CN102025796A - MAC (media access control) address updating method and device - Google Patents

Referring to Fig. 1, the MAC Address updating device comprises

101,

102 and

103 in the embodiment of the invention.

101 is used for obtaining the multicast group IP address of IPv4 version or the multicast group IP address of IPv6 version according to the message of receiving.Multicast group IP address is multicast group IP (Internet Protocol, Internet protocol) address, refers to the group IP address of

101 receives message, and wherein, message can be to join message or leave message, and described message is sent by IPv4 multicast recipient or IPv6 multicast recipient.It is to have IPv4 multicast recipient or request to add multicast group that transmission joins message, and sending leave message is to have IPv4 multicast recipient or IPv6 multicast recipient request to leave multicast

101 also can receiving data packets, is sent by IPv4 multicast sender or IPv6 multicast sender, is used for sending data to IPv4 multicast recipient or IPv6 multicast recipient.Receive and join message or 101 pairs of messages of leave message post-processing module are resolved, obtain the parameter information in the message, wherein, parameter information comprises IPv4 multicast group IP address or IPv6 multicast group IP address and VLAN (Virtual Local AreaNetwork at least, VLAN) ID (identifier), and can be according to receiving described join message or the port of leave message obtains this and receives described joining message or the port numbers of the port of leave message.VLAN ID is the ID of the VLAN at port numbers place, has a plurality of VLAN on the two-layer equipment, can distinguish by VLANID.Behind the analytic message,

101 is searched the set of first list item or search the set of second list item in MLD Snooping according to the multicast group IP address that parses in the message in IGMP Snooping, the set of first list item is corresponding to IPv4, and second list item is gathered corresponding to IPv6.Preferable, first list item can be an IGMP Snooping list item in the embodiment of the invention, second list item can be a MLD Snooping list item.Every IGMP Snooping list item comprises multicast group IP address, VLAN ID that parses in the message and the port numbers of receiving the port of described message, and three's corresponding relation, every MLD Snooping list item comprises multicast group IP address, VLAN ID that parses in the message and the port numbers that receives the port of described message, and three's corresponding relation.Form the set of first list item corresponding to all first list items of a multicast group IP address, or be called IGMP Snooping list item set, form the set of second list item corresponding to all second list items of a multicast group IP address, or be called the set of MLD Snooping list item.Each IGMP Snooping list item during an IGMPSnooping list item is gathered, can be between each MLD Snooping list item during perhaps a MLDSnooping list item is gathered to linking relationship should be arranged, when inquiring about according to a multicast group IP address, can inquire the set of IGMP Snooping list item or the set of MLDSnooping list item that comprise this multicast group IP address, wherein comprise all and comprised the IGMPSnooping list item or the MLDSnooping list item of this multicast group IP address.If set of IGMPSnooping list item or the set of MLD Snooping list item corresponding to this multicast group IP address are sky, then

101 is according to this multicast group IP address creation IGMP Snooping list item or MLD Snooping list item, if do not receive the pairing IGMP Snooping of the port numbers list item of the port of described message in the IGMP Snooping list item set corresponding to this multicast group IP address, then

101 is created an IGMPSnooping list item according to this multicast group IP address and the port numbers that receives the port of described message in the set of this IGMP Snooping list item, if corresponding to the pairing MLD Snooping of the port numbers list item that does not receive the port of described message in the set of the MLD Snooping list item of this multicast group IP address, then

101 is created a MLD Snooping list item according to this multicast group IP address and the port numbers that receives the port of described message in this MLD Snooping list item set.Wherein,

101 safeguards that all IGMP Snooping list items set among the IGMP Snooping and all the MLD Snooping list items among the MLD Snooping gather.

102 is used for upgrading public mac address table according to the multicast mac address that obtains.The multicast mac address storage and uniform that multicast mac address that

102 obtains the multicast group IP map addresses in the IGMP Snooping list item and the multicast group IP map addresses in the MLD Snooping list item obtain is in a public mac address table, and in public mac address table, set up the MAC forwarding entry according to each MAC Address, each multicast mac address can corresponding a plurality of MAC forwarding entrys, can form a multicast MAC forwarding entry set corresponding to all MAC forwarding entrys of a multicast mac address.Comprise MAC Address and port numbers in each MAC forwarding entry.Port numbers is the port numbers that receives the port of the message of IPv4 multicast recipient transmission or the message that IPv6 multicast recipient sends.Described port numbers is to add in the MAC forwarding entry according to VLAN ID in IGMP Snooping list item or the MLD Snooping list item and port numbers, can know IPv4 multicast recipient or IPv6 multicast recipient's accurate position according to the multicast mac address in the MAC forwarding entry and port numbers.After this, if

101 is received data message, the multicast group IP address that parses in the data message to be comprised,

102 is a multicast mac address with this multicast group IP map addresses, and inquire about in the public mac address table corresponding multicast MAC forwarding entry set according to the MAC Address that mapping obtains, carry out data forwarding, the set of corresponding multicast MAC forwarding entry be meant that the MAC Address that comprised in this MAC forwarding entry and described mapping obtain MAC Address identical.

103 is used for when obtaining the multicast group IP address of IPv4 version, is multicast media access control MAC address with the multicast group IP map addresses of the IPv4 version that obtains; When obtaining the multicast group IP address of IPv6 version, be multicast mac address with the multicast group IP map addresses of the IPv6 version that obtains.The IP address is an example with multicast group IP address in the embodiment of the invention.IGMP Snooping list item or MLD Snooping list item that

103 obtains in the

101 have comprised multicast group IP address, VLAN ID and port numbers in this IGMP Snooping list item or the MLD Snooping list item.

103 is multicast mac address according to IP address and the IP address of fixedly mapping relations between the MAC Address or IPv6 version and the fixedly mapping relations between the MAC Address of IPv4 version with the multicast group IP map addresses in multicast group IP address in the IGMP Snooping list item or the MLD Snooping list item.Wherein, mapping relations can be functions, determined a kind of fixing account form,

103 will can obtain multicast mac address in the IP address of the IP address substitution IPv4 version of IPv4 version and the fixedly mapping relations between the MAC Address, or will can obtain multicast mac address in the IP address of the IP address substitution IPv6 version of IPv6 version and the fixedly mapping relations between the MAC Address.The VLAN ID that comprises in IGMP Snooping list item or the MLD Snooping list item can be stored in the

102, can determine to receive the port numbers of the port of the message that message that IPv4 multicast recipient sends or IPv6 multicast recipient send according to the port numbers that comprises in this VLAN ID and IGMP Snooping list item or the MLD Snooping list item, therefore in the MAC forwarding entry, not comprise VLAN ID.For example, a MAC forwarding entry is:

Wherein, the multicast mac address of 3333.0000.0001 for obtaining after the multicast group IP address ff4e::1 mapping.Because after the pairing IP map addresses of IPv4 all is to start with 01005e, all be with 3333 beginnings after the pairing IP map addresses of IPv6, therefore the MAC Address that obtains after IPv4 pairing IP address and the pairing IP map addresses of IPv6 can be not identical, can not clash when then the two is stored in

1022.

Referring to Fig. 2, described device also comprises

104, and described device can also comprise

105.

104 is used to receive message, and transmitting-receiving IGMP Snooping list item or MLD Snooping list

104 is used to receive joining message or leave message of IPv4 multicast recipient or IPv6 multicast recipient transmission.After

104 is received message, judging the protocol type of the message of receiving, is IPv4 agreement or IPv6 agreement, resolves according to the corresponding units in the protocol type

101 again.

104 is used to receive IGMP Snooping list item or MLD Snooping list

104 also is used for the multicast mac address inquiry existing MAC forwarding entry that the multicast group IP map addresses according to data message goes out, find the multicast MAC forwarding entry set corresponding with this multicast mac address, according to the port numbers in the set of this multicast MAC forwarding entry the data forwarding that the IPv4 multicast sender sends is arrived IPv4 multicast recipient, or the data forwarding that the IPv6 multicast sender sends is arrived IPv6 multicast recipient.

105 is used for the Storage Mapping

105 is used for IP address and the IP address of fixedly mapping relations between the MAC Address and IPv6 version and the fixedly mapping relations between the MAC Address of storing IP v4 version, these two kinds of mapping relations can be stored respectively.

102 can be a multicast mac address with multicast group IP address in the IGMP Snooping list item or the multicast group IP map addresses in the MLDSnooping list item according to the IP address of the IPv4 version of storage or the IP address and the fixedly mapping relations between the MAC Address of IPv6 version in the

105.

Referring to Fig. 3 A, described

101 specifically comprises

1011,

1012,

1013,

1014, first creating

1015 and second creating unit 1016.Wherein,

1011,

1013, and first creating

1015 be equipment corresponding to IPv4, and

1012,

1014 and second creating

1016 are the equipment corresponding to IPv6.In embodiments of the present invention, in the

101 to IPv4 join message for example all to send the message that adds multicast group 224.1.1.1 with IPv4 multicast recipient be example, the message that all sends adding multicast group ff4e::1 with IPv4 multicast recipient for example that IPv6 is joined message is an example.

1011 is used for the message that IPv4 multicast recipient sends is resolved.

104 is after receiving message, and the protocol type of judging this message is IPv4 version or IPv6 version, when the protocol type of determining this message is the IPv4 version, notifies

1011 to resolve.

1011 is judged that this message joins message or leave message, and is parsed the parameter information that is comprised in this message after receiving the message that IPv4 multicast recipient sends.Wherein, this parameter information comprises multicast group IP address and VLAN ID at least, can obtain to receive the port numbers of the port of this message when receiving described message.Multicast group IP address can corresponding a plurality of port numbers, and a VLAN ID can corresponding a plurality of port numbers.For example, after

1011 is received message, determine that the port numbers of the port of this message of reception is a port one, the message parameter information that parses is:

1012 is used for the message that IPv6 multicast recipient sends is resolved.

104 is after receiving message, and the protocol type of judging this message is IPv4 version or IPv6 version, when the protocol type of determining this message is the IPv6 version, notifies

1012 to resolve.

1012 judges that this message joins message or leave message parses the parameter information that is comprised in this message after receiving the message that IPv6 multicast recipient sends.Wherein, this parameter information comprises that at least multicast group IP address and VLAN ID receive the port numbers of the port of this message.Multicast group IP address can corresponding a plurality of port numbers, and a VLAN ID can corresponding a plurality of port numbers.For example, the message parameter information that parses of

1022 is:

1013 is used for according to the multicast group IP address lookup IGMP Snooping list item that parses.

1013 is safeguarded all IGMP Snooping list items, all IGMPSnooping list items can be stored for inquiring about and calling.Behind the parameter information that

1011 parses in the message to be comprised, notify

1013 to inquire about.If join message, the multicast group IP address lookup that is comprised in the message information that

1013 parses according to

1011 and judge in the IGMP Snooping list item of storage whether the IGMP Snooping list item set that has comprised this multicast group IP address is arranged, if judged result is for denying, then notify first creating

1015 to create an IGMP Snooping list item according to this multicast group IP address and the port numbers that receives the described port that joins message, this IGMP Snooping list item is promptly formed the IGMP Snooping list item set corresponding to this multicast group IP address, if judged result is for being, judge that then the port numbers that whether has in this IGMP Snooping list item set in the IGMP Snooping list item is for receiving the port numbers of the described port that joins message, if have the port numbers in the IGMP Snooping list item identical in this IGMP Snooping list item set with the port numbers that receives the described port that joins message, then directly this IGMP Snooping list item is sent to

102, if there is not the port numbers in the IGMP Snooping list item identical in the set of this IGMP Snooping list item, then notify first creating

101 according to this multicast group IP address and receive port numbers IGMP Snooping list item of establishment in this IGMPSnooping list item set of the described port that joins message with the port numbers that receives the described port that joins message; If leave message, the multicast group IP address lookup that is comprised in the message information that

1013 parses according to

1011 and judge in the IGMP Snooping list item of storage whether the IGMP Snooping list item set that has comprised this multicast group IP address is arranged, if judged result is for denying, then do not carry out any operation, if judged result is for being, whether then judge in this IGMP Snooping list item set has the port numbers in the IGMP Snooping list item identical with the port numbers of the port that receives described leave message, if do not have the port numbers in the IGMP Snooping list item identical in this IGMP Snooping list item set with the port numbers of the port that receives described leave message, then do not carry out any operation, if there is the port numbers of the port that port numbers and the described adding of reception in the IGMPSnooping list item leave identical in the set of this IGMP Snooping list item, then delete this port numbers, and delete this IGMP Snooping list item.If this IGMP Snooping list item set is then deleted this IGMP Snooping list item set for empty after deleting this IGMP Snooping list item.

1014 is used for according to the multicast group IP address lookup MLD Snooping list item that parses.

1014 is safeguarded all MLD Snooping list items, all MLDSnooping list items can be stored for inquiring about and calling.Behind the parameter information that

1012 parses in the message to be comprised, notify

1014 to inquire about.If join message, the multicast group IP address lookup that is comprised in the message information that

1014 parses according to

1012 and judge in the MLD Snooping list item of storage whether the MLD Snooping list item set that has comprised this multicast group IP address is arranged, if judged result is for denying, then notify second creating

1016 to create a MLDSnooping list item according to this multicast group IP address and the port numbers that receives the described port that joins message, this MLD Snooping list item is promptly formed the MLDSnooping list item set corresponding to this multicast group IP address, if judged result is for being, judge that then the port numbers that whether has MLD Snooping list item to be comprised in this MLD Snooping list item set is identical with the port numbers that receives the described port that joins message, if the port numbers that has MLD Snooping list item to be comprised in this MLD Snooping list item set is identical with the port numbers that receives the described port that joins message, then directly this MLD Snooping list item is sent to

102, if the port numbers that does not have MLD Snooping list item to be comprised in the set of this MLD Snooping list item is identical with the port numbers that receives the described port that joins message, then notify second creating

1016 according to this multicast group IP address and receive port numbers MLD Snooping list item of establishment in this MLD Snooping list item set of the described port that joins message; If leave message, the multicast group IP address lookup that is comprised in the message information that

1014 parses according to

1012 and judge in the MLD Snooping list item of storage whether the MLD Snooping list item set that has comprised this multicast group IP address is arranged, if judged result is for denying, then do not carry out any operation, if judged result is for being, judge that then the port numbers that whether has MLD Snooping list item to be comprised in this MLD Snooping list item set is identical with the port numbers of the port that receives described leave message, if the port numbers that does not have MLD Snooping list item to be comprised in this MLDSnooping list item set is identical with the port numbers of the port that receives described leave message, then do not carry out any operation, if the port numbers that has MLD Snooping list item to be comprised in this MLD Snooping list item set is identical with the port numbers of the port that receives described leave message, then delete this port numbers, and delete this MLD Snooping list item.If after deleting this MLDSnooping list item, this MLD Snooping list item set is then deleted this MLD Snooping list item set for empty.

First creating

1015 is used to create IGMP Snooping list item.If

1013 is judged the IGMP Snooping list item set that does not comprise the multicast group IP address that is comprised in the message that parses in the IGMP Snooping list item of storage, the IGMP Snooping list item that does not perhaps comprise the port numbers of the port that receives described message in the IGMP Snooping list item set corresponding to the multicast group IP address that is comprised in the message that parses, then first creating

1015 is created an IGMP Snooping list item according to the port numbers of multicast group IP address that is comprised in this message that parses and the port that receives described message, comprise the multicast group IP address that is comprised in the message that parses in this IGMP Snooping list item, VLAN ID and receive the port numbers port numbers of the port of described message sends to

102 with this IGMP Snooping list item again.For example, the IGMP Snooping list item of this establishment can be as follows:

Second creating

1016 is used to create MLD Snooping list item.If

1014 is judged the MLD Snooping list item set that does not comprise the multicast group IP address that is comprised in the message that parses in the MLD Snooping list item of storage, the MLD Snooping list item that does not perhaps comprise the port numbers of the port that receives described message in the MLD Snooping list item set corresponding to the multicast group IP address that is comprised in the message that parses, then second creating

1016 is created a MLD Snooping list item according to the port numbers of multicast group IP address that is comprised in this message that parses and the port that receives described message, comprise the multicast group IP address that is comprised in the message that parses in this MLD Snooping list item, VLANID and port numbers send to

102 with this MLD Snooping list item again.For example, the MLD Snooping list item of this establishment can be as follows:

Referring to Fig. 3 B, specifically comprise

1021 and

1022 in the described Executive Module 102.Wherein,

102 can be realized by function.

1021 is used for adding or deletion MAC forwarding entry.Multicast mac address can corresponding many MAC forwarding entrys, and these many MAC forwarding entrys are formed a multicast MAC forwarding entry set corresponding to this multicast mac address, comprise a MAC Address and a port numbers in the MAC forwarding entry.If the message that

101 is received is for joining message, after the multicast group IP map addresses that

103 carries in message is multicast mac address, whether

1021 inquiry in the

102 and judging has the pairing multicast MAC of the multicast mac address forwarding entry after the multicast group IP map addresses in the joining message that this receives to gather in the existing MAC forwarding entry, if judged result is for denying, then create a multicast MAC forwarding entry according to the port numbers of carrying in this multicast mac address and first list item or second list item, this multicast MAC forwarding entry is formed a multicast MAC forwarding entry set corresponding to this multicast mac address, if judged result is for being, judge that then that whether the port numbers of carrying in port numbers that the MAC forwarding entry comprised and first list item or second list item is arranged in this multicast MAC forwarding entry set is identical, the port numbers of carrying in first list item or second list item is the port numbers of the described transmit leg that joins message, if there is the port numbers of carrying in port numbers that the MAC forwarding entry comprised and first list item or second list item identical in this multicast MAC forwarding entry set, then do not carry out any operation, if do not have the port numbers of carrying in port numbers that the MAC forwarding entry comprised and first list item or second list item identical in this multicast MAC forwarding entry set, then according to the port numbers of carrying in this multicast mac address and first list item or second list item MAC forwarding entry of interpolation in the set of this multicast MAC forwarding entry.If the message that

101 is received is a leave message, whether

1021 inquiry and judging has the pairing multicast MAC of the multicast mac address forwarding entry after the multicast group IP map addresses in the joining message that this receives to gather in the existing MAC forwarding entry, if judged result is for denying, then do not do any operation, if judged result is for being, judge then whether this multicast MAC forwarding entry set has the port numbers of carrying in port numbers that the MAC forwarding entry comprised and first list item or second list item identical, the port numbers of carrying in first list item or second list item is the port numbers that transmit leg is left in described adding, if there is the port numbers of carrying in port numbers that the MAC forwarding entry comprised and first list item or second list item identical in this multicast MAC forwarding entry set, then

1021 is deleted this port numbers in this multicast MAC forwarding entrys, and delete this MAC forwarding entry, if the set of this multicast MAC forwarding entry is for empty after deleting this MAC forwarding entry, then delete the set of this multicast MAC forwarding entry, if do not have the port numbers of carrying in port numbers that the MAC forwarding entry comprised and first list item or second list item identical in this multicast MAC forwarding entry set, then do not do any operation.

1022 is used for the storage and uniform MAC Address.

1022 comprises a public mac address table, wherein stored MAC Address,

103 all is stored in the public mac address table of

1022 after included multicast group IP map addresses is multicast mac address in multicast group IP address included in the IGMP Snooping list item or the MLD Snooping list item.All MAC forwarding entrys of creating according to MAC Address and port numbers have also been stored in the public mac address table.The VLAN ID that does not comprise destination interface in this MAC forwarding entry, i.e. the pairing VLAN ID of IPv4 multicast recipient or IPv6 multicast recipient, this VLAN ID can be stored in the address table.

Step 506: this IGMP Snooping list item is sent to Executive Module 102.Can the interface function that call

102 when specific implementation.If joining message of receiving in the step 501 is that IPv6 multicast recipient sends, then this step is for to send to

102 with this MLD Snooping list item.

Step 602: the IP address version of determining this MLD Snooping list item is IPv6.If what receive in the

601 is IGMP Snooping list item, then this step is IPv4 for the IP address version of determining this IGMP Snooping list item.

Step 603: the multicast group IP map addresses that comprises in the MLD Snooping list item is obtained multicast mac address.Wherein, the multicast group IP address of IPv6 version is 128, and the MAC Address that mapping obtains is 48.For example, the multicast mac address that obtains after the multicast group IP map addresses with ff4e::1 is 3333.0000.0001.If determine in the

602 that the IP address version of IGMP Snooping list item is IPv4, then this step is for to obtain multicast mac address with the multicast group IP map addresses that comprises in the IGMP Snooping list item.

Step 604: judge in already present MAC forwarding entry, whether to have and gather with the corresponding multicast MAC of this multicast mac address forwarding entry.Wherein, corresponding referring in the existing MAC forwarding entry has in the multicast MAC forwarding entry set pairing multicast mac address identical with this multicast mac address.When judged result when being, execution in

605, otherwise execution in

606.

Step 605: judge that whether the port numbers of carrying in port numbers that the MAC forwarding entry comprised and second list item is arranged in this multicast MAC forwarding entry set is identical.When judged result for not the time, continue

606, otherwise continue step 607.If what receive in the

601 is IGMP Snooping list item, then this step is to judge in this MAC forwarding entry set that multicast whether has the port numbers of carrying in port numbers that the MAC forwarding entry comprised and first list item identical.。

Step 607: this MLD Snooping list item is sent to

102.

Step 704:, judge whether to exist corresponding IGMP Snooping list item set according to this multicast group IP address.When judged result when being, execution in step 704, otherwise process ends.If determine in the

702 that this leave message is the IPv6 version, then this step is according to this multicast group IP address, judges whether to exist corresponding MLD Snooping list item.

Step 705: judge that the port numbers that whether has IGMP Snooping list item to be comprised in this IGMP Snooping list item set is identical with the port numbers of the port that receives described leave message.When judged result when being, execution in

706, otherwise process ends.

Step 707: judge whether this IGMP Snooping list item set is empty.When judged result when being, continue

708, otherwise process ends.

Step 802: the IP address version of determining this MLD Snooping list item is IPv6.If

801 is for obtaining the multicast group IP address in the IGMP Snooping list item, then this step is IPv4 for the IP address version of determining this IGMPSnooping list item.

Step 803: the multicast group IP map addresses that comprises in the MLD Snooping list item is obtained multicast mac address.Wherein, the multicast group IP address of IPv6 version is 128, and the multicast mac address that mapping obtains is 48.For example, the multicast mac address that obtains after the multicast group IP map addresses with ff4e::1 is 3333.0000.0001.If determine in the

602 that the IP address version of IGMP Snooping list item is IPv4, then this step is for to obtain multicast mac address with the multicast group IP map addresses that comprises in the IGMP Snooping list item.

Step 804: judge in already present MAC forwarding entry, whether to have and gather with this multicast group IP address corresponding multicast MAC forwarding entry.Wherein, corresponding referring in the existing MAC forwarding entry has the MAC Address that comprises in the MAC forwarding entry identical with this multicast mac address.When judged result when being, execution in

805, otherwise process ends.

Step 805: judge that whether the port numbers of carrying in port numbers that multicast MAC forwarding entry comprised and second list item is arranged in the set of this MAC forwarding entry is identical.When judged result when being, execution in

806, otherwise process ends.

Step 807: judge whether the set of this multicast MAC forwarding entry is empty.When judged result when being, execution in

808, otherwise process ends.

1. a MAC Address update method is characterized in that, may further comprise the steps:

Obtain the multicast group IP address of Internet Protocol Version 4 IPv4 version or the multicast group IP address of IPv6 IPv6 version according to the message of receiving;

When obtaining the multicast group IP address of IPv4 version, be multicast media access control MAC address with the multicast group IP map addresses of the IPv4 version that obtains; When obtaining the multicast group IP address of IPv6 version, be multicast mac address with the multicast group IP map addresses of the IPv6 version that obtains;

Upgrade public mac address table according to the multicast mac address that obtains.

2. the method for claim 1 is characterized in that, the described message of receiving is for joining message, and when obtaining the multicast group IP address of IPv4 version, is multicast media access control MAC address with the multicast group IP map addresses of the IPv4 version that obtains; When obtaining the multicast group IP address of IPv6 version, be also to comprise step before the multicast mac address with the multicast group IP map addresses of the IPv6 version that obtains:

When the multicast group IP address that obtains the IPv4 version according to the message of receiving, judge first list item set whether Internet group management protocol of the multicast group is spied upon has among the IGMP Snooping corresponding to the multicast group IP address of described IPv4 version, when judged result for not the time, comprise first list item of the port numbers of receiving the described port that joins message according to the multicast group IP address creation of IPv4 version;

When the multicast group IP address that obtains the IPv6 version according to the message of receiving, judge second list item set whether multicast listener discovery is spied upon has among the MLD Snooping corresponding to the multicast group IP address of described IPv6 version, when judged result for not the time, comprise second list item of the port numbers of receiving the described port that joins message according to the multicast group IP address creation of IPv6 version.

3. method as claimed in claim 2 is characterized in that,

When judgement defines first list item set corresponding to the multicast group IP address of described IPv4 version, judge that the port numbers that whether has first list item to be comprised in described first list item set is identical with the port numbers of receiving the described port that joins message, when the port numbers that does not have first list item to be comprised in described first list item set is identical with the port numbers of receiving the described port that joins message, comprise first list item of the port numbers of receiving the described port that joins message according to the multicast group IP address creation of described IPv4 version; Perhaps

When judgement defines second list item set corresponding to the multicast group IP address of described IPv6 version, judge that the port numbers that whether has second list item to be comprised in described second list item set set is identical with the port numbers of receiving the described port that joins message, when the port numbers that does not have first list item to be comprised in described second list item set is identical with the port numbers of receiving the described port that joins message, comprise second list item of the port numbers of receiving the described port that joins message according to the multicast group IP address creation of described IPv6 version.

4. as claim 2 or 3 described methods, it is characterized in that, the described message of receiving is for joining message, the step of upgrading public mac address table according to the multicast mac address that obtains comprises: judge the multicast MAC forwarding entry set that whether has in the public mac address table corresponding to the multicast mac address of described acquisition, when judged result for not the time, create the MAC forwarding entry that comprises the port numbers of carrying in described first list item or second list item according to the multicast mac address that obtains, when judged result when being, judge that whether the port numbers of carrying in port numbers that the MAC forwarding entry comprised and described first list item or second list item is arranged in the set of described multicast MAC forwarding entry is identical, when the port numbers of carrying in the port numbers that does not have the MAC forwarding entry to be comprised in the set of described multicast MAC forwarding entry and described first list item or second list item was identical, interpolation in described multicast MAC forwarding entry set comprised the MAC forwarding entry of the port numbers of carrying in described first list item or second list item according to described multicast mac address.

5. the method for claim 1 is characterized in that, the described message of receiving is a leave message, when obtaining the multicast group IP address of IPv4 version, is multicast media access control MAC address with the multicast group IP map addresses of the IPv4 version that obtains; When obtaining the multicast group IP address of IPv6 version, be also to comprise step before the multicast mac address with the multicast group IP map addresses of the IPv6 version that obtains:

Judge first list item set that whether has among the IGMP Snooping corresponding to the multicast group IP address of described IPv4 version, when judged result when being, judge that the port numbers that whether has first list item to be comprised in described first list item set is identical with the port numbers of the port of receiving described leave message, when the port numbers that first list item port numbers that is comprised and the port of receiving described leave message are arranged in described first list item set is identical, this port numbers of deletion in described first list item, and delete described first list item; Perhaps

Judge second list item set that whether has among the MLD Snooping corresponding to the multicast group IP address of described IPv6 version, when judged result when being, judge that the port numbers that whether has second list item to be comprised in described second list item set is identical with the port numbers of the port of receiving described leave message, when the port numbers that second list item port numbers that is comprised and the port of receiving described leave message are arranged in described second list item set is identical, in this port numbers of middle deletion of described second list item, and delete described second list item.

6. method as claimed in claim 5 is characterized in that, also comprises step:

Judge whether the set of described first list item is empty, when judged result when being, delete described first list item and gather; Perhaps

Judge whether the set of described second list item is empty, when judged result when being, delete described second list item and gather.

7. as claim 5 or 6 described methods, it is characterized in that, the described message of receiving is a leave message, the step of upgrading public mac address table according to the multicast mac address that obtains comprises: judge whether the multicast MAC forwarding entry set corresponding to the multicast mac address of described acquisition, when judged result when being, judge that whether the port numbers of carrying in port numbers that the MAC forwarding entry comprised and described first list item or second list item is arranged in the set of described multicast MAC forwarding entry is identical, when the port numbers of carrying in the port numbers that has the MAC forwarding entry to be comprised in the set of described multicast MAC forwarding entry and described first list item or second list item is identical, this port numbers of deletion in described MAC forwarding entry, and delete described MAC forwarding entry; Continuation judges whether described multicast MAC forwarding entry set is empty, when described multicast MAC forwarding entry set is sky, deletes described multicast MAC forwarding entry set.

8. a method of multicasting is characterized in that, may further comprise the steps:

Obtain the multicast group IP address of IPv4 version or the multicast group IP address of IPv6 version according to the message of receiving;

When obtaining the multicast group IP address of IPv4 version, be multicast media access control MAC address with the multicast group IP map addresses of the IPv4 version that obtains; When obtaining the multicast group IP address of IPv6 version, be multicast mac address with the multicast group IP map addresses of the IPv6 version that obtains;

In public mac address table, inquire about and described multicast mac address corresponding port number according to described multicast mac address, carry out data forwarding according to described port numbers.

9. a MAC Address updating device is characterized in that, comprising:

Processing module is used for obtaining the multicast group IP address of IPv4 version or the multicast group IP address of IPv6 version according to the message of receiving;

Modular converter is used for when obtaining the multicast group IP address of IPv4 version, is multicast media access control MAC address with the multicast group IP map addresses of the IPv4 version that obtains; When obtaining the multicast group IP address of IPv6 version, be multicast mac address with the multicast group IP map addresses of the IPv6 version that obtains;

Executive Module is used for upgrading public mac address table according to the multicast mac address that obtains.

10. device as claimed in claim 9, it is characterized in that, the described message of receiving is for joining message, described processing module also is used for when the multicast group IP address that obtains the IPv4 version according to the message of receiving, judge first list item set whether Internet group management protocol of the multicast group is spied upon has among the IGMP Snooping corresponding to the multicast group IP address of described IPv4 version, when judged result for not the time, comprise first list item of the port numbers of receiving the described port that joins message according to the multicast group IP address creation of IPv4 version; When the multicast group IP address that obtains the IPv6 version according to the message of receiving, judge second list item set whether multicast listener discovery is spied upon has among the MLD Snooping corresponding to the multicast group IP address of described IPv6 version, when judged result for not the time, comprise second list item of the port numbers of receiving the described port that joins message according to the multicast group IP address creation of IPv6 version.

11. device as claimed in claim 10, it is characterized in that, described processing module also is used for when judging first list item set define corresponding to the multicast group IP address of described IPv4 version, judge that the port numbers that whether has first list item to be comprised in described first list item set is identical with the port numbers of receiving the described port that joins message, when the port numbers that does not have first list item to be comprised in described first list item set is identical with the port numbers of receiving the described port that joins message, comprise first list item of the port numbers of receiving the described port that joins message according to the multicast group IP address creation of described IPv4 version; Perhaps when judging second list item set define corresponding to the multicast group IP address of described IPv6 version, judge that the port numbers that whether has second list item to be comprised in described second list item set is identical with the port numbers of receiving the described port that joins message, when the port numbers that does not have first list item to be comprised in described second list item set is identical with the port numbers of receiving the described port that joins message, comprise second list item of the port numbers of receiving the described port that joins message according to the multicast group IP address creation of described IPv6 version.

12. as claim 10 or 11 described devices, it is characterized in that, the described message of receiving is for joining message, described Executive Module is used for judging whether public mac address table has the multicast MAC forwarding entry set corresponding to the multicast mac address of described acquisition, when judged result for not the time, create the MAC forwarding entry that comprises the port numbers of carrying in described first list item or second list item according to the multicast mac address that obtains, when judged result when being, judge that whether the port numbers of carrying in port numbers that the MAC forwarding entry comprised and described first list item or second list item is arranged in the set of described multicast MAC forwarding entry is identical, when the port numbers of carrying in the port numbers that does not have the MAC forwarding entry to be comprised in the set of described multicast MAC forwarding entry and described first list item or second list item was identical, interpolation in described multicast MAC forwarding entry set comprised the MAC forwarding entry of the port numbers of carrying in described first list item or second list item according to described multicast mac address.

13. device as claimed in claim 9, it is characterized in that, the described message of receiving is a leave message, described processing module is used for also judging whether IGMP Snooping has first list item set corresponding to the multicast group IP address of described IPv4 version, when judged result when being, judge that the port numbers that whether has first list item to be comprised in described first list item set is identical with the port numbers of the port of receiving described leave message, when the port numbers that first list item port numbers that is comprised and the port of receiving described leave message are arranged in described first list item set is identical, this port numbers of deletion in described first list item, and delete described first list item; Perhaps judge second list item set that whether has among the MLD Snooping corresponding to the multicast group IP address of described IPv6 version, when judged result when being, judge that the port numbers that whether has second list item to be comprised in described second list item set is identical with the port numbers of the port of receiving described leave message, when the port numbers that second list item port numbers that is comprised and the port of receiving described leave message are arranged in described second list item set is identical, this port numbers of deletion in described second list item, and delete described second list item.

14. device as claimed in claim 13 is characterized in that, described processing module is used to also judge whether the set of described first list item is empty, when judged result when being, delete described first list item and gather; Judge perhaps whether the set of described second list item is empty, when judged result when being, delete described second list item and gather.

15. as claim 13 or 14 described devices, it is characterized in that, the described message of receiving is a leave message, described Executive Module is used to judge whether the multicast MAC forwarding entry set corresponding to the multicast mac address of described acquisition, when judged result when being, judge that whether the port numbers of carrying in port numbers that the MAC forwarding entry comprised and described first list item or second list item is arranged in the set of described multicast MAC forwarding entry is identical, the port numbers of carrying in the port numbers that has the MAC forwarding entry to be comprised in the set of described multicast MAC forwarding entry and described first list item or second list item is identical, this port numbers of deletion in described multicast MAC forwarding entry, and delete described MAC forwarding entry; Continuation judges whether described multicast MAC forwarding entry set is empty, when described multicast MAC forwarding entry set is sky, deletes described multicast MAC forwarding entry set.

16. a multicast apparatus is characterized in that, comprising:

Processing module is used for obtaining the multicast group IP address of IPv4 version or the multicast group IP address of IPv6 version according to the message of receiving;

Modular converter is used for when obtaining the multicast group IP address of IPv4 version, is multicast media access control MAC address with the multicast group IP map addresses of the IPv4 version that obtains; When obtaining the multicast group IP address of IPv6 version, be multicast mac address with the multicast group IP map addresses of the IPv6 version that obtains;

Executive Module is used for according to described multicast mac address carrying out data forwarding in the inquiry of public mac address table and described multicast mac address corresponding port number according to described port numbers.