CN101155187A - System and method for port mapping of communication network switchboard - Google Patents
System and method for port mapping of communication network switchboard Download PDFInfo
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- CN101155187A CN101155187A CNA2006101599519A CN200610159951A CN101155187A CN 101155187 A CN101155187 A CN 101155187A CN A2006101599519 A CNA2006101599519 A CN A2006101599519A CN 200610159951 A CN200610159951 A CN 200610159951A CN 101155187 A CN101155187 A CN 101155187A
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Abstract
The present invention describes a system and method for implementing port mapping technology in a switchboard of communication network, wherein the switchboard comprises a plurality of ports, which includes user ports and network ports. In one embodiment instance, the method includes: identifying a first part of ports as user ports; identifying a second part of ports as network ports; distributing a plurality of user ports to a first conversation; as well as preventing the user ports distributed to the first conversation from alternating with each other.
Description
Technical field
Relate generally to communication network of the present invention.More particularly and not in restrictive mode, the present invention is directed to the system and method that is used for carrying out port mapping at the switch of this type of network.
Background technology
In the past, use router to separate the business that belongs to different user is general communication network engineering custom always, and router is a kind of the 3rd layer of (" L3 ") equipment, and it is assigned to each user the different sub-network that is identified by unique layer 3 address.The port that router will be by distributing to user subnet sends each user's grouping then.Consider and have only a limited number of bit to be used to the fact of subnet mask in the layer 3 address, the number that is carried out the subnet of addressing by single router is limited.
Will be appreciated that in communication network, have a lot of network users to require their business to keep definitely separating with other users' business.For example, ISP (" ISP ") has the client who much wants to be connected to server zone usually.Inserting ISP finishes by the router that is connected to the public external computer networks such as the internet.This router must be routed to each client's business this client's local area network (LAN) (" LAN ") in the mode of the safety of data of keeping different clients and privacy.ISP must prevent to be received by another client's server from the business that a client's server is initiated.As previously mentioned, the restriction to the use of subnet in this scene is to have only a limited number of subnet to define according to the layer 3 address of standard.In the modern computer network system, the restriction on this number has seriously restricted can be serviced and make the individual consumer's that its data service safeguarded respectively number.In addition, especially have in network under the situation that its Packet Service must keep thousands of client of separating, webmaster becomes heavy rapidly to the management of a large amount of subnets.
The another kind of method that can keep customer service to separate is the particular virtual local area network (VLAN) that defines in the network switch or bridge by using, and it is the 2nd layer of (" L2 ") equipment.Dedicated vlan is a kind of functionality of vlan, and wherein the access interface of switch only is allowed to communicate with the router port of some appointment.Utilize the safety of dedicated vlan to be implemented in hardware layer and carry out, and this safety realizes not allowing transmitting between the neighboring access port in dedicated vlan any frame of any kind of.Dedicated vlan provides based on the isolation between the port among the fail safe of port and the VLAN that distributed.Data service on the down link port can only be forwarded to uplink port or transmit from uplink port.The shortcoming of dedicated vlan is to be difficult to it is configured and it can't provide total solution in some cases.
Summary of the invention
An embodiment is a kind of method that realizes the port mapping technology in the switch of communication network, and wherein this switch comprises a plurality of ports, and these ports comprise the user port and the network port.This method comprises: with first's port-mark is user port; With the second portion port-mark is the network port; A plurality of user ports in the user port are distributed to first session; And the user port that prevents to distribute to first session is mutual each other.
Another embodiment is a kind of method that realizes the port mapping technology in the switch of communication network, and wherein this switch comprises a plurality of ports.This method comprises: with first's port-mark is user port; With the second portion port-mark is the network port; A plurality of user ports in the user port are distributed to first session; The user port that prevents to distribute to first session is mutual each other; And short of any one network port is assigned to first session, and the user port that just allows to distribute to first session is mutual each other with the port that is not assigned to first session.
Another embodiment is a kind of system that is used for realizing at the switch of communication network the port mapping technology, and wherein this switch comprises the network port that is used to be connected to the user port of subscriber equipment and is used to be connected to the network equipment.This system comprises the device that is used for a plurality of user ports of user port are distributed to first session; And the mutual each other device of user port that is used to prevent to distribute to first session.
Description of drawings
With reference to the detailed description of carrying out below in conjunction with accompanying drawing, can more fully understand the present invention, wherein:
Fig. 1 is the block diagram of wherein having realized according to the switch of the port mapping technology of an embodiment;
Fig. 2 is the block diagram of wherein having realized according to the switch of the port mapping technology of an embodiment;
Fig. 3 is the block diagram of wherein having realized according to the communication network of the port mapping technology of an embodiment;
Fig. 4 is the block diagram of wherein having realized according to the communication network of the port mapping technology of an embodiment;
Fig. 5 is the block diagram of wherein having realized according to the communication network of the port mapping technology of an embodiment;
Fig. 6 is the block diagram of wherein having realized according to the communication network of the port mapping technology of an embodiment;
Fig. 7 is the flow chart according to the operation of the port mapping technology that is used for configuration switch of an embodiment; And
Fig. 8 A and Fig. 8 B have illustrated the port bitmap table that has wherein realized according to the respective switch of the network of the port mapping technology of an embodiment.
Embodiment
Referring now to about how to realize best and use various example of the present invention to describe embodiments of the invention.The a plurality of views that run through whole description and accompanying drawing use identical reference number to represent identical or corresponding part, and wherein each unit might not be drawn in proportion.
Will describe in detail as following, an embodiment is a kind of system and method that is used for carrying out at the switch of communication network port mapping.Especially, the embodiments described herein and the port mapping session network port that interrelate, that identified by the session id of distributing to port (sign) (being about to the port that switch is connected to other switch in the network) and user port (even must subscriber equipment being connected to the port of this switch) between distinguish.Generally speaking, when a side of only having created session on the switch (being user port), the user port of this session can with switch on arbitrarily other port communicate, but these user ports can not be mutual each other.This situation has been described among Fig. 1.Especially, as shown in Figure 1, on switch 100, create two sessions (session 1 and session 2).The user port 102 of session 1 is a port one-2.The user port 104 of session 2 is port 3-4.Remaining port 5-26 is a universal port 106.Owing to also create the network ports for session 1 or session 2, so the user port 102 of session 1 can communicate with the user port 104 and the universal port 106 of session 2 on the switch 100.Similarly, the user port 104 of session 2 can communicate with the user port 102 and the universal port 106 of session 1 on the switch 100.Yet the user port 102 of session 1 (port one and port 2) can not communicate with one another; Similarly, the user port 104 of session 2 (port 3 and port 4) can not communicate with one another.On the other hand, universal port 106 (port 5-26) can not be subjected to similar restriction, and can communicate with one another.
When the both sides of having created session on single switch (being the user port and the network port), the user port in the session can only communicate with the network port in the same session, and can not communicate with other port on the switch.Therefore this session has constituted the closed body about user port on switch.This situation has been described among Fig. 2.
Especially, as shown in Figure 2, two sessions (session 1 and session 2) on switch 200, have been created.The user port 202 of session 1 is a port one-2.The network port 204 of session 1 is port 25-26.The user port 206 of session 2 is port 3-4.Remaining port 5-24 is a universal port 208.Owing to created the network port 204, so the user port 202 of session 1 can only communicate with the network port 204 of session 1 for session 1.On the contrary, the user port 206 of session 2 can communicate with the network port 204 and the universal port 208 of session 1 on the switch 200.Yet same, the user port 202 of session 1 (port one and port 2) can not communicate with one another; Similarly, the user port 206 of session 2 (port 3 and port 4) can not communicate with one another.On the other hand, the network port 204 and universal port 208 (port 5-26) can not be subjected to similar restriction, and can communicate with one another.
Generally speaking, for the user port and the network port, embodiment as described herein has used following rule and has used the network port and user port to realize port mapping.
1. the port mapping session comprises session id, user port set, and/or network port set.
2. the port mapping session can be configured to have or do not have the user port and the network port.
3. the user port that has common session id can not communicate with one another.
4. user port can only participate in a port mapping session at any time.
5. user port can not be the network port, and vice versa.
6. if given session network port set is a non-NULL, then any user port of same session all can only communicate with the member in this network port set.
7. if session is configured to " two-way ", then the network port of this session can not communicate with other network port of same session.
More than said " sealing " mainly 6 provide by rule, this rule prevents that other port communicates in user port and the system.
Illustrate in greater detail application referring now to Fig. 3-Fig. 4 to rule listed above.Especially, Fig. 3 has illustrated according to the port mapping between four switch S 1-S4 in the network 100 of an embodiment.Switch S 1 has a plurality of user port A, B and M1-M3, and a plurality of network port N1-N3.Similarly, switch S2 has user port C, D and Y, and network port N4.Switch S3 has user port E, F and X, and network port N5, and switch S4 has user port G, H and Z, and network port N7.Explanation for example is with the hypothesis port mapping session below having disposed on the network 100, as shown in Figure 3.
On switch S1:
Port mapping session 1 (session id=1): port A and port B are user ports; Port N1 and port N2 are the network ports that is configured to two-way mode.
Port mapping session 2 (session id=2): port M1, M2 and M3 are user ports, and port N3 is the network port.
On switch S4:
Port mapping session 1 (session id=1): port G and port H are user ports, and port N7 is the network port.
Based on configuration shown in Figure 3 and that be described, realize following effect in the above:
1. user port A can not (have identical session id because of them) each other alternately with user port B;
2. user port A and user port B can not carry out alternately (because they can only communicate with network port N1 (to switch S3) and network port N2 (to switch S4)) with the port on the switch S2;
3. user port C, D and Y can carry out (reason is the same) alternately with user port A and all user ports the user port B on switch S1 on the network;
4. user port G can not (have identical session id because of them) each other alternately with user port H;
5. user port G and user port H can carry out alternately with all user ports that switch S1 goes up except that user port M1, M2 and M3, but can not carry out that (network port N7 (switch S4) is connected to network port N2 (switch S1) alternately with any port on the switch S3, the session id of this network port N2 is 1, therefore can communicate with user port A and user port B, and can not communicate with port M1, M2 and M3; Because bi-directional session, network port N1 and network port N2 can not communicate with one another); And
6. user port E, F and X can carry out alternately with all user ports that switch S1 goes up except that user port M1, M2 and M3, but can not carry out (reason is the same) alternately with any port on the switch S4.
With reference now to Fig. 4,, explanation for example is with the hypothesis port mapping session below having disposed on the network 100, as shown in Figure 4.
On switch S1:
Port mapping session 1 (session id=1): port A and port B are user ports; Port N1 and port N2 are the network ports that is configured to unidirectional mode.
Port mapping session 2 (session id=2): port M1, M2 and M3 are user ports, and port N3 is the network port.
On switch S4:
Port mapping session 1 (session id=1): port G and port H are user ports, and port N7 is the network port.
Based on configuration shown in Figure 4 and that be described, realize following effect in the above:
1. user port A can not (have identical session id because of them) each other alternately with user port B;
2. user port A and user port B can not carry out alternately (because they can only communicate with network port N1 (to switch S3) and network port N2 (to switch S4)) with the port on the switch S2;
3. user port C, D and Y can carry out (reason is the same) alternately with user port A and all user ports the user port B on switch S 1 on the network;
4. user port G can not (have identical session id because of them) each other alternately with user port H;
5. user port G and user port H can go up all user ports except that user port M1, M2 and M3 with switch S1 and carry out alternately that (network port N7 (switch S4) is connected to network port N2 (switch S1), the session id of this network port N2 is 1, therefore can communicate with user port A and user port B, and can not communicate with port M1, M2 and M3), and can carry out (because one-way coversation, network port N1 and network port N2 can communicate with one another) alternately with the arbitrary port on switch S2 or the switch S3; And
6. user port E, F and X can carry out alternately with all user ports that switch S1 goes up except that user port M1, M2 and M3, and can carry out (reason is the same) alternately with the arbitrary port on switch S2 or the switch S3.
Will be appreciated that, when if network port N1, N2 and N3 participate in two sessions (being session 1 and session 2) on the configurable switch S1 simultaneously, port N1, N2 and N3 can be mutual each other, and user port C, D on the switch S2 and Y can carry out with all user ports on switch S1, S3 and the S4 alternately.
With reference now to Fig. 5,, explanation for example is with the hypothesis port mapping session below having disposed on the network 100, as shown in Figure 5.
On switch S1:
Port mapping session 1 (session id=1): port N1 and port N2 are the network ports that is configured to two-way mode.
Port mapping session 2 (session id=2): port N3 is the network port.On switch S4:
Port mapping session 1 (session id=1): port G and port H are user ports.Based on aforementioned content, realize following effect:
User port A, B, M1, M2 and M3 can be each other mutual (all being universal port) with session id;
2. the unique restriction on the switch S1 is: network port N1 and network port N2 be mutual (bi-directional session) each other, thereby has restricted communicating with one another of switch S3 and switch S4.
3. the user port G on the switch S4 and user port H mutual (port G has identical session id with port H) each other, and they can not carry out alternately (owing to network port N1 and network port N2 can not be mutual each other) with the port on the switch S3.
With reference now to Fig. 6,, explanation for example is with the hypothesis port mapping session below having disposed on the network 100, as shown in Figure 6.
On switch S1:
Port mapping session 1 (session id=1): port A and port B are user ports.
Port mapping session 2 (session id=2): port M1, M2 and M3 are user ports.
On switch S4:
Port mapping session 1 (session id=1): port G and port H are user ports.
Based on aforementioned content, realize following effect:
1. user port A and user port B mutual (identical session id) each other.
2. user port M1, M2 and M3 mutual (identical session id) each other.
3. user port A can carry out alternately with user port M1, M2 and M3, and vice versa (different session ids and do not have the network port to be assigned to session).
4. user port B can carry out alternately with user port M1, M2 and M3, and vice versa (reason is the same).
5. user port G and user port H mutual (identical session id) each other.
Thereby Fig. 7 be described herein be used for switch is configured realize to use the network port and user port to carry out the flow chart of operation of the embodiment of port mapping.In step 700, network manager identifies and should not be allowed to take up an official post what with this switch on the switch its user port carries out all mutual user ports, and first session id is distributed to these user ports.In step 702, network manager identifies the user port that is allowed to and identifies and carries out the mutual network port in step 700, and first session id is distributed to these network ports.Therefore, can carry out mutual port with the user port that identifies on this switch in step 700 can only be the network port that identifies in step 702.
In step 704, network manager identifies on the switch should not be allowed to mutual each other user port, and second session id is distributed to these user ports.Can be at not being allowed to each other mutual but be allowed to carry out the user port group of mutual arbitrary number and repeat step 704 with user port, universal port and the network port of other session.
In one embodiment, by setting up the port of permission, can realize these rules according to the bitmap table in the general application-specific integrated circuit (ASIC) (" ASIC ") that exists in the switch.Configuration is managed, so that obtain the character of expectation.For example, on an ASIC, when receiving a grouping in certain port, the switch decision sends this grouping to which port.In one embodiment, for limited port, the respective entries in the port bitmap table that allows to send is set to " 0 ", and for the port that allows, the respective entries in the port bitmap table that allows to send is set to " 1 ".
Fig. 8 A and Fig. 8 B have illustrated respectively when as illustrated in fig. 3 switch S 1 and S4 being configured, the exemplary bit chart of the port of these switches." 1 " in the clauses and subclauses shows that permission carries out alternately between the corresponding port; " 0 " show do not allow mutual.For example, shown in Fig. 8 A, do not allow between user port A and user port B, to carry out mutual, as at shown in " 0 " in the respective entries of these ports, and allow between user port A and network port N1, to carry out alternately, as at shown in " 1 " in the respective entries of these ports.
Can be sure of that according to above detailed description of carrying out, operation of the present invention and structure will be apparent.Although exemplary embodiment of the present invention shown and that describe has been described to preferably should understand easily, under the situation that does not depart from the scope of the invention illustrated in the claims, can carry out various changes and modification therein.
Claims (10)
1. method that in the switch of communication network, realizes the port mapping technology, described switch comprises a plurality of ports, and described port comprises the user port and the network port, and described method comprises:
With the described port-mark of first is user port;
With the described port-mark of second portion is the network port;
A plurality of user ports in the described user port are distributed to first session; And
The user port that prevents to distribute to described first session is mutual each other.
2. method according to claim 1, further comprise: short of any one described network port is assigned to described first session, and the described user port that just allows to distribute to described first session is mutual each other with the port that is not assigned to described first session.
3. method according to claim 1 further comprises:
A network port in the described network port is distributed to described first session; And
Preventing to distribute to the described user port of described first session carries out with the network port except that the described network port of distributing to described first session alternately.
4. method according to claim 1 further comprises:
A plurality of user ports in the described user port are distributed to second session; And
The described network port that prevents to distribute to described second session is mutual each other.
5. method according to claim 1 further comprises a plurality of network ports in the described network port is distributed to described first session.
6. method according to claim 1, wherein said first session is an one-way coversation, described method comprises that further the described network port that allows to distribute to described first session is mutual each other.
7. method according to claim 1, wherein said first session is a bi-directional session, described method comprises that further the described network port that prevents to distribute to described first session is mutual each other.
8. method according to claim 1, the wherein said user port that prevents to distribute to same session comprise alternately each other and prevent that the grouping of being received by described switch first user port from the user port of distributing to certain session from being sent via second user port the user port of distributing to same session from described switch.
9. method according to claim 1, wherein said user port can be connected to subscriber equipment.
10. method according to claim 1, the wherein said network port can be connected to other switch in the described communication network.
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| CNA2006101599519A CN101155187A (en) | 2006-09-28 | 2006-09-28 | System and method for port mapping of communication network switchboard |
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| CNA2006101599519A CN101155187A (en) | 2006-09-28 | 2006-09-28 | System and method for port mapping of communication network switchboard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450824A (en) * | 2018-11-14 | 2019-03-08 | 盛科网络（苏州）有限公司 | A kind of method and interchanger of interchanger configuration MAP |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450824A (en) * | 2018-11-14 | 2019-03-08 | 盛科网络（苏州）有限公司 | A kind of method and interchanger of interchanger configuration MAP |
| CN109450824B (en) * | 2018-11-14 | 2021-05-14 | 盛科网络（苏州）有限公司 | Method for configuring MAP by switch and switch |
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