicast source adds in existing IGMPv1 Report message, and here, but value is 0x07.
Step 202:IGMPv1 Report message arrives the direct-connected equipment of multicast source, this equipment is set up (* according to this message, G) list item, simultaneously self RPF interface is added to the outgoing interface of this list item, and the attribute of this outgoing interface is made as IGMPv1*, and send PIM from self RPF interface and add (Join) message, PIM Join message carries multicast group G address.
Here the attribute of outgoing interface being made as IGMPv1* is in order to distinguish with the attribute of existing list item outgoing interface, if do not distinguish certainly, with the attribute of existing outgoing interface be provided with consistent also no problem.
In the present embodiment,, need make amendment to PIM Join message for PIM Join message is distinguished mutually with existing P IM Join message, specific as follows:
The form of PIM Join message is as follows:
0?1?2?3?4?5?6?7?0?1?2?3?4?5?6?7?0?1?2?3?4?5?6?7?0?1?2?3?4?5?6?7?0?1?2?3?4?5?6?7?0
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
| PIM?Ver?| Type | Reserved | Checksum |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
| Encoded-Unicast-Upstream?Neighbor?Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
| Reserved | Num?groups | Holdtime |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
In the present embodiment, use second Reserved field promptly, the Reserved field before the Num groups represents that this PIM Join message is to be triggered by the IGMPv1 Report message of expanding, and here, but value is 0x07.
Step 203: the upstream equipment of the direct-connected equipment of multicast source receives PIM Join message, sets up according to this message that (*, G) list item are added to self RPF interface the outgoing interface of this list item simultaneously, and the attribute of this outgoing interface is made as PIM
*, and sending PIM Join message from self RPF interface, the PIMJoin message carries multicast group G address.
Here " upstream equipment of the direct-connected equipment of multicast source " refer to from the direct-connected equipment of multicast source to RP by way of first equipment.
For from the direct-connected equipment of multicast source to RP by way of arbitrary equipment, after this equipment receives the PIMJoin message, all can carry out the processing of step 203, PIM Join message finally can arrive RP.
Certainly, here the attribute of the attribute of outgoing interface and existing outgoing interface be provided with consistent also no problem.
PIM Join message in this step is identical with step 202, and second Reserved field list need be shown this message is to be triggered by the IGMPv1 Report message of expanding, but value is 0x07.
Step 204:RP receives PIM Join message.
Using IGMPv1 Report message and PIM Join message in the present embodiment, to indicate the adding of multicast source be a kind of more excellent execution mode, can reach reasonable fusion with existing multicast protocol.If only from realizing purpose of the present invention, also can not use IGMPv1 Report message and PIMJoin message, as long as the equipment that this message can be received this message is discerned, and according to this message foundation with RPF be outgoing interface (*, G) list item gets final product.So, can finish above-mentioned effect by self-defined a kind of protocol massages fully.
After this, after multicast source sends multicast data flow at multicast group G, the equipment of multicast source to the RP path just according to foundation (*, G) list item carries out the forwarding of multicast data flow.Particularly, when the multicast data flow that multicast source sends arrives the equipment of each operation bidirectional pim agreement of upstream, these equipment according to multicast group G correspondence (*, the G) outgoing interface of list item forwards multicast data flow from the RPF interface, final multicast data flow has arrived RP.
Existing employing stream type of drive generates bidirectional pim, and (*, G) under the situation of list item, if multicast source is hung up unusually, (*, G) list item need wait for that 210s is aging.In the embodiment of the invention, (if multicast source is hung up unusually, (*, G) ageing time of list item can shorten to 120s for *, G) list item to use the generation of IGMPv1 message.
The composition diagram of the direct-connected equipment of the bidirectional pim multicast source that Fig. 3 provides for the embodiment of the invention, this direct-connected equipment is on the path between bidirectional pim multicast source and the RP, as shown in Figure 3, it mainly comprises: protocol massages transceiver module 31, list item are set up module 32, list item memory module 33 and circulation and are sent out module 34, wherein:
Protocol massages transceiver module 31: the bidirectional pim multicast source IGMP at a multicast group G that receives from bidirectional pim multicast source joins message, this message is sent to list item set up module 32, sending bidirectional pim multicast source PIM from the RPF interface of this equipment simultaneously joins message, wherein, described bidirectional pim multicast source IGMP joins message and sends before the multicast data flow that sends at described multicast group G for the bidirectional pim multicast source.
List item is set up module 32: the bidirectional pim multicast source IGMP at multicast group G that reception protocol massages transceiver module 31 is sent joins message, set up (* according to this message, G) list item, the RPF interface of this equipment is added to the outgoing interface of this list item, with (*, G) list item is saved in the list item memory module 33.
List item memory module 33: storage (*, G) list item.
A module 34 is sent out in circulation: receive the multicast data flow that the bidirectional pim multicast source is sent, in list item memory module 33, search this multicast data flow correspondence ((*, the G) outgoing interface of list item forwards this multicast data flow according to this for *, G) list item.
Below provide the composition of the upstream equipment that the embodiment of the invention provides, this upstream equipment is on the direct-connected equipment and the path between the RP of bidirectional pim multicast source, this upstream equipment mainly comprises: protocol massages transceiver module, list item are set up module, list item memory module and circulation and are sent out module, wherein:
The protocol massages transceiver module: reception joins message from the bidirectional pim multicast source PIM at a multicast group G of the direct-connected device orientation of bidirectional pim multicast source, this message is sent to list item set up module, transmits this message from the RPF interface of this equipment simultaneously.
List item is set up module: the bidirectional pim multicast source PIM at multicast group G that reception protocol massages transceiver module is sent joins message, set up according to this message that (*, G) list item are added to the RPF interface of this equipment the outgoing interface of this list item, with (*, G) list item is saved in the list item memory module.
List item memory module: storage (*, G) list item.
A module is sent out in circulation: receive the multicast data flow that the bidirectional pim multicast source is sent, in the list item memory module, search this multicast data flow correspondence ((*, the G) outgoing interface of list item forwards this multicast data flow according to this for *, G) list item.
Below provide the composition of the bidirectional pim multicast source that the embodiment of the invention provides, this bidirectional pim multicast source comprises: first module, be used for before the multicast data flow that will send at a multicast group G, send a bidirectional pim multicast source and join message at this multicast group G.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (8)
1. multicast forwarding list item method for building up in the bidirectional protocol independent multicast PIM network is characterized in that this method comprises:
First protocol massages that send in the direct-connected equipment receiving group source of bidirectional pim multicast source at multicast group G, set up (* according to this protocol massages, G) list item, the outgoing interface of this list item is that the reverse path of direct-connected equipment is transmitted the RPF interface, and send second protocol massages to point RP direction from described RPF interface, described second protocol massages is used to indicate upstream equipment foundation, and (*, G) list item, the outgoing interface of this list item are the RPF interface of upstream equipment; Wherein, first protocol massages is that the bidirectional pim multicast source sends before the multicast data flow that sends at described multicast group G.
2. method according to claim 1 is characterized in that, described first protocol massages is: the IGMPv1 report message, wherein, the Unused field of this message represents that this message is used to indicate direct-connected equipment to set up (*, G) list item that outgoing interface is the RPF interface.
3. method according to claim 1 is characterized in that, described second protocol massages is: PIM joins message, and wherein, second Reserved field of this message represents that this message is used to indicate upstream equipment to set up (*, G) list item that outgoing interface is the RPF interface.
4. multicast forwarding list item method for building up in the bidirectional pim network is characterized in that this method comprises:
Second protocol massages that the direct-connected equipment of upstream equipment reception bidirectional pim multicast source is sent at multicast group G, set up (* according to this protocol massages, G) list item, the outgoing interface of this list item are the RPF interface of this upstream equipment, and transmit second protocol massages from described RPF interface to the RP direction.
5. method according to claim 4, it is characterized in that described second protocol massages is: PIM joins message, wherein, second Reserved field of this message represents that this message is used to indicate described upstream equipment to set up (*, G) list item that outgoing interface is the RPF interface.
6. the direct-connected equipment of a bidirectional pim multicast source on the path between bidirectional pim multicast source and the RP, is characterized in that, this equipment comprises:
Protocol massages transceiver module: receive first protocol massages that the bidirectional pim multicast source is sent at a multicast group G, this message is sent to list item set up module, RPF interface from self sends second protocol massages to the RP direction simultaneously, described second protocol massages is used to indicate upstream equipment to set up (*, G) list item, the outgoing interface of this list item are the RPF interface of upstream equipment; Wherein, first protocol massages is that the bidirectional pim multicast source sends before the multicast data flow that sends at described multicast group G;
List item is set up module: receive first protocol massages that the protocol massages transceiver module is sent, (*, G) list item, the outgoing interface of this list item are the RPF interface of this equipment according to this message foundation.
7. upstream equipment on the direct-connected equipment and the path between the RP of bidirectional pim multicast source, is characterized in that this upstream equipment comprises:
Protocol massages transceiver module: receive second protocol massages, this message is sent to list item set up module, transmit second protocol massages from the RPF interface of self to the RP direction simultaneously at a multicast group G from the direct-connected device orientation of bidirectional pim multicast source;
List item is set up module: receive second protocol massages that the protocol massages transceiver module is sent, (*, G) list item, the outgoing interface of this list item are the RPF interface of this equipment according to this protocol massages foundation.
8. bidirectional pim multicast source, it is characterized in that, comprise: first module, be used for before the multicast data flow that will send at a multicast group G, send first protocol massages at this multicast group G, this message is used to indicate the receiving equipment of this message to set up (*, G) list item that outgoing interface is the RPF interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110080252.6A CN102158405B (en) | 2011-03-31 | 2011-03-31 | Method and device for establishing multicast forwarding table entry in bidirectional protocol independent multicast (PIM) network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110080252.6A CN102158405B (en) | 2011-03-31 | 2011-03-31 | Method and device for establishing multicast forwarding table entry in bidirectional protocol independent multicast (PIM) network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102158405A true CN102158405A (en) | 2011-08-17 |
| CN102158405B CN102158405B (en) | 2014-06-11 |
Family
ID=44439602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110080252.6A Active CN102158405B (en) | 2011-03-31 | 2011-03-31 | Method and device for establishing multicast forwarding table entry in bidirectional protocol independent multicast (PIM) network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102158405B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512762A (en) * | 2018-03-28 | 2018-09-07 | 新华三技术有限公司 | A kind of method of realizing group broadcasting and device |
| CN112822097A (en) * | 2019-11-15 | 2021-05-18 | 华为技术有限公司 | Message forwarding method, first network device and first device group |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070091891A1 (en) * | 2005-10-26 | 2007-04-26 | Zwiebel John M | Bidirectional multicast protocol with upstream and downstream join messages |
| CN101309163A (en) * | 2008-07-15 | 2008-11-19 | 杭州华三通信技术有限公司 | Method and apparatus for PIM SM protocol supporting automatic smoothing of multicast flow |
| CN101867528A (en) * | 2010-06-25 | 2010-10-20 | 北京星网锐捷网络技术有限公司 | Multicast service processing method and device |
-
2011
- 2011-03-31 CN CN201110080252.6A patent/CN102158405B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070091891A1 (en) * | 2005-10-26 | 2007-04-26 | Zwiebel John M | Bidirectional multicast protocol with upstream and downstream join messages |
| CN101309163A (en) * | 2008-07-15 | 2008-11-19 | 杭州华三通信技术有限公司 | Method and apparatus for PIM SM protocol supporting automatic smoothing of multicast flow |
| CN101867528A (en) * | 2010-06-25 | 2010-10-20 | 北京星网锐捷网络技术有限公司 | Multicast service processing method and device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512762A (en) * | 2018-03-28 | 2018-09-07 | 新华三技术有限公司 | A kind of method of realizing group broadcasting and device |
| CN108512762B (en) * | 2018-03-28 | 2021-02-26 | 新华三技术有限公司 | Multicast implementation method and device |
| CN112822097A (en) * | 2019-11-15 | 2021-05-18 | 华为技术有限公司 | Message forwarding method, first network device and first device group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102158405B (en) | 2014-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102137000B (en) | Method, device and system for establishing switching multicast distribution tree | |
| CN101291240B (en) | Multicast flow transmission method and system | |
| CN102148745B (en) | Method and system for increasing forwarding efficiency of virtual private LAN service network | |
| CN102075422B (en) | Multicast management method and two-layer equipment | |
| CN101448003B (en) | Method and device for processing IGMP message | |
| CN100417141C (en) | Group broadcasting business realizing method | |
| CN1988507B (en) | Method, system and router for repeating multicast data | |
| CN104518973A (en) | SDN (software defined network) environment based reliable multicast data transport method | |
| CN101252529A (en) | Method and apparatus for forwarding multicast message | |
| CN101631043A (en) | Multicast fault recovery method, multicast router and system | |
| CN102457386A (en) | Multicast message transmission method in bidirectional PIM (Personal Information Management) of communication equipment and communication equipment | |
| CN101394358B (en) | Method and device for enhancing reliability of multicast forwarding | |
| JP2006074132A (en) | Multicast communication method and gateway device | |
| CN102111279B (en) | Method and equipment for transmitting multicast data | |
| CN105743797A (en) | Multicasting VPN (Virtual Private Network) tunnel building method based on interface binding | |
| CN103716169A (en) | Point-to-multipoint multicast realization method, network nodes and system | |
| CN102158405B (en) | Method and device for establishing multicast forwarding table entry in bidirectional protocol independent multicast (PIM) network | |
| CN102082720A (en) | Method and device for forwarding multicast flow | |
| CN101262446A (en) | A generation method and device for Hello packet | |
| CN101488873B (en) | Multicast joining method and system | |
| CN101388788B (en) | Double layer multicast management method, system and double layer switch | |
| CN102843303B (en) | Multicast message processing method in PIM and device | |
| CN102148690A (en) | Multicast table generation method and device, and multicast transmission method and device | |
| Bartczak et al. | Lightweight PIM—a new multicast routing protocol | |
| CN102394813B (en) | Multicast routing table item management method and router |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Patentee after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou hi tech Industrial Development Zone, Zhejiang province science and Technology Industrial Park, No. 310 and No. six road, HUAWEI, Hangzhou production base Patentee before: Huasan Communication Technology Co., Ltd. |