CN114760245A - Stacking member equipment and method for forwarding broadcast message by stacking member equipment - Google Patents
Stacking member equipment and method for forwarding broadcast message by stacking member equipment Download PDFInfo
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- CN114760245A CN114760245A CN202210313832.3A CN202210313832A CN114760245A CN 114760245 A CN114760245 A CN 114760245A CN 202210313832 A CN202210313832 A CN 202210313832A CN 114760245 A CN114760245 A CN 114760245A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000002776 aggregation Effects 0.000 claims abstract description 102
- 238000004220 aggregation Methods 0.000 claims abstract description 102
- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/58—Association of routers
- H04L45/583—Stackable routers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/32—Flow control; Congestion control by discarding or delaying data units, e.g. packets or frames
Abstract
The application provides a stacking member device and a method for forwarding a broadcast message by the stacking member device. The method comprises the steps of blocking a remote aggregation member port in an aggregation port; the aggregation port comprises a plurality of local member ports and a plurality of remote member ports; copying one copy for each output port of the broadcast table of the virtual local area network to which the first Ethernet data message to be broadcast belongs; wherein the aggregation port and the stacking port are output ports of the broadcast meter; calculating a first local forwarding hash value based on the first Ethernet data message to be broadcasted and the number of local member ports of the aggregation port; and sending the first Ethernet data message to be broadcasted copied as the aggregation port according to the local member port corresponding to the first local forwarding hash value.
Description
Technical Field
The present application relates to communications technologies, and in particular, to a stack member device and a method for forwarding a broadcast packet thereof.
Background
Virtualization technologies are the focus of data center development attention, and are divided into two categories: one is N:1 virtualization in which a plurality of physical devices are integrated into one logical device, and the other is 1: N virtualization in which a physical network is divided into a plurality of logical networks isolated from each other or one physical device is divided into a plurality of virtual devices.
After being connected by an IRF link, an IRF (Intelligent Resilient Framework) of a plurality of member devices is virtualized into a "distributed device", so that cooperative work, unified management and uninterrupted maintenance of the plurality of devices are realized.
As shown in fig. 1, in order to improve the reliability of forwarding messages between each member device of the IRF and the terminal accessed to the member device, T1 and T2 not only respectively connect to each member device S1 and S2 through multiple member links of the aggregation link; t1, T2 also have multihomed access to S1 and S2 over multiple member links of the aggregated link; therefore, the stacking system and each terminal have component redundant links, and the reliability of message forwarding between the stacking system and each terminal is ensured.
S1 and S2 receive the broadcast message, not only send a broadcast message to T1 and T2 respectively through the local aggregation member port, but also select the remote aggregation member port, and then send the broadcast message to the member device S2 where the remote aggregation member port is located through the stacking link; s2 also performs the same broadcast packet forwarding process, which results in failure to ensure local priority forwarding of broadcast packets.
Disclosure of Invention
The present application aims to provide a stacking member device and a method for forwarding a broadcast packet thereof, which ensure that the member device of a stacking system preferentially forwards the broadcast packet through a local member segment port of an aggregation port.
In order to achieve the above object, the present application provides a method for forwarding a broadcast packet by a stack member device, the method including blocking a remote aggregation member port in an aggregation port; the aggregation port comprises a plurality of local member ports and a plurality of remote member ports; copying one copy for each output port of the broadcast table of the virtual local area network to which the first Ethernet data message to be broadcast belongs; wherein the aggregation port and the stacking port are output ports of the broadcast table; calculating a first local forwarding hash value based on the first Ethernet data message to be broadcasted and the number of local member ports of the aggregation port; and sending the first Ethernet data message to be broadcasted copied as the aggregation port according to the local member port corresponding to the first local forwarding hash value.
In order to implement the above method, the present application also provides a stacking apparatus, including: the aggregation port control module is used for blocking a remote aggregation member port in the aggregation port; the aggregation port comprises a plurality of local member ports and a plurality of remote member ports; the receiving module is used for receiving a first Ethernet data message to be broadcasted; the switching module is used for copying one copy of each output port of the broadcast table of the virtual local area network to which the first Ethernet data message to be broadcasted belongs; wherein the aggregation port and the stacking port are output ports of the broadcast table; calculating a first local forwarding hash value based on the first Ethernet data message to be broadcasted and the number of local member ports of the aggregation port; and the sending module is used for sending the first to-be-broadcast Ethernet data message copied as the aggregation port according to the local member port corresponding to the first local forwarding hash value.
The method and the device have the advantages that the stacking member device can ensure preferential local forwarding of the Ethernet broadcast data message, the Ethernet unknown unicast data message and the unknown Ethernet multicast data message which need to be broadcasted.
Drawings
FIG. 1 is a schematic diagram of a member device of a stacked system accessing a terminal through an aggregated link;
fig. 2 is a flowchart of an embodiment of a method for forwarding a broadcast packet by a stack member device according to the present application;
fig. 3 is a schematic diagram illustrating that a stacking system provided in the present application preferentially forwards a broadcast packet locally;
fig. 4 is a schematic diagram of a stacking system for remotely forwarding broadcast messages according to the present application;
fig. 5 is a schematic diagram of an embodiment of a stack member device provided in the present application.
Detailed Description
A detailed description will be given of a number of examples shown in a number of figures. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the examples.
The term "including" as that term is used is meant to include, but is not limited to; the term "comprising" means including but not limited to; the terms "above," "within," and "below" include the instant numbers; the terms "greater than" and "less than" mean that the number is not included. The term "based on" means based on at least a portion thereof.
Fig. 2 shows a flow of an embodiment of a method for forwarding a broadcast packet by a stack member device according to the present application, where the flow includes:
and step 204, sending the Ethernet data message to be broadcasted copied as the aggregation port according to the local member port corresponding to the local forwarding hash value.
The embodiment shown in fig. 2 has the advantage that the stacking member device can ensure preferential local forwarding for ethernet broadcast data packets, ethernet unknown unicast data packets, and ethernet unknown multicast data packets that need to be broadcast.
In the example of the stack system preferentially forwarding the broadcast messages locally shown in fig. 3, T1 connects the member devices S1, S2 through 4 member links of the aggregation link and has multi-homing access to the member devices S1 and S2. Likewise, T2 connects member devices S1, S2 and multi-homed accesses to member device S2 through 4 member links of the aggregated link.
The aggregation ports of the aggregation link connecting terminal T1 on S1 include local member ports P1, P2 and remote member ports P5, P6; the aggregation ports of the aggregation link on S2 to which terminal T2 is connected include local member ports P7, P8 and remote member ports P3, P4.
Terminals T1-T5 are in the same VLAN (Virtual Local Area Network), and the member device S1 blocks remote aggregation member ports P5 and P6 in the aggregation port; the member device S1 blocks remote aggregate member ports P3, P4 of the aggregate port.
S1, setting remote broadcast message discarding control list item; the matching item is an Ethernet data message which is received through the stack port and broadcast and sent through the local member ports P1, P2, P3 and P4, and the action item is discarding; s2, setting remote broadcast message discarding control list item; the matching item is an Ethernet data message received through the stack port and broadcast and sent through the local member ports P5, P6, P7 and P8, and the action item is discarding.
When S1 receives the unknown Ethernet unicast data message 301 from the terminal T3, a broadcast table of the VLAN is searched; and respectively copying an unknown Ethernet unicast data message 301 for the port of the S1 connecting the terminal T4, the stacking port and the two aggregation ports.
S1 sends the ethernet unknown unicast data packet 301 copied for the stack port to S2, and sends the ethernet unknown unicast data packet 301 copied for the port connected to terminal T4 to terminal T4 via the port (not shown).
S1 calculates a local forwarding hash value based on the unknown unicast data packet 301 over ethernet and the number of the local member ports P1 and P2 connected to the aggregate port of the terminal T1, and sends the unknown unicast data packet 301 over ethernet to the terminal T1 according to the local member port P1 corresponding to the hash value.
S1, based on the number of the unknown unicast data packet 301 and the local member ports P3 and P4 connected to the terminal T2, calculates the local forwarding hash value, and sends the unknown unicast data packet 301 to the terminal T2 according to the local member port P4 corresponding to the hash value.
S2 receives the ethernet unknown broadcast data packet 301 through the stack port, and copies one ethernet unknown unicast data packet 301 for the port of the S2 connection terminal T5 and the two aggregation ports, respectively. S2 forwards the ethernet-unaware unicast data packet 301 replicated for the port connected to terminal T5 to terminal T5 via this port (not shown).
S2 calculates a local forwarding hash value based on the unknown unicast data packet 301 of ethernet and the number of the local member ports P5 and P6 connected to the aggregation port of T1, determines the local member port P5 corresponding to the hash value, and discards the unknown broadcast data packet 301 of ethernet copied to the aggregation port of the connection terminal T1 according to the remote broadcast packet discard control table entry.
S2 calculates a local forwarding hash value based on the unknown unicast data packet 301 of ethernet and the number of the local member ports P7 and P8 connected to the aggregation port of T2, determines the local member port P8 corresponding to the hash value, and discards the unknown broadcast data packet 301 of ethernet copied to the aggregation port of the connection terminal T2 according to the remote broadcast packet discard control table entry.
In the example of the remote forwarding of broadcast messages in the stacking system shown in fig. 4, when the member port P1 on S1 fails, S2 receives a hardware interrupt of the member port failure, determines that the member port P1 fails, and the local member port P2 connected to the aggregation port of T1 still operates normally, and blocks the local member port P1 corresponding to the hardware interrupt.
When the member port P2 on S1 also fails, S1 receives a hardware interrupt of the member port failure, determines that the member port P2 fails, and the aggregation port local member ports P1 and P2 connected to T1 all fail. S1 blocks local member ports P1, P2 and lets go of remote member ports P3 and P4. The S1 software generates the remote member port release notice message with the aggregation port identification, and sends the message to S2 through the stack port.
S2 receives the remote member port release notice message, deletes the local member port P5, P6 of the aggregation port corresponding to the aggregation port identification from the matching item of the remote broadcast message discard control table item, namely the remote broadcast message discard control table item of S2; the matching item is the Ethernet data message received by the stacking port and broadcast and sent by the local member ports P7 and P8, and the action item is discarding. When S1 receives the unknown Ethernet unicast data message 401 from the terminal T4, a broadcast table of the VLAN is searched; and respectively copying one Ethernet unknown unicast data message 401 for the port, the stacking port and the two aggregation ports of the S1 connection terminal T3.
S1 sends the ethernet unknown unicast data packet 401 copied for the stack port to S2, and sends the ethernet unknown unicast data packet 401 copied for the port connecting terminal T3 to terminal T3 via the port (not shown).
S1 calculates a local forwarding hash value based on the number of the ethernet unknown unicast data packet 401 and the local member ports P3 and P4 of the aggregation port connected to the terminal T2, and sends the ethernet unknown unicast data packet 401 to the terminal T2 according to the local member port P3 corresponding to the hash value.
S2 receives the unknown Ethernet broadcast data message 401 through the stack port, and copies one unknown Ethernet unicast data message 401 for the port of the S2 connection terminal T5 and the two aggregation ports respectively. S2 forwards the ethernet unaware unicast data packet 401, which is replicated for the port connecting terminal T5, to terminal T5 via this port.
S2, based on the unknown unicast data packet 401 of Ethernet and the number of the local member ports P5 and P6 of the aggregation port connected to T1, calculates the local forwarding hash value, determines the local member port P5 corresponding to the hash value, and sends the unknown broadcast data packet 401 of Ethernet to the terminal T1 through the local member port P5.
S2 calculates a local forwarding hash value based on the number of the ethernet unknown unicast data packet 401 and the local member ports P7 and P8 connected to the aggregation port of T2, determines the local member port P8 corresponding to the hash value, and discards the ethernet unknown broadcast data packet 401 copied to the aggregation port of the connection terminal T2 according to the remote broadcast packet discard control item.
Fig. 5 is a schematic diagram of an embodiment of a stack member device provided in the present application, where the device 40 at least includes: network interface, exchange chip, CPU and memory. The switching chip at least comprises an aggregation port control module, a receiving module, a switching module and a sending module. The processor executes the processor-executable instructions in the memory to execute the remote forwarding notification module.
The aggregation port control module is used for blocking a remote aggregation member port in the aggregation ports; the aggregation port comprises a plurality of local member ports and a plurality of remote member ports; the receiving module is used for receiving a first Ethernet data message to be broadcasted; the switching module is used for copying one copy of each output port of the broadcast table of the virtual local area network to which the first Ethernet data message to be broadcasted belongs; wherein the aggregation port and the stacking port are output ports of the broadcast table; calculating a first local forwarding hash value based on the first Ethernet data message to be broadcasted and the number of local member ports of the aggregation port; and the sending module is used for sending the first to-be-broadcast Ethernet data message copied as the aggregation port according to the local member port corresponding to the first local forwarding hash value.
The aggregation port control module is also used for setting a remote broadcast message discarding control table entry; the matching item is a broadcast message received through the stacking port and sent through each local member port, and the action item is discarded;
the receiving module is also used for receiving a second Ethernet data message to be broadcasted through the stacking port; the switching module is also used for copying one copy for each output port of the broadcast table of the virtual local area network to which the second Ethernet data message to be broadcast belongs; calculating a second local forwarding hash value based on the second Ethernet data message to be broadcasted and the number of the local member ports of the aggregation port; and the sending module is also used for discarding the second Ethernet data message to be broadcasted copied for the aggregation port according to the remote broadcast message discarding control table entry.
The aggregation port control module is also used for receiving a fault interrupt notification of a first local member port of the aggregation port; determining that at least one of the plurality of local member ports is functioning properly; and blocking the local member port fault interrupt to inform the corresponding local member port.
The receiving module is further used for receiving a second local member port fault interrupt notification of the aggregation port; the aggregation port control module is also used for determining that all the plurality of local member ports have faults; blocking a current failed local member port; opening a plurality of remote member ports; the remote forwarding notification module is used for generating a remote member port releasing notification message; and the sending module is used for sending the remote stacking port opening message notification message to the aggregation member equipment where the plurality of remote member ports are located through the stacking port.
The receiving module is used for receiving a releasing notification message of the second remote member port; receiving a third Ethernet data message to be broadcasted through the stacking port; the aggregation port control module is used for deleting the matching items of the remote member port from the remote broadcast message discarding control list items; the switching module is used for copying one copy for each output port of the broadcast table of the virtual local area network to which the third Ethernet data message to be broadcast belongs; calculating a third local forwarding hash value based on the third Ethernet data message to be broadcasted and the number of the local member ports of the aggregation port; and the sending module is used for sending the third Ethernet data message to be broadcasted copied as the aggregation port according to the local member port corresponding to the third local forwarding hash value.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (10)
1. A method for a stack member device to forward broadcast messages,
blocking a remote aggregation member port in the aggregation ports; the aggregation port comprises a plurality of local member ports and a plurality of remote member ports;
Copying one copy for each output port of the broadcast table of the virtual local area network to which the first Ethernet data message to be broadcast belongs; wherein the aggregation port and stacking port are egress ports of the broadcast table;
calculating a first local forwarding hash value based on the first Ethernet data message to be broadcasted and the number of local member ports of the aggregation port;
and sending the first Ethernet data message to be broadcasted copied for the aggregation port according to the local member port corresponding to the first local forwarding hash value.
2. The method of claim 1, further comprising:
setting a remote broadcast message discarding control table entry; the matching item is a data message which is received through a stacking port and is broadcast and sent through each local member port, and the action item is discarded;
receiving a second Ethernet data message to be broadcasted through the stacking port;
copying one copy for each output port of the broadcast table of the virtual local area network to which the second ethernet data message to be broadcast belongs;
calculating a second local forwarding hash value based on the second Ethernet data message to be broadcast and the number of local member ports of the aggregation port;
And discarding the second Ethernet data message to be broadcasted copied for the aggregation port according to the remote broadcast message discarding control table entry.
3. The method of claim 1, further comprising,
receiving a first local member port failure interrupt notification for the aggregation port;
determining that at least one of the plurality of local member ports is functioning properly;
and blocking the local member port fault interrupt to inform the corresponding local member port.
4. The method of claim 3, further comprising,
receiving a second local member port failure interrupt notification for the aggregated port;
determining that all of the plurality of local member ports have failed;
blocking a current failed local member port;
releasing the plurality of remote member ports;
generating a remote member port release notification message;
and sending the remote stacking port release message notification message to the aggregation member device where the plurality of remote member ports are located through the stacking port.
5. The method of claim 2, further comprising,
receiving a second remote member port release notification message;
Deleting each local member port from the matching item of the remote broadcast message discarding control table item;
receiving a third Ethernet data message to be broadcasted through the stacking port;
copying one copy for each output port of the broadcast table of the virtual local area network to which the third ethernet data message to be broadcast belongs;
calculating a third local forwarding hash value based on the third Ethernet data packet to be broadcasted and the number of local member ports of the aggregation port;
and sending the third Ethernet data message to be broadcasted copied for the aggregation port according to the local member port corresponding to the third local forwarding hash value.
6. A stack member device, the device comprising:
the aggregation port control module is used for blocking a remote aggregation member port in the aggregation port; the aggregation port comprises a plurality of local member ports and a plurality of remote member ports;
the receiving module is used for receiving a first Ethernet data message to be broadcasted;
the switching module is used for copying one copy of each output port of the broadcast table of the virtual local area network to which the first Ethernet data message to be broadcasted belongs; wherein the aggregation port and stacking port are egress ports of the broadcast table; calculating a first local forwarding hash value based on the first Ethernet data message to be broadcasted and the number of local member ports of the aggregation port;
And the sending module is used for sending the first to-be-broadcast Ethernet data message copied to the aggregation port according to the local member port corresponding to the first local forwarding hash value.
7. The apparatus of claim 6,
the aggregation port control module is also used for setting a remote broadcast message discarding control table entry; the matching item is a message which is received through a stacking port and is broadcast and sent through each local member port, and the action item is discarded;
the receiving module is further configured to receive a second ethernet data packet to be broadcast through the stack port;
the switching module is further configured to copy one copy of each output port of the broadcast table of the virtual local area network to which the second ethernet data packet to be broadcast belongs; calculating a second local forwarding hash value based on the second Ethernet data message to be broadcast and the number of local member ports of the aggregation port;
the sending module is further configured to discard the second ethernet data packet to be broadcast copied for the aggregation port according to the remote broadcast packet discard control table entry.
8. The apparatus of claim 6,
The aggregation port control module is further configured to receive a failure interrupt notification of a first local member port of the aggregation port; determining that at least one of the plurality of local member ports is functioning properly; and blocking the local member port fault interrupt to inform the corresponding local member port.
9. The apparatus of claim 8,
the receiving module is further configured to receive a second local member port failure interrupt notification of the aggregation port;
the aggregation port control module is further configured to determine that all of the plurality of local member ports have failed; blocking a current failed local member port; releasing the plurality of remote member ports;
the remote forwarding notification module is used for generating a remote member port releasing notification message;
the sending module is configured to send the remote stacking port release message notification message to the aggregation member device where the plurality of remote member ports are located through the stacking port.
10. The apparatus of claim 7,
the receiving module is used for receiving a releasing notification message of a second remote member port; receiving a third Ethernet data message to be broadcasted through the stacking port;
The aggregation port control module is used for deleting the remote broadcast message discarding control table entry;
the switching module is configured to copy one copy of each output port of the broadcast table of the virtual local area network to which the third ethernet data packet to be broadcast belongs; calculating a third local forwarding hash value based on the third Ethernet data packet to be broadcasted and the number of local member ports of the aggregation port;
the sending module is configured to send the third ethernet data packet to be broadcast copied to the aggregation port according to the local member port corresponding to the third local forwarding hash value.
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