CN1735072B - Improved realization process for WLAN net bridge transparent bridge - Google Patents
Improved realization process for WLAN net bridge transparent bridge Download PDFInfo
- Publication number
- CN1735072B CN1735072B CN200410059139XA CN200410059139A CN1735072B CN 1735072 B CN1735072 B CN 1735072B CN 200410059139X A CN200410059139X A CN 200410059139XA CN 200410059139 A CN200410059139 A CN 200410059139A CN 1735072 B CN1735072 B CN 1735072B
- Authority
- CN
- China
- Prior art keywords
- bridge
- frame
- mac
- center
- long
- 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.)
- Expired - Fee Related
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
This invention discloses a improved realization method for wireless LAN transparent bridging composed of treatment processes for data frame from center and remote access network bridge. Wherein, the center bridge recovery the source MAC address and length of the data frame received data frame with remote access network bridge mark, or replaces the target MAC address and labels with center access bridge for the single data frame with the target port belonging to remote bridge, or transposes directly by transparent bridging for other data frame; correspondingly, the remote access bridge recovery the target MAC address and length for received data frame with center access bridge mark, or replaces the target MAC address and labels with remote access bridge for data frame to wireless port and transposes by transparent bridging. The invention realizes normal communication between remote access bridge users or remote access bridge user and center remote access bridge user, and increases system flexibility.
Description
Technical field
The present invention relates to a kind of communication means of WLAN (wireless local area network), when relating in particular to a kind of IEEE 802.11 wireless local area network buildings, utilize the center to insert the implementation method that bridge and long-range access bridge transparent bridging carry out wireless telecommunications.
Background technology
Along with popularizing that WLAN (wireless local area network) is used, in some difficult areas of setting up network by cable, the transparent bridging by radio local network net bridge has solved the unvanquishable difficult problem of traditional cable network, and this application more and more is subjected to users' welcome.So-called transparent bridging is meant the content that does not change receiving data frames, according to the bridges forward rule, Frame is sent to the destination pellucidly.
When actual networking, the center is laid a center and is inserted bridge (AB-Center) usually, and the center is inserted bridge and also be can be used as WAP (wireless access point) (AP), inserts a plurality of wireless terminals (STA).Lay a plurality of long-range access bridges (AB-Client) in the border district, each long-range access bridge is equivalent to STA, inserts bridge through the wireless association center that is linked into, and this bridge networking model is also referred to as basis (Infrastructure) architecture mode.Insert the wireless transparent bridges forward of bridge through long-range access bridge and center, insert between the cable network user that bridge links to each other with long-range access bridge or center and and be linked into can mutual communication between the wireless terminal of center access bridge.
The WLAN (wireless local area network) center of realizing with IEEE 802.11MAC firmware design is inserted in bridge and the long-range access bridge product at present, the multicast or the broadcast data frame that come auto correlation wireless terminal or long-range access bridge that the IEEE 802.11MAC firmware of bridge can direct repeating system receives from wireless medium inserted at the center, and target MAC (Media Access Control) address be monocular (Unicast) Frame of related wireless terminal to destination device, but the Frame of other types then can not adopt the mode of this direct repeating system to realize.
For example, the source MAC that long-range access bridge inserts all types Frame of bridge transmission to the center must be the wireless MAC address of long-range access bridge, and long-range access bridge could insert bridge through the wireless medium center that send to Frame; The bridge of center access simultaneously must be long-range access bridge self radio MAC Address to the target MAC (Media Access Control) address of the monocular Frame that long-range access bridge sends, and long-range access bridge could receive the Frame that inserts bridge from the center.Therefore, must do conversion to the source MAC or the target MAC (Media Access Control) address of Frame, and the MAC Address that the recipient must the restore data frame be converted after conversion, long-range access bridge and center are inserted between the user of bridge, and (needed to insert bridge) proper communication between the user of long-range access bridge through the center.And just can't realize with the method for MAC firmware relaying.
Application number is that 200410006574.6 Chinese patent application " a kind of implementation method of radio local network net bridge transparent bridging " has disclosed a kind of transparent bridging technology, promptly in the bridge product that IEEE 802.11MAC firmware is arranged, the wire user of long-range access bridge and center are inserted when communicating by letter between the wireless terminal of bridge, the wire user of long-range access bridge mails to the center and inserts the Frame of wireless terminal of bridge directly by IEEE 802.11MAC firmware relaying, and do not transmit through the transparent bridging of center access bridge, and the Frame that the center inserts that the wireless terminal of bridge receives from the wire user of long-range access bridge, be to carry out the Frame that source MAC is replaced, and Frame length has increased MAC Address length and long-range access bridge mark lengths through long-range access bridge.In this technology, if wireless terminal has limited the maximum of received data frame and has allowed length (for example Ethernet specified data frame maximum length is 1518 bytes) when receiving, when then long-range access bridge inserts bridge wireless terminal transmission maximum length Frame to the center, because after carrying out the source MAC replacement, Frame has increased MAC Address length and long-range access bridge mark lengths, can not receive thereby cause the center to insert the bridge wireless terminal.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of improvement implementation method of radio local network net bridge transparent bridging, ensures in wireless terminal that access bridge in center on the bridge product of MAC firmware is arranged and the proper communication between the long-range access bridge subscriber.
In order to solve the problems of the technologies described above, the invention provides the improvement implementation method that the bridge transparent bridging is inserted at a kind of WLAN (wireless local area network) center, and a kind of improvement implementation method of long-range access bridge transparent bridging of mutual correspondence.
Wherein, the improvement implementation method of center access bridge transparent bridging may further comprise the steps:
(a) insert the tabulation of establishment wireless terminal, the tabulation of long-range access bridge and mac address table on the bridge at the center;
(b) receive Frame;
(c) judge whether described Frame source MAC is present in long-range access bridge tabulation, if, purpose and source MAC that the purpose and the source MAC of Frame reverted to initial data frame and the length that reverts to initial data frame are with source MAC and reception sources port binding after recovering and learn in the described mac address table; Otherwise, with the source MAC and the reception sources port binding of described Frame and learn in the described mac address table;
(d) type of the described Frame of judgement, if the monocular Frame is carried out next step, if multicast or broadcast data frame, execution in step (g);
(e) determine the destination interface of described Frame, and judge its type, if long-range access bridge is carried out next step, otherwise execution in step (g);
(f) preserving its target MAC (Media Access Control) address on the described Frame and doing center access bridge mark, then its target MAC (Media Access Control) address is replaced to the MAC Address of the long-range access bridge that will mail to, and increase the length of described Frame;
(g) press transparent bridging and transmit rule, described Frame is forwarded to destination interface.
Said method also can have following characteristics: in described step (c) before, judge the media of described Frame earlier, if from wireless medium, execution in step (c), if from wired media, with the source MAC and the reception sources port binding of described Frame and learn in the described mac address table execution in step (d).
Said method also can have following characteristics: in described step (e), for the monocular Frame, determine the destination interface that this Frame should mail to according to its target MAC (Media Access Control) address from described mac address table, if do not find, be destination interface just with the every other port except the reception sources port.
Accordingly, the improvement implementation method of the long-range access bridge of the present invention transparent bridging may further comprise the steps:
(a) on long-range access bridge, create mac address table,
(b) receive Frame;
(c) check described Frame, insert the bridge mark, carry out next step if having the center, otherwise, with the source MAC and the reception sources port binding of described Frame and learn in the described mac address table execution in step (e);
(d) target MAC (Media Access Control) address of described Frame is reverted to the target MAC (Media Access Control) address of initial data frame and revert to the length of initial data frame, with source MAC and reception sources port binding after recovering and learn in the described mac address table;
(e) determine the destination interface of described Frame,, carry out next step if mail to radio port, if mail to cable port, execution in step (g);
(f) on described Frame, preserve its purpose and source MAC, then its target MAC (Media Access Control) address is replaced with associated center and insert the BSSID (basic service set identification of bridge, be 6 byte MAC Address), the MAC Address of the long-range access bridge of source MAC alternative costs, and increase the length of described Frame;
(g) press transparent bridging and transmit rule, Frame is forwarded to destination interface.
Said method also can have following characteristics: in described step (c) before, judge the media of described Frame earlier, if from wireless medium, execution in step (c), if from wired media, with the source MAC and the reception sources port binding of described Frame and learn in the described mac address table execution in step (e).
Said method also can have following characteristics: in described step (e), for the monocular Frame, determine the destination interface that this Frame should mail to according to its target MAC (Media Access Control) address from described mac address table, if do not find, be destination interface just with the every other port except the reception sources port.
As from the foregoing, the maximum allowable number that the inventive method is limited in Ethernet regulation in wireless terminal receiving data frames maximum length is during according to frame length, and the effect of proper communication between the wireless terminal of bridge and the long-range access bridge subscriber is inserted at the center on the bridge product of MAC firmware of having realized having.
Description of drawings
Fig. 1 is the schematic diagram that bridge and the networking of long-range access bridge are inserted in embodiment of the invention WLAN (wireless local area network) center;
Fig. 2 is that the flow chart that bridge is handled the data frame is inserted at embodiment of the invention WLAN (wireless local area network) center;
Fig. 3 is the flow chart that the long-range access bridge of embodiment of the invention WLAN (wireless local area network) is handled the data frame.
Embodiment
The Frame of bridge wireless terminal reception from long-range access bridge inserted at the center, must guarantee it is Frame (being that Frame and initial data frame are identical) without changing, arbitrarily center access bridge wireless terminal could with user's proper communication of long-range access bridge.To receive target MAC (Media Access Control) address be that the Frame of BSSID is directly submitted the transparent bridging processing that inserts bridge in the center because the IEEE 802.11MAC firmware of bridge is inserted at the center, so long-range access bridge need replace with the destination address of Frame the BSSID of associated central bridge, source MAC replaces with the self radio MAC Address, and original purpose and source MAC be kept at the Frame afterbody, Frame inserts the forwarding of the transparent bridging of bridge through the center, arbitrarily the center insert the bridge wireless terminal can with user's proper communication of long-range access bridge.
Networking with Fig. 1 is an example, and bridge AB-Center is inserted at wireless terminal STA and long-range access bridge AB-Client1, AB-Client2 access center, and terminal PC1, PC2 and PC3 are connected respectively to AB-Center, AB-Client1 and AB-Client2.This is the example of a simplification, and AB-Client1, AB-Client2 can be connected a plurality of wire users separately with AB-Center in the practical application, and AB-Center also can insert more wireless terminal and long-range access bridge.
The implementation method of radio local network net bridge transparent bridging of the present invention comprises the implementation method of center access bridge transparent bridging and the implementation method that respective remote inserts the bridge transparent bridging.
The center is inserted needs to create wireless terminal tabulation, the tabulation of long-range access bridge and mac address table on the bridge AB-Center, the wireless terminal STA that inserts is added the wireless terminal tabulation, to insert long-range access bridge AB-Client1,2 and be mapped as the virtual radio port, joining long-range access bridge tabulation binds with this long-range access bridge simultaneously, the source MAC that receives Frame is learnt mac address table, and set up the binding relationship of MAC Address and corresponding port.
As shown in Figure 2, after receiving Frame, the handling process that the transparent bridging of bridge is inserted at the center may further comprise the steps:
Step 100 receives the Frame from wireless medium or wired media (being compartment system);
Step 110, whether the reception media of judgment data frame is wireless medium, if carry out next step, otherwise be from wired media, execution in step 140;
Step 120 checks whether the source MAC of Frame is positioned at long-range access bridge tabulation, if then Frame is carried out next step from long-range access bridge, otherwise from wireless terminal, execution in step 140;
Step 130, purpose and source MAC that the purpose and the source MAC of Frame reverted to the initial data frame that is kept at the Frame afterbody, and revert to the length of initial data frame;
Step 140 with source MAC (then being the address after recovering as changing) and its receiving port (being the reception sources port that Frame enters bridge) binding of Frame, is learnt mac address table;
Whether step 150, judgment data frame multicast or broadcast data frame, if, execution in step 220; Otherwise be the monocular Frame, carry out next step;
Step 160, whether the source MAC of judgment data frame and target MAC (Media Access Control) address are positioned at same port, if, execution in step 230, otherwise carry out next step;
Step 170 is searched the destination interface that Frame should mail to according to the target MAC (Media Access Control) address of Frame at mac address table, does not just find and sends (promptly taking the inundation send mode) to the every other port except the reception sources port;
Step 180, the destination interface type of judgment data frame, if long-range access bridge is carried out next step, if wireless terminal, execution in step 200, if cable port, execution in step 210;
Step 190, the target MAC (Media Access Control) address and the center access bridge mark of Frame are kept at the Frame afterbody, then its target MAC (Media Access Control) address is replaced to the MAC Address of corresponding long-range access bridge, and Frame length is increased MAC Address length and center access bridge mark lengths;
Step 200 is pressed transparent bridging and is transmitted rule, and Frame is forwarded to wireless medium, finishes;
Step 210 is pressed transparent bridging and is transmitted rule, and Frame is forwarded to wired media, finishes;
Step 220 is pressed transparent bridging and is transmitted rule, directly Frame is forwarded to the target media, finishes;
Step 230 filters out this monocular Frame, finishes.
According to above flow process, networking in conjunction with Fig. 1, when center access bridge AB-Center receives the Frame of wireless terminal STA or compartment system user PC1, directly submitting transparent bridging transmits, and when receiving the Frame that PC2, PC3 send by long-range access bridge AB-Client1,2, then need to recover purpose and the source MAC and the length of initial data frame.And when transmitting, target MAC (Media Access Control) address is the monocular Frame of long-range access bridge subscriber PC2, PC3, send again after target MAC (Media Access Control) address need being converted to long-range access bridge AB-Client1,2 MAC Address, and target MAC (Media Access Control) address is the Frame of wireless terminal STA or center access bridge compartment system user PC1, when perhaps mailing to the broadcasting of PC1, PC2, PC3 or wireless terminal STA and multicast packet frame, can directly adopt transparent bridging technology to transmit.
For the bridge product that the MAC firmware is arranged, STA sends inserts the multicast of bridge or the IEEE 802.11MAC firmware direct repeating system that broadcast data frame can be inserted bridge by the center through the center.
Long-range access bridge AB-Client1,2 needs to create mac address table.The source MAC that receives Frame is learnt mac address table, and set up the binding relationship of MAC Address and corresponding port.
As shown in Figure 3, after receiving Frame, the handling process of the transparent bridging of long-range access bridge may further comprise the steps:
Step 300 receives the Frame from wireless medium or compartment system;
Step 310, whether the reception media of judgment data frame is wireless medium, if carry out next step, otherwise be from wired media, execution in step 350;
Step 320 is checked the mark of Frame, inserts the bridge mark if having the center, carries out next step, if do not have above-mentioned mark, execution in step 350;
Step 340 reverts to the target MAC (Media Access Control) address of initial data frame with the target MAC (Media Access Control) address of Frame and reverts to the length of initial data frame;
Step 350 with source MAC (then being the address after recovering as changing) and its receiving port binding of Frame, is learnt mac address table;
Step 360 judges whether the monocular Frame, if, carry out next step, otherwise execution in step 390;
Step 370 judges whether the source MAC of monocular Frame is positioned at identical port with target MAC (Media Access Control) address, if, execution in step 430, otherwise carry out next step;
Step 380 is searched the destination interface that Frame should mail to according to the target MAC (Media Access Control) address of monocular Frame at mac address table, does not just find to send to the every other port except the reception sources port;
Whether step 390, the destination interface of judgment data frame radio port, if, carry out next step, otherwise execution in step 420;
Step 400, the purpose and the source MAC of Frame are kept at the Frame afterbody, then its target MAC (Media Access Control) address is replaced with associated center and insert bridge BSSID, source MAC replaces to the MAC Address of local long-range access bridge, and Frame length is increased purpose and source MAC length;
Step 410 is pressed transparent bridging and is transmitted rule, and Frame is forwarded to wireless medium, finishes;
Step 420 is pressed transparent bridging and is transmitted rule, and Frame is forwarded to wired media, finishes;
Step 430 filters out this monocular Frame, finishes.
According to above flow process, in conjunction with the networking of Fig. 1, PC2 when wireless medium sends all types Frame to PC1, PC3, STA, all carries out the replacement of purpose and source MAC by long-range access bridge AB-Client1.Long-range access bridge AB-Client1 receives and has the Frame that the bridge mark is inserted at the center, and the monocular Frame as STA, PC1 or PC3 are dealt into PC2 needs the target MAC (Media Access Control) address of restore data frame and the length of initial data frame.Insert the Frame of bridge mark for the above-mentioned center that do not have that receives from wireless medium, and then needn't carry out the recovery operation of address from the Frame of compartment system.
The transparent bridging method of long-range access bridge of present embodiment and center access bridge is combined, the monocular Frame that mails to PC3 with PC2 is an example, can carry out the replacement of purpose and source MAC at long-range access bridge AB-Client1, bridge AB-Center is inserted at the center can recover its purpose and source MAC when receiving, when transparent bridging is transmitted, then carry out the target MAC (Media Access Control) address center of replacing and do and insert the bridge mark, and on long-range access bridge AB-Client2, recover its destination address again, thereby realized the proper communication between PC2 and the PC3, simultaneously concerning recipient user, the content of Frame does not change, and has realized transparent bridging.
And for example, PC2 mails to the monocular Frame of STA, can carry out the replacement of purpose and source MAC at long-range access bridge AB-Client1, bridge AB-Center is inserted at the center can recover its purpose and source MAC when receiving, when transparent bridging is transmitted, Frame is directly sent to STA, thereby realized the proper communication between PC2 and the STA, simultaneously concerning STA, the content of Frame does not change, and has realized transparent bridging.
And for example, PC1 mails to the monocular Frame of PC2, on center access bridge AB-Center, can carry out the replacement of target MAC (Media Access Control) address and do center access bridge mark, and after being forwarded to long-range access bridge AB-Client1 by transparent bridging, recover the target MAC (Media Access Control) address of its initial data frame again, thereby realized proper communication and transparent bridging between PC1 and the PC2.
Other between STA and PC1, PC2, PC3, can realize proper communication and transparent bridging according to flow process of the present invention, just gives unnecessary details no longer one by one at this.
The bridge mark is inserted at center in the above-mentioned flow process can be by data 32 bit checks and the acquisition of calculated data frame fixed position and length.For example 32 bit checks of this 12 byte of calculated data frame target MAC (Media Access Control) address and source MAC and, the center is inserted the bridge mark and is got low 16.
In sum, improvement implementation method by radio local network net bridge transparent bridging of the present invention, insert bridge to the source MAC of transmission Frame and the conversion or the recovery of target MAC (Media Access Control) address by long-range access bridge and center, and the transparent bridging that inserts bridge through long-range access bridge or center is transmitted, realized between the long-range access bridge subscriber, and the intercommunication mutually between the bridge subscriber is inserted at long-range access bridge and center.When particularly the maximum allowable number that is limited in Ethernet regulation in wireless terminal receiving data frames maximum length is according to frame length, realized having on the bridge product of MAC firmware the center to insert the wireless terminal of bridge and the proper communication of long-range access bridge subscriber.In fact, the method of embodiment has solved and has included the MAC firmware in the problem of communicating by letter between the user under all situations that the interior bridge product that designs realization in the architecture mode exists, and obtained the effect of Frame active repeating, it is more extensive to make networking use, and has improved the flexibility of networking.
Claims (6)
1. the improvement implementation method of bridge transparent bridging is inserted at a WLAN (wireless local area network) center, may further comprise the steps:
A. insert at the center and create wireless terminal tabulation, the tabulation of long-range access bridge and mac address table on the bridge;
B. receive Frame;
C. judge whether described Frame source MAC is present in long-range access bridge tabulation, if, purpose and source MAC that the purpose and the source MAC of Frame reverted to initial data frame and the length that reverts to initial data frame are with source MAC and reception sources port binding after recovering and learn in the described mac address table; Otherwise, with the source MAC and the reception sources port binding of described Frame and learn in the described mac address table;
D. judge the type of described Frame, if the monocular Frame is carried out next step, if multicast or broadcast data frame, execution in step g;
E. determine the destination interface of described Frame, and judge its type, if long-range access bridge is carried out next step, otherwise execution in step g;
F. preserving its target MAC (Media Access Control) address on the described Frame and doing center access bridge mark, then its target MAC (Media Access Control) address is replaced to the MAC Address of the long-range access bridge that will mail to, and increase the length of described Frame;
G. press transparent bridging and transmit rule, described Frame is forwarded to destination interface.
2. the improvement implementation method of bridge transparent bridging is inserted at center as claimed in claim 1, it is characterized in that, before described step c, judge the reception media of described Frame earlier, if from wireless medium, if execution in step c is from wired media, with the source MAC and the reception sources port binding of described Frame and learn in the described mac address table execution in step d.
3. the improvement implementation method of bridge transparent bridging is inserted at center as claimed in claim 1, it is characterized in that, in described step e, for the monocular Frame, determine the destination interface that this Frame should mail to according to its target MAC (Media Access Control) address from described mac address table, if do not find, be destination interface just with the every other port except the reception sources port.
4. the improvement implementation method of the long-range access bridge of a WLAN (wireless local area network) transparent bridging may further comprise the steps:
A. on long-range access bridge, create mac address table,
B. receive Frame,
C. check described Frame, insert the bridge mark, carry out next step if having the center, otherwise, with the source MAC and the reception sources port binding of described Frame and learn in the described mac address table execution in step e;
D. the target MAC (Media Access Control) address of described Frame is reverted to the target MAC (Media Access Control) address of initial data frame and revert to the length of initial data frame, with source MAC and reception sources port binding after recovering and learn in the described mac address table;
E. determine the destination interface of described Frame, if mail to radio port, carry out next step, if mail to cable port, execution in step g;
F. on described Frame, preserve its purpose and source MAC, then its target MAC (Media Access Control) address is replaced with associated center and insert the basic service set identification of bridge, the MAC Address of the long-range access bridge of source MAC alternative costs, and increase the length of described Frame;
G. press transparent bridging and transmit rule, Frame is forwarded to destination interface.
5. the improvement implementation method of long-range access bridge transparent bridging as claimed in claim 4, it is characterized in that, before described step c, judge the reception media of described Frame earlier, if from wireless medium, if execution in step c is from wired media, with the source MAC and the reception sources port binding of described Frame and learn in the described mac address table execution in step e.
6. the improvement implementation method of long-range access bridge transparent bridging as claimed in claim 4, it is characterized in that, in described step e, for the monocular Frame, determine the destination interface that this Frame should mail to according to its target MAC (Media Access Control) address from described mac address table, if do not find, be destination interface just with the every other port except the reception sources port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410059139XA CN1735072B (en) | 2004-08-13 | 2004-08-13 | Improved realization process for WLAN net bridge transparent bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410059139XA CN1735072B (en) | 2004-08-13 | 2004-08-13 | Improved realization process for WLAN net bridge transparent bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1735072A CN1735072A (en) | 2006-02-15 |
| CN1735072B true CN1735072B (en) | 2010-04-21 |
Family
ID=36077273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410059139XA Expired - Fee Related CN1735072B (en) | 2004-08-13 | 2004-08-13 | Improved realization process for WLAN net bridge transparent bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1735072B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309235A (en) * | 2007-05-18 | 2008-11-19 | 华为技术有限公司 | Method for forwarding packet, media gateway controller, media gateway and network system |
| CN105392127B (en) | 2011-12-23 | 2020-12-15 | 华为技术有限公司 | Relay method of wireless relay equipment and wireless relay equipment |
| CN109743326B (en) * | 2019-01-10 | 2021-09-07 | 新华三云计算技术有限公司 | Traffic transmission method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414742A (en) * | 2002-12-03 | 2003-04-30 | 北京朗通环球科技有限公司 | Method of isolating user in radio local network |
| CN1437114A (en) * | 2002-02-08 | 2003-08-20 | 联想(北京)有限公司 | Two-layer exchange type firewall package filtering method based on bridge |
-
2004
- 2004-08-13 CN CN200410059139XA patent/CN1735072B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437114A (en) * | 2002-02-08 | 2003-08-20 | 联想(北京)有限公司 | Two-layer exchange type firewall package filtering method based on bridge |
| CN1414742A (en) * | 2002-12-03 | 2003-04-30 | 北京朗通环球科技有限公司 | Method of isolating user in radio local network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1735072A (en) | 2006-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100503690B1 (en) | Mobile communication system, Mobile communication method, Radio base station, Mobile system and, Computer readable recording medium | |
| US8169984B2 (en) | Communication system, radio lan base station control device, and radio lan base station device | |
| US7539212B2 (en) | Method and apparatus for MAC layer inverse multiplexing in a third generation radio access network | |
| US8179878B2 (en) | Method for performing synchronisation for multicast broadcast services in a wireless access communication network, corresponding multicast broadcast server and base station | |
| CN101331702A (en) | Method, wireless local area network(wlan),node and apparatus for multicast and/or broadcast acknowledgements | |
| CN100574283C (en) | Uplink and downlink transmission method and aggregation node | |
| CN114946158B (en) | System and method for multicasting/broadcasting service data | |
| CN101384020A (en) | Wireless relay system and data transmission method | |
| CN101640621B (en) | Method and device for realizing data transmission in wireless network | |
| CN103888909A (en) | Method and device for sending multicast flow in unicast mode | |
| CN1735072B (en) | Improved realization process for WLAN net bridge transparent bridge | |
| CN1561045A (en) | Method for implementing transparent bridging of radio local network bridging | |
| CN100481819C (en) | Method and apparatus for over-ring message retransmitting in elastic grouped ring network | |
| CN101325536A (en) | Base station of WiMAX system, method and apparatus for controlling transmission of multicast data packet in gateway | |
| CN101060518B (en) | A multi-path binding service information sending and receiving equipment | |
| CN101808041A (en) | Method for bridging and transmitting message and transmission router | |
| US6625154B1 (en) | Wireless asynchronous transfer mode communication system and method of controlling broadcast | |
| CN103535094B (en) | The transmission method of common public radio interface data and equipment | |
| US20060176864A1 (en) | Method of establishing links between stations which are connected to a telecommunication network | |
| CN102164114B (en) | Processing method for medium access control layer protocol data unit and machine terminal | |
| CN1761255B (en) | Method for transferring data among digital cluster system | |
| CN101192901B (en) | Information interaction device and method for auxiliary device and auxiliary device maintenance terminal | |
| CN102625489B (en) | A kind of base station, communication system and data processing method | |
| CN103024674B (en) | The method of transmitting multimedia broadcast multicast business, equipment and system | |
| CN103096499A (en) | Transmission method and device of service data |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20170813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |