CN107547334A - A kind of message forwarding method and device - Google Patents
A kind of message forwarding method and device Download PDFInfo
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- CN107547334A CN107547334A CN201610513688.2A CN201610513688A CN107547334A CN 107547334 A CN107547334 A CN 107547334A CN 201610513688 A CN201610513688 A CN 201610513688A CN 107547334 A CN107547334 A CN 107547334A
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- unicast message
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Abstract
The invention provides a kind of message forwarding method and device, applied to the port expander of extension bridge system, wherein, this method includes：The first unicast message with extension virtual local area network tags is received by uplink port；The exit port information for identifying the extension virtual local area network tags of the first unicast message is the mark of aggregation port；The extension virtual local area network tags of the first unicast message are divested, are sent by the ECP Extended Capabilities Port for belonging to aggregation port.
Description
Technical field
The present invention relates to communication technical field, in particular relates to a kind of message forwarding method and device.
Background technology
Extend bridge (Extended Bridge) by control bridge (CB, Controlling Bridge) and
Port expander (PE, Port Extender) is formed.Control bridge can be individual equipment or multiple set
The standby stack equipment as an equipment operation formed.
In a kind of extension bridge shown in Fig. 1, a uplink port (upstream of each port expander
Port it is) corresponding with controlling cascade port (Cascade Port) of bridge to connect, port expander
One ECP Extended Capabilities Port (Extended Port) is connected with a port of terminal (End Station).
When port expander receives uplink message by ECP Extended Capabilities Port, ETAG (Extension VLAN are added
Tag, extend virtual local area network tags), according to the ETAG of the ECP Extended Capabilities Port of the message received ECID
For indicating the inbound port (ingress port) of message, and sent by uplink port and with the addition of ETAG
Message.
When port expander receives the downlink message with ETAG by uplink port, referred to by ECID
The exit port (egress port) shown sends the message for divesting ETAG.
The content of the invention
It is an object of the invention to provide a kind of message forwarding method and device, expands the port of extension bridge
Exhibition device is by belonging to the ECP Extended Capabilities Port of aggregation port, the unicast message of the terminal connected to aggregation port.
To achieve the above object, the invention provides a kind of message forwarding method, this method to include：By up
Port receives the first unicast message with extension virtual local area network tags；Identify the extension of the first unicast message
The exit port information of virtual local area network tags is the mark of aggregation port；The extension for divesting the first unicast message is empty
Intend Local Area Network tag, sent by the ECP Extended Capabilities Port for belonging to aggregation port..
Present invention also offers a kind of apparatus for forwarding message, the device includes：Receiving unit, pass through uplink port
Receive the first unicast message with extension virtual local area network tags；Recognition unit, identify the first unicast message
Extension virtual local area network tags exit port information carry aggregation port mark；Retransmission unit, divest
The extension virtual local area network tags of one unicast message, sent by the ECP Extended Capabilities Port for belonging to aggregation port.
The port expander of extension bridge is realized by belonging to the expansion of aggregation port by the above method and device
Share the unicast message for being sent to terminal in exhibition port.
Brief description of the drawings
Fig. 1 show the structural representation for having extended bridge.
Fig. 2A -2B are the schematic diagram of the extension bridge of the embodiment of the present invention.
Fig. 3 is comprising the network diagram that bridge is extended shown in Fig. 2A -2B.
Fig. 4 A-4D are that unicast message forwards schematic diagram in network shown in Fig. 3.
Fig. 5 A-5D are that broadcasting packet forwards schematic diagram in network shown in Fig. 3.
Fig. 6 is the schematic diagram of the apparatus for forwarding message applied to Fig. 2A -2B middle port expanders.
Embodiment
Fig. 2A shows the extension bridge 26 that present example provides.Equipment 23 and 24 is by stacking chain
Road connects, and forms a stack equipment as control bridge 25.The uplink port 211 of port expander 21
With 212 ports 231 for connecting equipment 23 respectively and the port 241 of equipment 24；Port expander 22
Uplink port 221 and 222 connects the port 232 of equipment 23 and the port 242 of equipment 24 respectively.Control
Bridge 25 and port expander 21 and 22 processed constitute extension bridge 26；The expansion of port expander 21
Open up port 213 and the ECP Extended Capabilities Port 223 of port expander 22 forms aggregation port 200, the aggregation port
200 link aggregation groups (LAG, Link Aggregation Group) being made up of link 201 and 202
Connect (End Station) terminal 27.
As shown in 2B, control bridge 25 has cascade port 251, cascade port 252 and cascade end
Mouth 253.Cascade port 251 and include port 231 and 241 and the cascade connectivity port expander of port 251
21 two uplink ports.Cascade port 252 includes port 232 and 242 and connectivity port expander 22
Two uplink ports.Port 253 is cascaded to include port 231,241,232 and 242 and connect poly-
Close four uplink ports of the port expander 21 and 22 at the place of port 200.
Control bridge 25 that the virtual port (VP, Virtual Port) 261 of ECP Extended Capabilities Port 213 is set (in figure
Do not show), distribution E-213 is as the E-channel's between instruction virtual port 261 and ECP Extended Capabilities Port 213
ECID.Control bridge 25 that the (not shown) of virtual port 262 of ECP Extended Capabilities Port 223 is set, distribute E-223
ECID as the E-channel between instruction virtual port 262 and ECP Extended Capabilities Port 223.Control bridge 25
The (not shown) of virtual port 263 of aggregation port 200 is set, and distribution E-200 is as instruction virtual port
E-channel ECID between 263 and aggregation port 200.
E-213, E-223 and the E-200 that control bridge 25 distributes belong to global name space and belonged to
Point-to-point E-channel scope.
E-213 and cascade port 251 are associated with virtual port 263 by control bridge 25；By E-223 and
Cascade port 252 is associated with virtual port 263；Virtual port 263 is associated with E-200 and cascade end
Mouth 253.
In network shown in Fig. 3, control bridge 25 connects terminal by double layer network (not shown)
28, the ECP Extended Capabilities Port 224 of port expander 22 connects terminal 29 by link 204.For example, terminal
27th, during the 28 and 29 same VLAN of reception broadcasting packet, control bridge 25 can be ECP Extended Capabilities Port
213rd, 223 and 224 distribution broadcast ECID, for indicating a virtual port on control bridge 25
With the E-channel between ECP Extended Capabilities Port 213,223 and 224.Port expander 21 and 22 is by upper
Row port receives the Ethernet broadcasting packet with ETAG, identifies ETAG ECID and includes extension end
The mark of mouth 213,223,224.For example, terminal 27,28 and 29 receives the group of same multicast group
When reporting literary, control bridge 25 can be that ECP Extended Capabilities Port 213,223 and 224 distributes multicast ECID,
Between a virtual port and ECP Extended Capabilities Port 213,223 and 224 on instruction control bridge 25
E-channel.Enlarging expander 21 and 22 receives the multicast message with ETAG by uplink port,
Identification ETAG ECID includes the mark of ECP Extended Capabilities Port 213,223,224.Control bridge 25 can be with
Network application based on 802.1BR agreements and correlation distributes broadcast ECID or multicast ECID, this hair
It is bright to repeat no more.
Based on the network shown in Fig. 3 and Fig. 4 A-4D, description extension bridge 26 handles unicast message
Process.
Up unicast message processing
In Fig. 4 A, terminal 27 generates Ethernet unicast message 40, wherein, source MAC and purpose
MAC Address is the MAC Address of terminal 27 and the MAC Address of terminal 28 respectively.Terminal 27 can be with
Selection port 272 sends Ethernet unicast message from port 271 and 272.
Port expander 22 receives Ethernet unicast message 40 by ECP Extended Capabilities Port 223, based on extension end
The E-223 addition ETAG of mouth 223, select uplink port 222 to send out in uplink port 221 and 222
Send.As shown in Figure 4 A, the ETAG for the unicast message 41 that port expander 22 is sent ECID category
Property is E-223, and the ECP Extended Capabilities Port 223 for indicating aggregation port 200 is inbound port.
Control bridge 25 receives unicast message 41 by cascading the port 242 of port 252, does not find
The MAC Address list item of VLAN ID and the source MAC matching of unicast message 41, according to unicast
VLAN ID (VLAN ID), source MAC and the virtual port 263 of message 41 are learned
Practise MAC Address list item.Control bridge 25 can be according to cascade port 252 and E-223 and virtual port 263
Incidence relation, be identified by virtual port 263 and receive unicast message 41, thus be based on virtual port 263
Perform MAC address entries study.
Control bridge 25 find unicast message 41 VLAN ID and target MAC (Media Access Control) address matching
MAC Address list item, it is non-ECP Extended Capabilities Port to determine exit port, removes ETAG, passes through the MAC found
The exit port of address list item is sent.As shown in Figure 4 A, bridge 25 is controlled to remove the ETAG of unicast message 41
Afterwards, Ethernet unicast message 40 is obtained.So, Ethernet unicast message 40 passes through double layer network (Fig. 3
In do not show) be sent to terminal 28.
In Fig. 4 B, terminal 27 generates Ethernet unicast message 42, wherein, source MAC and purpose
MAC Address is the MAC Address of terminal 27 and the MAC Address of terminal 28 respectively.Terminal 27 can be with
The selection port 271 from port 271 and 272, send Ethernet unicast message 42.
Port expander 21 receives Ethernet unicast message 42 by ECP Extended Capabilities Port 213, based on extension end
The E-213 addition ETAG of mouth 213, select uplink port 212 to send out in uplink port 211 and 212
Send.As shown in Figure 4 B, the ETAG for the unicast message 43 that port expander 21 is sent ECID category
Property is E-223, to indicate that the ECP Extended Capabilities Port 213 of aggregation port 200 is inbound port.
Control bridge 25 receives unicast message 43 by cascading the port 241 of port 251, finds
The exit port of VLAN ID and the MAC Address list item of source MAC matching is virtual port 263,
MAC address learning is not performed then.Control bridge 25 can according to cascade port 252 and E-223 with it is virtual
The incidence relation of port 263, it is identified by virtual port 263 and receives unicast message 43.Control bridge 25
The exit port of the MAC address entries found according to unicast message 43 there is not side, therefore does not perform MAC Address
Study.
Control bridge 25 find unicast message 43 VLAN ID and target MAC (Media Access Control) address matching
MAC Address list item, ETAG is removed, sent by the exit port of the MAC Address list item of lookup.Such as
Shown in Fig. 4 B, control bridge 25 removes the ETAG of unicast message 43, obtains Ethernet unicast message
42.So Ethernet unicast message 42 is sent to terminal 28 by double layer network.
In the example shown in Fig. 4 A and Fig. 4 B, if control bridge 25 according to unicast message 41 or
The MAC address entries of 43 target MAC (Media Access Control) address matching determine that performing three layers forwards, then removes ETAG,
Forwarding is performed according to purpose IP address encapsulation.
Downlink unicast message forwards
In Fig. 4 C, terminal 28 generates Ethernet unicast message 44, wherein, source MAC and purpose
MAC Address is the MAC Address of terminal 28 and the MAC Address of terminal 27 respectively.
Control bridge 25 Ethernet unicast message 44 is received by double layer network, find VLAN ID and
The MAC Address list item and exit port of target MAC (Media Access Control) address matching are virtual ports 263, according to polymerization end
The E-200 addition ETAG of mouth 200, are sent by cascading port 253.As shown in Figure 4 C, net is controlled
The ECID attributes for the unicast message 45 that bridge 25 is sent are E-200, and it is to indicate aggregation port 200
Port.Bridge 25 is controlled to send unicast report from four ports selection a port of cascade port 253
Text 45.When controlling 25 selection port 231 or 241 of bridge, unicast message 45 is sent to port expansion
Open up device 21.
Port expander 21 receives unicast message 45 by uplink port 211 or 212, based on ECID
Attribute E-200 identification aggregation ports 200 are exit ports, remove ETAG, pass through aggregation port 200
ECP Extended Capabilities Port 213 is sent.As shown in Figure 4 C, port expander 21 sends Ethernet unicast message 44.
So, Ethernet unicast message 44 by the link 201 shown in Fig. 3 by transmission terminal 27.
In Fig. 4 D, terminal 28 generates Ethernet unicast message 46；Wherein, source MAC and purpose
MAC Address is the MAC Address of terminal 28 and the MAC Address of terminal 27 respectively.
Control bridge 25 receives Ethernet unicast message 46 by double layer network, searches VLAN ID and mesh
MAC Address matching MAC Address list item and exit port be virtual port 263, based on aggregation port
200 E-200 addition ETAG, are sent by cascading port 253.As shown in Figure 4 D, bridge is controlled
The ECID attributes of 25 unicast messages 47 sent are E-200, and instruction aggregation port is exit port.Work as control
Bridge 25 processed can from cascade port 253 four port selection ports 232 or 242 when, unicast message
47 are sent to port expander 22.
Port expander 22 receives unicast message 47 by uplink port 221 or 222, based on ECID
Attribute E-200 identification aggregation ports 200 are exit ports, remove ETAG, pass through aggregation port 200
ECP Extended Capabilities Port 223 is sent.Shown in Fig. 4 D, port expander 22 sends Ethernet unicast message 46 and arrived
To terminal 27.
Broadcasting packet forwards
Based on the network shown in Fig. 3 and Fig. 4 A-4D, description extension bridge 26 handles broadcasting packet
Process.
In Fig. 5 A, terminal 27 generates Ethernet broadcasting packet 50, and end is selected from port 271 and 272
Mouth 272 sends Ethernet broadcasting packets 50.
Port expander 22 receives Ethernet broadcasting packet 50 by ECP Extended Capabilities Port 223, based on extension end
The E-223 addition ETAG of mouth 223, select uplink port 221 to send out in uplink port 221 and 222
Send.As shown in Figure 5A, the ETAG for the broadcasting packet 51 that port expander 22 is sent ECID category
Property be E-223, instruction aggregation port 200 ECP Extended Capabilities Port 223 be inbound port.
Control bridge 25 receives broadcasting packet 51 by cascading the port 242 of port 252, according to port
The number of expander 21 and 22 replicates two parts of broadcasting packets, and the ECID of every part of copy broadcast message is set
To broadcast ECID, Ingress ECID are set to E-223, obtain two parts of broadcasting packets (such as Fig. 5 A institutes
The broadcasting packet 52 shown).Bridge 25 is controlled to select one from two ports of cascade port 251,
A broadcasting packet 52 is sent to port expander 21.Control bridge 25 can be from cascade port 252
Two ports select one, and another broadcasting packet 52 is sent to port expander 22.As shown in Figure 5A,
Bridge 25 is controlled to distinguish two parts of broadcasting packets 52 of selection port 241 and the transmission of port 242.
Control bridge 25 to remove the ETAG of the broadcasting packet 51 received, obtain Ethernet broadcasting packet
50, more parts of Ethernet broadcasting packets are replicated according to there is provided identical VLAN port number, by each
There is provided identical VLAN port to send a Ethernet unicast message 50.As shown in Figure 5A, it is a
Ethernet broadcasting packet 50 is sent to terminal 28 by double layer network.
Port expander 21 receives broadcasting packet 52 by uplink port 212, is known based on broadcast ECID
Other ECP Extended Capabilities Port 213 is exit port, and ECP Extended Capabilities Port 223 is identified based on Ingress ECID attributes E-223
It is inbound port, determines that inbound port and exit port belong to aggregation port 200, source filtering failure.Ports-Extending
Device 21 does not filter 27 Ethernet broadcasting packet of the ECP Extended Capabilities Port self terminal in 213 future of failure by source
50 beam back terminal 27 again.
Port expander 22 receives another broadcasting packet 52 by uplink port 222；Based on broadcast
ECID identification ECP Extended Capabilities Ports 223 and 224 are exit ports；Identified based on ingress ECID attributes E-223
ECP Extended Capabilities Port 223 is inbound port；The ECP Extended Capabilities Port 223 for being determined as one of exit port is exactly inbound port,
Source filtering checks failure；The ECP Extended Capabilities Port 224 for being determined as another exit port is different from inbound port and not belonged to
In aggregation port 200, source filtering checks successfully, removes ETAG, is sent by ECP Extended Capabilities Port 224.
As shown in Figure 5A, port expander 22 is wide by the Ethernet of ECP Extended Capabilities Port self terminal in 224 future 27
Report text 50 and be sent to terminal 29, and avoid coming the Ethernet broadcasting packet 50 of the 27 of self terminal again
Beam back terminal 27.
In Fig. 5 B, terminal 27 generates Ethernet broadcasting packet 53, and end is selected from port 271 and 272
Mouth 271 sends Ethernet broadcasting packets 53.
Port expander 21 receives Ethernet broadcasting packet 53 by ECP Extended Capabilities Port 213, based on extension end
The E-213 addition ETAG of mouth 213, select uplink port 211 to send out in uplink port 211 and 212
Send.As shown in Figure 5 B, the ETAG for the broadcasting packet 54 that port expander 22 is sent ECID category
Property be E-213, instruction aggregation port 200 ECP Extended Capabilities Port 213 be inbound port.
Control bridge 25 receives broadcasting packet 54 by cascading the port 241 of port 251, according to port
The number of expander 21 and 22 replicates two parts of broadcasting packets, and every part of broadcasting packet is indicated into exit port
ECID is set to broadcast ECID, and the Ingress ECID of the broadcasting packet of every part of duplication are set into E-213,
Two parts of broadcasting packets are obtained, broadcasting packet 55 as shown in Figure 5 B.As shown in Figure 5 B, bridge is controlled
The port 231 of 25 selection cascade ports 251 sends a broadcasting packet 55, selection cascade port 252
Port 232 send another broadcasting packet 55.
Control bridge 25 to remove the ETAG of the broadcasting packet 54 received, obtain Ethernet broadcasting packet
53, more parts of Ethernet broadcasting packets are replicated according to there is provided identical VLAN port number, by each
There is provided identical VLAN port to send a Ethernet unicast message 53.As shown in Figure 5 B, it is a
Ethernet broadcasting packet 53 is sent to terminal 28 by double layer network.
Port expander 21 receives broadcasting packet 55 by uplink port 211；Known based on broadcast ECID
Other ECP Extended Capabilities Port 213 is exit port；ECP Extended Capabilities Port 213 is identified based on Ingress ECID attributes E-213
It is inbound port；Determine that inbound port is identical with exit port, source filtering checks failure.Port expander 21 is obstructed
The 27 Ethernet broadcasting packet 53 for crossing the ECP Extended Capabilities Port self terminal in 213 future of source filtering failure is beamed back again
Terminal 27.
Port expander 22 receives another broadcasting packet 55 by uplink port 212, based on broadcast
ECID identification ECP Extended Capabilities Ports 223 and 224 are exit ports；Identified based on ingress ECID attributes E-213
ECP Extended Capabilities Port 213 is inbound port；The ECP Extended Capabilities Port 223 for being determined as one of exit port belongs to inbound port
Aggregation port 200, source filtering check failure；It is determined as 224 mouthfuls of the extension end difference of another exit port
In inbound port and aggregation port 200 is not belonging to, source filtering checks successfully, removes ETAG, passes through extension
Port 224 is sent.As shown in Figure 5 B, port expander 22 passes through ECP Extended Capabilities Port self terminal in 224 future
27 Ethernet broadcasting packet 53 is sent to terminal 29, and avoids coming 27 Ethernet of self terminal wide
Report text 53 and beam back terminal 27 again.
As shown in Figure 5 C, terminal 28 generates Ethernet broadcasting packet 56.Bridge 25 is controlled according to port
The number of expander 21 and 22 replicates Ethernet broadcasting packet 56, is every part of ether based on broadcast ECID
Net broadcasting packet 56 adds ETAG, and the port 241 of selection cascade port 251 sends a carrying broadcast
ECID broadcasting packet 57, the port 242 of selection cascade port 252 send a carry and broadcast ECID
Broadcasting packet 57.
Port expander 21 receives broadcasting packet 57 by uplink port 212；Known based on broadcast ECID
Other exit port is ECP Extended Capabilities Port 213, determines that inbound port is different from exit port and is not belonging to ECP Extended Capabilities Port
200, source filtering inspection passes through；Hash calculating is carried out to broadcasting packet 57, determines hash values and extension
The hash values that port 213 allows to pass through match；ETAG is removed, ether is sent by ECP Extended Capabilities Port 213
Net broadcasting packet 56.
Port expander 22 receives broadcasting packet 57 by uplink port 222；Known based on broadcast ECID
Other exit port is ECP Extended Capabilities Port 223 and 224；Determine the ECP Extended Capabilities Port 223 of one of inbound port and exit port
Different and be not belonging to ECP Extended Capabilities Port 200, source filtering inspection passes through；Hash meters are carried out to broadcasting packet 57
Calculate, the hash values that determining hash values and ECP Extended Capabilities Port 223 allows to pass through mismatch, not by extending end
Mouth 223 is sent；Determine inbound port and different as the ECP Extended Capabilities Port 224 of another exit port and be not belonging to gather
Port 220 is closed, source filtering checks successfully；The ETAG of broadcasting packet 57 is removed, passes through ECP Extended Capabilities Port 223
Send Ethernet broadcasting packet 56.Shown in Fig. 5 C, extension bridge 26 is by aggregation port 200 only by one
The Ethernet broadcasting packet that part carrys out self terminal 28 is sent to terminal 27.
As shown in Figure 5 D, terminal 28 generates Ethernet broadcasting packet 58.Bridge 25 is controlled according to port
The number of expander 21 and 22 replicates Ethernet broadcasting packet 58, is every part of ether based on broadcast ECID
Net broadcasting packet 58 adds ETAG, and the port 231 of selection cascade port 251 sends a carrying broadcast
ECID broadcasting packet 59, the port 232 of selection cascade port 252 send a carry and broadcast ECID
Broadcasting packet 59.
Port expander 21 receives broadcasting packet 59 by uplink port 211；Known based on broadcast ECID
Other exit port is ECP Extended Capabilities Port 213, determines that inbound port is different from exit port and is not belonging to ECP Extended Capabilities Port 200,
Source filtering inspection passes through；Hash calculating is carried out to broadcasting packet 59, determines hash values and ECP Extended Capabilities Port 213
The hash values for allowing to pass through mismatch, and are not sent by ECP Extended Capabilities Port 213.
Port expander 22 receives broadcasting packet 59 by uplink port 221；Known based on broadcast ECID
Other exit port is ECP Extended Capabilities Port 223 and 224, determines the ECP Extended Capabilities Port 223 of one of inbound port and exit port
Different and be not belonging to ECP Extended Capabilities Port 200, source filtering inspection passes through；Hash meters are carried out to broadcasting packet 59
Calculate, determine that hash values match with the hash values that ECP Extended Capabilities Port 223 allows to pass through；Determine exit port and work
ECP Extended Capabilities Port 224 for another exit port is different and is not belonging to aggregation port 200, and source filtering checks successfully.
Port expander 22 removes ETAG, replicates two parts of Ethernet broadcasting packets 28, passes through ECP Extended Capabilities Port 223
A Ethernet broadcasting packet 58 is sent, a Ethernet broadcasting packet 58 is sent by ECP Extended Capabilities Port 224.
So, the Ethernet broadcasting packet 58 of self terminal 28 is carried out by extending the aggregation port 200 of bridge 26
Terminal 27 and terminal 29 are separately sent to ECP Extended Capabilities Port 224.
In the example shown in Fig. 4 A-4D and Fig. 5 A- Fig. 5 D, the ECID for distributing to ECP Extended Capabilities Port is used
Filter and check in the inbound port for indicating up unicast message and the source of non-unicast message, distribute to polymerization end
The exit port of the ECID indicating downlink unicast messages of mouth.
In Fig. 5 C-5D, port expander 21 and 22 is according to the triple or five-tuple of broadcasting packet 59
Or seven tuple or other specification a numerical value is calculated, by the numerical value being calculated according to aggregation port
The number of 200 member carries out modulus, obtains hash values.Port expander 21 and 22 is by matching hash
The ECP Extended Capabilities Port of value sends the Ethernet broadcasting packet for removing ETAG, and terminal is sent to aggregation port 200
27 Ethernet broadcasting packet carries out load balancing.
During the present invention is implemented, when port expander 21 and 22 is respectively since the multicast message that uplink port receives
ETAG carry multicast ECID, port expander 21 and 22 identifies exit port according to multicast ECID
Afterwards, the source filtering of ECP Extended Capabilities Port is checked and forward process, the load balancing of aggregation port 200 are handled and schemed
Treatment mechanism is identical when ECP Extended Capabilities Port sends broadcasting packet in 5A- Fig. 5 D.
Due in the extension bridge 26 shown in Fig. 2A -2B, controlling bridge 25 to be according to global name space
Each ECP Extended Capabilities Port and ECP Extended Capabilities Port form aggregation port distribution ECID.Bridge 25 is controlled by connecting each end
When the cascade port of mouth expander receives the up non-unicast message with ETAG, by up non-unicast report
The ECID of text attribute sets the ingress ECID for the descending non-unicast message for being sent to each port expander
Attribute.Control bridge 25 receives non-broadcasting message by double layer network port, will be sent to each port expander
The ingress ECID of descending non-unicast message be arranged to a particular value, for example 0, indicate into end
Mouth is not the ECP Extended Capabilities Port for extending bridge 26；So each port expander receives descending non-list from uplink port
When reporting literary, corresponding to the inbound port and ECID of descending non-unicast message according to knowable to ingress ECID
Exit port is different and is not belonging to same polymeric port.
Fig. 6 show apparatus for forwarding message 600 provided by the invention, can be applied to Fig. 2A -2B extension bridge
26 port expander 21.The apparatus for forwarding message 600 includes：Receiving unit 610, recognition unit 620,
Retransmission unit 630 and source filter element 640.
Receiving unit 610, the first unicast report with extension virtual local area network tags is received by uplink port
Text；Recognition unit 620, identify that the exit port information of the extension virtual local area network tags of the first unicast message carries
The mark of aggregation port；Retransmission unit 630, the extension virtual local area network tags of the first unicast message are divested, led to
Cross the ECP Extended Capabilities Port transmission for belonging to aggregation port.
Receiving unit 610, the second unicast message is received by ECP Extended Capabilities Port；
Retransmission unit 630, the second unicast message addition extension virtual local area network mark is identified as based on ECP Extended Capabilities Port
Label；The second unicast message of addition extension virtual local area network tags is sent by uplink port；Wherein, second
The ingress port information of the extension virtual local area network tags of unicast message carries the mark of ECP Extended Capabilities Port.
Receiving unit 610, the first non-unicast report with extension virtual local area network tags is received by uplink port
Text；Recognition unit 620, identify the exit port packet of the extension virtual local area network tags of the first non-unicast message
Mark containing ECP Extended Capabilities Port；Retransmission unit 630, calculate the hash values of the first non-unicast message；When hash values
Matched with ECP Extended Capabilities Port, remove the extension virtual local area network tags of the first non-unicast message, pass through ECP Extended Capabilities Port
Send the first non-unicast message.
Inspection unit 640 is filtered in source, and what the extension virtual local area network tags based on the first non-unicast message carried enters
Port information determines that the inbound port of the first non-unicast message is different from ECP Extended Capabilities Port and is not belonging to aggregation port.
Receiving unit 640, the second non-unicast message is received by ECP Extended Capabilities Port；Retransmission unit 630, based on expansion
Exhibition port is identified as the second non-unicast message addition extension virtual local area network tags；Wherein, the second unicast report
The ingress port information of the extension virtual local area network tags of text carries the mark of ECP Extended Capabilities Port；Sent out by uplink port
Send the second non-unicast message of addition extension virtual local area network tags.
Claims (10)
1. a kind of message forwarding method, it is characterised in that methods described includes：
The first unicast message with extension virtual local area network tags is received by uplink port；
Identify that the exit port information of the extension virtual local area network tags of first unicast message carries aggregation port
Mark；
The extension virtual local area network tags of first unicast message are divested, by the expansion for belonging to the aggregation port
Port is opened up to send.
2. according to the method for claim 1, it is characterised in that methods described also includes：
Second unicast message is received by the ECP Extended Capabilities Port；
The second unicast message addition extension virtual local area network tags are identified as based on the ECP Extended Capabilities Port；Its
In, the ingress port information of the extension virtual local area network tags of second unicast message carries the ECP Extended Capabilities Port
Mark；
The second unicast message of addition extension virtual local area network tags is sent by the uplink port.
3. according to the method for claim 1, it is characterised in that methods described also includes：
The first non-unicast message with extension virtual local area network tags is received by the uplink port；
Identify that the exit port packet of the extension virtual local area network tags of the described first non-unicast message contains the expansion
Open up the mark of port；
Calculate the hash values of the described first non-unicast message；
When the hash values match with the ECP Extended Capabilities Port, the extension for removing the first non-unicast message is virtual
Local Area Network tag, the first non-unicast message is sent by the ECP Extended Capabilities Port.
4. according to the method for claim 3, it is characterised in that calculate the hash of the first non-unicast message
Before value, methods described also includes：
The ingress port information that extension virtual local area network tags based on the described first non-unicast message carry determines institute
The inbound port for stating the first non-unicast message is different from the ECP Extended Capabilities Port and be not belonging to the aggregation port.
5. according to the method for claim 3, it is characterised in that
Second non-unicast message is received by the ECP Extended Capabilities Port；
Described second non-unicast message addition extension virtual local area network tags are identified as based on the ECP Extended Capabilities Port；
Wherein, the ingress port information of the extension virtual local area network tags of second unicast message carries the extension end
The mark of mouth；
The second non-unicast message of addition extension virtual local area network tags is sent by the uplink port.
6. a kind of apparatus for forwarding message, it is characterised in that described device includes：
Receiving unit, the first unicast message with extension virtual local area network tags is received by uplink port；
Recognition unit, identify that the exit port information of the extension virtual local area network tags of first unicast message carries
The mark of aggregation port；
Retransmission unit, the extension virtual local area network tags of first unicast message are divested, it is described poly- by belonging to
The ECP Extended Capabilities Port for closing port is sent.
7. device according to claim 6, it is characterised in that
The receiving unit, the second unicast message is received by the ECP Extended Capabilities Port；
The retransmission unit, the second unicast message addition extension is identified as virtually based on the ECP Extended Capabilities Port
Local Area Network tag；The second unicast message of addition extension virtual local area network tags is sent by the uplink port；
Wherein, the ingress port information of the extension virtual local area network tags of second unicast message carries the extension end
The mark of mouth.
8. device according to claim 6, it is characterised in that
The receiving unit, the first non-list with extension virtual local area network tags is received by the uplink port
Report text；
The recognition unit, identify the exit port letter of the extension virtual local area network tags of the first non-unicast message
Breath includes the mark of the ECP Extended Capabilities Port；
The retransmission unit, calculate the hash values of the first non-unicast message；When the hash values with it is described
ECP Extended Capabilities Port matches, and removes the extension virtual local area network tags of the first non-unicast message, passes through the expansion
Open up port and send the first non-unicast message.
9. device according to claim 8, it is characterised in that described device also includes：
Inspection unit is filtered in source, and what the extension virtual local area network tags based on the described first non-unicast message carried enters
Port information determines that the inbound port of the described first non-unicast message is different from the ECP Extended Capabilities Port and it is described to be not belonging to
Aggregation port.
10. device according to claim 6, it is characterised in that
The receiving unit, the second non-unicast message is received by the ECP Extended Capabilities Port；
The retransmission unit, the described second non-unicast message addition extension void is identified as based on the ECP Extended Capabilities Port
Intend Local Area Network tag；Wherein, the ingress port information of the extension virtual local area network tags of second unicast message
Carry the mark of the ECP Extended Capabilities Port；Addition extension virtual local area network tags are sent by the uplink port
Second non-unicast message.
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