CN114760245B - Stacked member equipment and method for forwarding broadcast message thereof - Google Patents
Stacked member equipment and method for forwarding broadcast message thereof Download PDFInfo
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- CN114760245B CN114760245B CN202210313832.3A CN202210313832A CN114760245B CN 114760245 B CN114760245 B CN 114760245B CN 202210313832 A CN202210313832 A CN 202210313832A CN 114760245 B CN114760245 B CN 114760245B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000002776 aggregation Effects 0.000 claims abstract description 106
- 238000004220 aggregation Methods 0.000 claims abstract description 106
- 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
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The application provides a stack member device and a method for forwarding broadcast messages. Wherein the method comprises blocking a remote aggregation member port of the aggregation ports; the aggregation port comprises a plurality of local member ports and a plurality of remote member ports; copying a copy of each output port of a broadcast table of a virtual local area network to which a 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 number of local member ports of the first Ethernet data message to be broadcast and the aggregation port; and sending the first Ethernet data message to be broadcasted, which is copied for the aggregation port, according to the local member port corresponding to the first local forwarding hash value.
Description
Technical Field
The present disclosure relates to communication technologies, and in particular, to a stack member device and a method for forwarding a broadcast message thereof.
Background
Virtualization technology is the focus of data center development attention, and is 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 plurality of logical networks isolated from each other are divided over one physical network or one physical device is divided into a plurality of virtual devices.
The IRF (Intelligent Resilient Framework, intelligent elastic framework) is formed by virtualizing a distributed device after IRF physical ports of a plurality of member devices are connected through IRF links, so that the 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 message forwarding between each member device of the IRF and the terminal to which the member device is connected, T1 and T2 are not only connected to each member device S1 and S2 respectively through a plurality of member links of an aggregation link; t1 and T2 are also connected to S1 and S2 through multiple member links of the aggregation link in a multi-homing way; thus, the redundant link with components between the stacking system and each terminal ensures the reliability of message forwarding between the stacking system and each terminal.
S1, S2 receives broadcast messages, and not only can a part of broadcast messages be sent to T1 and T2 respectively through local aggregation member ports, but also a remote aggregation member port can be selected, and then the broadcast messages are sent to member equipment S2 where the remote aggregation member port is located through a stacking link; s2 also performs the same broadcast message forwarding process, which results in that local preferential forwarding of the broadcast message cannot be ensured.
Disclosure of Invention
The invention aims to provide a stacking member device and a method for forwarding a broadcast message, which ensure that the member device of a stacking system preferentially forwards the broadcast message through a local member segment port of an aggregation port.
To achieve the above object, the present application provides a method for forwarding a broadcast message by a stack member device, where the method includes 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 a copy of each output port of a broadcast table of a virtual local area network to which a 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 number of local member ports of the first Ethernet data message to be broadcast and the aggregation port; and sending the first Ethernet data message to be broadcasted, which is copied for 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 further provides a stacking apparatus, including: 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 for each output port of a 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 number of local member ports of the first Ethernet data message to be broadcast and the aggregation port; and the sending module is used for sending the first Ethernet data message to be broadcasted, which is copied for the aggregation port, according to the local member port corresponding to the first local forwarding hash value.
The method has the beneficial effects that the stack member equipment can ensure the prior local forwarding of the Ethernet broadcast data message, the Ethernet unknown unicast data message and the unknown Ethernet multicast data message which need broadcasting.
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 message by a stack member device according to the present application;
fig. 3 is a schematic diagram of a stacking system provided in the present application to preferentially forward broadcast messages locally;
fig. 4 is a schematic diagram of a stacking system provided in the present application for remotely forwarding a broadcast message;
fig. 5 is a schematic diagram of an embodiment of a stack member device provided herein.
Detailed Description
A plurality of examples shown in the drawings will be described in detail. 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 "comprising" as used in the terminology includes, but is not limited to; the term "comprising" means including but not limited to; the terms "above," "within," and "below" encompass the present number; the terms "greater than", "less than" mean that the number is not inclusive. The term "based on" means based at least in part on a portion thereof.
In fig. 2, the flow of the method embodiment of forwarding a broadcast message by a stack member device includes:
step 201, blocking each remote aggregation member port including a plurality of local member ports and a plurality of aggregation ports of remote member segments;
step 202, copying a copy of each output port of a broadcast table of a virtual local area network to which an Ethernet data message to be broadcast belongs; wherein the aggregation port and the stacking port are output ports of the broadcast table;
step 203, calculating a local forwarding hash value based on the ethernet data message to be broadcasted and the number of local member ports of the aggregation port;
step 204, according to the local member port corresponding to the local forwarding hash value, the ethernet data message to be broadcasted, which is copied for the aggregation port, is sent.
The embodiment shown in fig. 2 has the advantage that the stack member device can ensure the preferential local forwarding for the ethernet broadcast data message, the ethernet unknown unicast data message and the ethernet unknown multicast data message which need to be broadcast.
In the stacking system shown in fig. 3, in the example of the preferential local forwarding broadcast message, T1 connects the member devices S1, S2 through 4 member links of the aggregated link and multi-homing accesses to the member devices S1 and S2. Likewise, T2 connects the member devices S1, S2 through 4 member links of the aggregated link and multi-homing access to the member device S2.
The aggregation ports of the aggregation link of the connection 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 the 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 member device S1 blocks remote aggregation member ports P5 and P6 in the aggregation ports; the member device S1 blocks the remote aggregation member ports P3, P4 in the aggregation port.
S1, setting a remote broadcast message discarding control list item; the matching items are Ethernet data messages received through the stacking port and broadcast-sent through the local member ports P1, P2, P3 and P4, and the action items are discarded; s2, setting a remote broadcast message discarding control list item; the matching item is an Ethernet data message received through the stacking port and broadcast-sent through the local member ports P5, P6, P7 and P8, and the action item is discarding.
When S1 receives an Ethernet unknown unicast data message 301 from a terminal T3, searching a broadcast table of VLAN; one ethernet unknown unicast data message 301 is replicated for the port, stack port, and two aggregation ports of the S1 connection terminal T4, respectively.
S1 sends an ethernet unknown unicast data message 301 duplicated for the stack port to S2, and sends an ethernet unknown unicast data message 301 duplicated for the port of the connection terminal T4 to the terminal T4 via the port (not shown).
S1, calculating a local forwarding hash value based on the number of the unknown unicast data message 301 of the Ethernet and the local member ports P1 and P2 connected with the aggregation port of the terminal T1, and sending the unknown unicast data message 301 of the Ethernet to the terminal T1 according to the local member port P1 corresponding to the hash value.
S1, calculating a local forwarding hash value based on the number of the unknown unicast data message 301 of the Ethernet and the local member ports P3 and P4 of the connection terminal T2, and sending the unknown unicast data message 301 of the Ethernet to the terminal T2 according to the local member port P4 corresponding to the hash value.
S2 receives an Ethernet unknown broadcast data message 301 through a stacking port, and copies an Ethernet unknown unicast data message 301 for a port of the S2 connection terminal T5 and two aggregation ports respectively. S2 sends an ethernet unknown unicast data message 301 duplicated for the port of the connection terminal T5 to the terminal T5 via the port (not shown).
S2, calculating a local forwarding hash value based on the number of the Ethernet unknown unicast data message 301 and the local member ports P5 and P6 of the aggregation port connected with the T1, determining the local member port P5 corresponding to the hash value, discarding the Ethernet unknown broadcast data message 301 copied for the aggregation port connected with the terminal T1 according to the remote broadcast message discarding control list item.
S2, calculating a local forwarding hash value based on the number of the Ethernet unknown unicast data message 301 and the local member ports P7 and P8 of the aggregation port connected with the T2, determining the local member port P8 corresponding to the hash value, discarding the Ethernet unknown broadcast data message 301 copied for the aggregation port connected with the terminal T2 according to the remote broadcast message discarding control list item.
In the example of the stacking system remote forwarding broadcast message shown in fig. 4, when the member port P1 on the S1 fails, the S2 receives a hardware interrupt of the member port failure, determines that the member port P1 fails, and the local member port P2 connected with the aggregation port of T1 still operates normally, so as to block the local member port P1 corresponding to the hardware interrupt.
When the member port P2 on the S1 also fails, the S1 receives the hardware interrupt of the member port failure, determines that the member port P2 fails, and connects the local member ports P1 and P2 of the aggregation port of the T1. S1 blocks the local member ports P1, P2 and releases the remote member ports P3 and P4. S1, the software generates a remote member port release notification message with the aggregation port identification by the agent, and sends the message to S2 through the stacking port.
S2, receiving a remote member port release notification message, deleting the local member ports P5 and P6 of the aggregation ports corresponding to the aggregation port identifiers from the matching item of the remote broadcast message discard control list item, namely, deleting the remote broadcast message discard control list item of S2; the matching item is an ethernet data message received through the stacking port and broadcast-sent through the local member ports P7 and P8, and the action item is discarding. When S1 receives an Ethernet unknown unicast data message 401 from a terminal T4, searching a broadcast table of VLAN; one ethernet unknown unicast data message 401 is replicated for the port, stack port, and two aggregation ports of the S1 connection terminal T3, respectively.
S1 sends an ethernet unknown unicast data packet 401 copied for the stack port to S2, and sends an ethernet unknown unicast data packet 401 copied for the port of the connection terminal T3 to the terminal T3 via the port (not shown).
S1, calculating a local forwarding hash value based on the number of the local member ports P3 and P4 of the unknown unicast data message 401 of the Ethernet and the aggregation port of the connection terminal T2, and sending the unknown unicast data message 401 of the Ethernet to the terminal T2 according to the local member port P3 corresponding to the hash value.
S2 receives an Ethernet unknown broadcast data message 401 through a stacking port, and copies an Ethernet unknown unicast data message 401 for a port of the S2 connection terminal T5 and two aggregation ports respectively. S2 sends an ethernet unknown unicast data message 401 duplicated for the port of the connection terminal T5 to the terminal T5 via the port.
S2, calculating a local forwarding hash value based on the number of the unknown unicast data message 401 of the Ethernet and the number of the local member ports P5 and P6 of the aggregation port connected with the T1, determining the local member port P5 corresponding to the hash value, and sending the unknown broadcast data message 401 of the Ethernet to the terminal T1 through the local member port P5.
S2, calculating a local forwarding hash value based on the number of the Ethernet unknown unicast data message 401 and the local member ports P7 and P8 of the aggregation port connected with the T2, determining the local member port P8 corresponding to the hash value, discarding the Ethernet unknown broadcast data message 401 copied for the aggregation port connected with the terminal T2 according to the remote broadcast message discarding 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 exchange chip at least comprises an aggregation port control module, a receiving module, an exchange module and a sending module. The processor is configured to execute the remote forwarding notification module by executing processor-executable instructions in the memory.
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 for each output port of a 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 number of local member ports of the first Ethernet data message to be broadcast and the aggregation port; and the sending module is used for sending the first Ethernet data message to be broadcasted, which is copied for 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 list item; the matching items are broadcast messages received through the stacking port and sent through each local member port, and the action items are 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 further used for copying a copy of 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 number of local member ports of the second ethernet data packet to be broadcast and the aggregation port; and the sending module is also used for discarding the second Ethernet data message to be broadcasted, which is copied for the aggregation port, according to the remote broadcast message discarding control list item.
The aggregation port control module is also used for receiving a first local member port fault interrupt notification of the aggregation port; determining that at least one or more of the plurality of local member ports are functioning properly; blocking the local member port fault interrupt notification to the corresponding local member port.
The receiving module is further used for receiving a fault interrupt notification of a second local member port of the aggregation port; the aggregation port control module is also used for determining all faults of the plurality of local member ports; blocking the 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 release notification message; and the sending module is used for sending a remote stacking port release 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 the second remote member port release notification message; receiving a third Ethernet data message to be broadcasted through the stacking port; the aggregation port control module is used for deleting the matching item of the remote member port from the remote broadcast message discard control list item; the switching module is used for copying one copy for each output port of a 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 number of local member ports of the third ethernet data packet to be broadcast and the aggregation port; and the sending module is used for sending a third Ethernet data message to be broadcasted, which is copied for the aggregation port, according to the local member port corresponding to the third local forwarding hash value.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method for forwarding broadcast messages by stack member devices is characterized in that,
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 a copy of each output port of a broadcast table of a virtual local area network to which a 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 broadcast and the number of local member ports of the aggregation port;
and sending the first Ethernet data message to be broadcasted, which is copied for the aggregation port, according to the local member port corresponding to the first local forwarding hash value.
2. The method according to claim 1, wherein the method further comprises:
setting a remote broadcast message discarding control list item; the matching items are data messages received through the stacking port and broadcast and sent through each local member port, and the action items are discarded;
receiving a second Ethernet data message to be broadcasted through the stacking port;
copying a copy of 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 packet to be broadcast and the number of local member ports of the aggregation port;
and discarding the second Ethernet data message to be broadcast, which is copied for the aggregation port, according to the remote broadcast message discarding control list item.
3. The method of claim 1, further comprising,
receiving a first local member port fault interrupt notification of the aggregation port;
determining that at least one or more of the plurality of local member ports are functioning properly;
blocking the local member port fault interrupt notification to the corresponding local member port.
4. The method of claim 3, further comprising,
receiving a fault interrupt notification of a second local member port of the aggregation port;
determining that all of the plurality of local member ports are faulty;
blocking the current failed local member port;
releasing the plurality of remote member ports;
generating a remote member port release notification message;
and sending the remote member port release notification message to the aggregation member equipment 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 the matching item of each local member port from the remote broadcast message discard control list item;
receiving a third Ethernet data message to be broadcasted through the stacking port;
copying a copy of 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 broadcast and the number of local member ports of the aggregation port;
and sending the third Ethernet data message to be broadcasted, which is 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 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 for each output port of a 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 broadcast and the number of local member ports of the aggregation port;
and the sending module is used for sending the first Ethernet data message to be broadcasted, which is copied for the aggregation port, according to the local member port corresponding to the first local forwarding hash value.
7. The apparatus of claim 6, wherein the device comprises a plurality of sensors,
the aggregation port control module is also used for setting a remote broadcast message discarding control list item; the matching items are messages received through a stacking port and broadcast and sent through each local member port, and the action items are discarded;
the receiving module is further configured to receive a second ethernet data packet to be broadcasted through the stacking port;
the switching module is further configured to copy a copy for 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 packet to be broadcast and the number of local member ports of the aggregation port;
the sending module is further configured to discard, according to the remote broadcast packet discard control table entry, the second ethernet data packet to be broadcast that is copied for the aggregation port.
8. The apparatus of claim 6, wherein the device comprises a plurality of sensors,
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 or more of the plurality of local member ports are functioning properly; blocking the local member port fault interrupt notification to the corresponding local member port.
9. The apparatus of claim 8, wherein the device comprises a plurality of sensors,
the receiving module is further configured to receive a failure interrupt notification of a second local member port of the aggregation port;
the aggregation port control module is further configured to determine that all of the plurality of local member ports are faulty; blocking the 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 release notification message;
and the sending module is used for sending the remote member port release notification message to the aggregation member equipment where the plurality of remote member ports are located through the stacking port.
10. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the receiving module is used for receiving a second remote member port release notification message; 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 discard control list item;
the switching module is configured to copy one copy for 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 broadcast and the number of local member ports of the aggregation port;
and the sending module is configured to send, according to the local member port corresponding to the third local forwarding hash value, the third ethernet data packet to be broadcasted, which is copied for the aggregation port.
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