CN104780104A - Packet forwarding method and device in Smart Link networking - Google Patents
Packet forwarding method and device in Smart Link networking Download PDFInfo
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- CN104780104A CN104780104A CN201510185996.2A CN201510185996A CN104780104A CN 104780104 A CN104780104 A CN 104780104A CN 201510185996 A CN201510185996 A CN 201510185996A CN 104780104 A CN104780104 A CN 104780104A
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Abstract
The invention provides a packet forwarding method in a Smart Link networking. The networking is a ring-shaped networking, and comprises exchanging equipment of a Smart Link group and upstream exchanging equipment; the exchanging equipment of the Smart Link group sends record cleaning packets in the reverse direction through a main port to trigger an action that the upstream exchanging equipment periodically records and receives input port information of the record cleaning packets; then specific MAC table items are deleted through the combination of the input port information and the record cleaning packets when failures happen. The invention further provides a packet forwarding device in the Smart Link networking. Through the adoption of the packet forwarding method and device, the deletion of extra MAC table items and the impact of surplus broadcasts can be effectively reduced.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of message forwarding method in Smart Link networking and device.
Background technology
Smart Link group is also referred to as flexible link group, a Smart Link group comprises two member ports, one of them is designated as master port (Master Port), another is designated as secondary port (Slave Port), and different Smart Link groups can comprise same port.Under normal circumstances, only have a port (master port or secondary port) to be in forwarding (ACTIVE) state, another port gets clogged (BLOCK), is in (STANDBY) state of awaiting orders.When being in the port generation link failure (link failure mainly refers to that port status transfers DOWN, Ethernet OAM link failure etc. at present) of forwarding state, the standby port of former obstruction automatically by this port block, and can be switched to forwarding state by Smart Link group.
Fig. 1 is Smart Link networking structure schematic diagram.This Smart Link networking is annular networking.The port B of Switch2 and port C constitutes a Smart Link group, and port B is master port, and port C is secondary port.The port A of Switch 2 connects main frame.Other switching equipment are upstream switching equipment, the J port interconnection network of upstream switching equipment Switch4.In all normal situation of two up link, master port is in forwarding state, and the link at place is active link, and secondary port is standby, and place link is reserve link.Data are transmitted along active link, there is not loop in network, avoid producing broadcast storm.
When flexible link group generation link switching, original forwarding-table item is no longer applicable to new topological network, needs the renewal whole net being carried out to mac address forwarding table item.By cleaning message (Flush message), Smart Link notifies that other equipment carry out the refresh operation of mac address forwarding table item.
In order to realize quick link switching, after B port generation link down, Switch2 can send a Flush message to Switch3, continue after Switch3 process to broadcast in protection VLAN, send to Switch4 and Switch1, Switch4 and Switch1 receives rear according to the VLANBitmap information in Flush message, carry out the deletion protecting VLAN, here all MAC address entries in this VLAN are directly deleted, this will inevitably affect some other converting flows not needing to carry out in the same VLAN of MAC deletion, such as Switch4 also have other messages of VLAN2 removing H port, I port, port outside J port carries out forward and intercommunication, under direct deletion VLAN2, all MAC address entries will cause all data flow of VLAN2 in a period of time all to broadcast.
Summary of the invention
The object of the present invention is to provide a kind of message forwarding method in Smart Link networking and device, effectively reduce the deletion of extra MAC address entries and the impact of unnecessary broadcast.
Embodiments provide a kind of message forwarding method in Smart Link networking, this networking is annular networking, comprise switching equipment and the upstream switching equipment of flexible link Smart Link group, the method comprises: after Smart Link group is opened, and upstream switching equipment receives the record cleaning message sent from the master port fixed time broadcast of the switching equipment of Smart Link group; Described record cleaning message carries VLAN bitmap VLAN Bitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching; Upstream switching equipment obtains the protection VLAN ID in record cleaning message VLANBitmap field, preserves described protection VLAN ID and receiving record and clears up corresponding relation between message inbound port; When the active link fault of the switching equipment of Smart Link group, upstream switching equipment receives the cleaning message from the secondary port broadcast transmission of the switching equipment of Smart Link group; Described cleaning message carries VLAN Bitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching; Upstream switching equipment obtains the protection VLAN ID in cleaning message VLAN Bitmap field, according to described corresponding relation, deletes the MAC address entries of corresponding inbound port in described protection VLAN.
The embodiment of the present invention additionally provides a kind of apparatus for forwarding message in Smart Link networking, this networking is annular networking, comprise switching equipment and the upstream switching equipment of flexible link Smart Link group, this application of installation is in upstream switching equipment, this device comprises: receiving element, after Smart Link group is opened, receive the record cleaning message sent from the master port fixed time broadcast of the switching equipment of Smart Link group; Described record cleaning message carries VLAN bitmap VLAN Bitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching; Processing unit, obtains the protection VLAN ID in record cleaning message VLAN Bitmap field, preserves described protection VLAN ID and receiving record and clears up corresponding relation between message inbound port; Described receiving element, when the active link fault of the switching equipment of SmartLink group, receives the cleaning message of the secondary port broadcast transmission of the switching equipment from Smart Link group; Described cleaning message carries VLAN Bitmap field, is in the protection VLANID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching; Described processing unit, obtains the protection VLAN ID in cleaning message VLAN Bitmap field, according to described corresponding relation, deletes the MAC address entries of corresponding inbound port in described protection VLAN.
Beneficial effect of the present invention is, the MAC address entries that upstream switching equipment is deleted is all follow Smart Link group to carry out switching the MAC address entries needing again to move new port, extra MAC address entries is not deleted, thus controls the broadcast exposure in handoff procedure.
Accompanying drawing explanation
Fig. 1 is Smart Link networking structure schematic diagram.
Fig. 2 is the schematic flow sheet of the message forwarding method in Smart Link of the present invention networking.
Fig. 3 is embodiment of the present invention Smart Link networking structure schematic diagram.
Fig. 4 is the structural representation of the apparatus for forwarding message in Smart Link of the present invention networking.
Embodiment
Core concept of the present invention is, after Smart Link networking builds, the switching equipment of Smart Link group is by oppositely sending record cleaning (Record-Flush) message from master port, trigger the ingress port information that upstream switching equipment periodic logging receives Record-Flush message, then be incorporated into by Flush message the method that port information carries out the deletion of special MAC list item when fault occurs, do not need to avoid those flow carrying out mac refresh to carry out broadcasting the impact forwarding and bring after receiving Flush message.
Fig. 2 is the schematic flow sheet of the message forwarding method in Smart Link of the present invention networking, and the method comprises:
Step 21, after Smart Link group is opened, upstream switching equipment receives the record sent from the master port fixed time broadcast of the switching equipment of Smart Link group and clears up message; Described record cleaning message carries VLAN bitmap (VLAN Bitmap) field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching;
Step 22, upstream switching equipment obtain the protection VLAN ID in record cleaning message VLAN Bitmap field, preserve described protection VLAN ID and receiving record and clear up corresponding relation between message inbound port;
After upstream switching equipment obtains the protection VLAN ID in record cleaning message VLAN Bitmap field, the method comprises further: broadcasted in described protection VLAN by described record cleaning message.
Step 23, when the active link fault of the switching equipment of Smart Link group, upstream switching equipment receives from the cleaning message of the secondary port broadcast transmission of the switching equipment of Smart Link group; Described cleaning message carries VLAN Bitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching;
Step 24, upstream switching equipment obtain the protection VLANID in cleaning message VLAN Bitmap field, according to described corresponding relation, delete the MAC address entries of corresponding inbound port in described protection VLAN.
After upstream switching equipment obtains the protection VLAN ID in cleaning message VLAN Bitmap field, the method comprises further: broadcasted in described protection VLAN by described cleaning message.
Preferably, described record cleaning message also carries and controls VLAN ID (Control VLAN ID) field, and this Control VLAN id field is filled with the transmission control VLAN ID of Smart Link group configuration;
After upstream switching equipment receives described record cleaning message; before obtaining the protection VLAN ID in record cleaning message VLANBitmap field; the method also comprises: judge whether the transmission control VLAN of this record cleaning message controls in vlan list in the reception of the port arrangement receiving message; if, then obtain the protection VLAN ID in record cleaning message VLAN Bitmap field.
Preferably, described cleaning message also carries Control VLAN id field, and this Control VLAN id field is filled with the transmission control VLAN ID of Smart Link group configuration;
After upstream switching equipment receives described cleaning message; before obtaining the protection VLAN ID in cleaning message VLAN Bitmap field; the method also comprises: judge whether the transmission control VLAN of this cleaning message controls in vlan list in the reception of the port arrangement receiving message; if, then obtain the protection VLAN ID in cleaning message VLAN Bitmap field.
For clearly demonstrating the present invention, enumerating concrete scene below and being described.
Fig. 3 is embodiment of the present invention Smart Link networking structure schematic diagram.This Smart Link networking is annular networking.The port B of Switch 2 and port C constitutes a Smart Link group, and port B is master port, and port C is secondary port.The port A of Switch 2 connects main frame.Other switching equipment are upstream switching equipment, the J port interconnection network of upstream switching equipment Switch4.In all normal situation of two up link, master port is in forwarding state, and the link at place is active link, and secondary port is standby, and place link is reserve link.Data are transmitted along active link, there is not loop in network, avoid producing broadcast storm.
After Smart Link group is opened, Switch2 as the founder of Smart Link group, timing from master port B transmission Record-Flush message, for triggering message repeating inbound port before the switching equipment record link switching of upstream.
Be in the protection VLAN ID of the port B place Smart Link group of forwarding state before the VLAN Bitmap field filling link switching of Record-Flush message in group, in the present embodiment, protect VALN to be VALN2 and VALN3.Control VLAN id field fills the transmission control VLAN ID of Smart Link group configuration, and in the present embodiment, control VLAN is VALN2.Destination MAC is filled to unknown multicast address.SourceMAC is filled to the bridge MAC Address of the equipment sending Record-Flush message.It should be noted that, from the Record-Flush message that master port oppositely sends in the present invention, entrained field is identical with common Flush message, and other fields do not repeat them here.
Record-Flush message is broadcasted in the protection VLAN (VALN2 and VALN3) of B port place Smart Link group.
Switch1 receives Record-Flush message from port D, judges whether the transmission control VLAN of this Record-Flush message controls in vlan list in the reception of the port arrangement receiving message.If do not controlled in vlan list in reception, equipment does not process this Record-Flush message, directly forwards; If control in vlan list in reception, the VLAN Bitmap data that equipment will extract in Record-Flush message, comprise protection VLAN2 and protection VLAN3, determine that message proceeds broadcast in VLAN2 and VLAN3; Record the ingress port information of the D port of Smart Link group protection VLAN2 and protection VLAN3 simultaneously.Wherein, sending control VLAN same as the prior art, is the VLAN of Smart Link group for broadcast transmission Flush message.Receiving control VLAN same as the prior art, is upstream switching equipment for receiving and processing the VLAN of Flush message.
In like manner, Switch4 receives Record-Flush message from port H, judges whether the transmission control VLAN of this Record-Flush message controls in vlan list in the reception of the port arrangement receiving message.If do not controlled in vlan list in reception, equipment does not process this Record-Flush message, directly forwards; If control in vlan list in reception, the VLANBitmap data that equipment will extract in Record-Flush message, comprise protection VLAN2 and protection VLAN3, determine that message proceeds broadcast in VLAN2 and VLAN3; Record the ingress port information of the H port of Smart Link group protection VLAN2 and protection VLAN3 simultaneously.
In like manner, Switch3 receives Record-Flush message from port G, judges whether the transmission control VLAN of this Record-Flush message controls in vlan list in the reception of the port arrangement receiving message.If do not controlled in vlan list in reception, equipment does not process this Record-Flush message, directly forwards; If control in vlan list in reception, the VLANBitmap data that equipment will extract in Record-Flush message, comprise protection VLAN2 and protection VLAN3, determine that message proceeds broadcast in VLAN2 and VLAN3; Record the ingress port information of the G port of Smart Link group protection VLAN2 and protection VLAN3 simultaneously.
Because the C port of Switch2 is in BLOCK state, so after the Record-Flush message arrival Switch3 of broadcast, just terminate broadcast.
Wherein, Switch2 timed sending Record-Flush broadcasting packet, object keeps up-to-date port status information as far as possible, and after such as a period of time, user may change the link of F port and H port, changes to F port link to other new port.
When the active link of Switch 2 breaks down, master port B is switched to armed state, and secondary port C is switched to forwarding state.
Particularly, during link occurs fault between D port and B port, B port becomes DOWN, SmartLink group and switches fast, and C port returns to normal forwarding state from BLOCK, simultaneously C port upstream switching equipment send Flush message.
Be in the protection VLAN ID of the port B place Smart Link group of forwarding state before the VLAN Bitmap field filling link switching of Flush message in group, in the present embodiment, protect VALN to be VALN2 and VALN3.Control VLAN id field fills the transmission control VLAN ID of Smart Link group configuration, and in the present embodiment, control VLAN is VALN2.Destination MAC is filled to unknown multicast address.SourceMAC is filled to the bridge MAC Address of the equipment sending Flush message.
Flush message is broadcasted in the protection VLAN (VALN2 and VALN3) of C port place Smart Link group.
When upstream switching equipment receives Flush message, extract the VLAN Bitmap data in Flush message, and the ingress port information of Record-Flush message in conjunction with state-of-the-art record on this equipment, carry out the deletion of MAC address entries.
Particularly,
Switch3 obtains Flush message, judges whether the transmission control VLAN of this Flush message controls in vlan list in the reception of the port arrangement receiving message.If do not controlled in vlan list in reception, equipment does not process this Flush message, directly forwards; If control in vlan list in reception, the VLAN Bitmap data that equipment will extract in Flush message, comprise protection VLAN2 and protection VLAN3, determine that message proceeds broadcast in VLAN2 and VLAN3; Simultaneously corresponding according to protection VLAN2 and VLAN3 that this equipment records ingress port information port G, deletes VLAN2 and port is the MAC address entries of G; Delete VLAN3 and port is the MAC address entries of G.
Switch4 obtains Flush message, judges whether the transmission control VLAN of this Flush message controls in vlan list in the reception of the port arrangement receiving message.If do not controlled in vlan list in reception, equipment does not process this Flush message, directly forwards; If control in vlan list in reception, the VLAN Bitmap data that equipment will extract in Flush message, comprise protection VLAN2 and protection VLAN3, determine that message proceeds broadcast in VLAN2 and VLAN3; Simultaneously corresponding according to protection VLAN2 and VLAN3 that this equipment records ingress port information port H, deletes VLAN2 and port is the MAC address entries of H; Delete VLAN3 and port is the MAC address entries of H.
Switch1 obtains Flush message, judges whether the transmission control VLAN of this Flush message controls in vlan list in the reception of the port arrangement receiving message.If do not controlled in vlan list in reception, equipment does not process this Flush message, directly forwards; If control in vlan list in reception, the VLAN Bitmap data that equipment will extract in Flush message, comprise protection VLAN2 and protection VLAN3, determine that message proceeds broadcast in VLAN2 and VLAN3; Simultaneously corresponding according to protection VLAN2 and VLAN3 that this equipment records ingress port information port D, deletes VLAN2 and port is the MAC address entries of D; Delete VLAN3 and port is the MAC address entries of D.
By method of the present invention, the MAC address entries that upstream switching equipment is deleted is all follow SmartLink group to carry out switching the MAC address entries needing again to move new port, and extra MAC address entries is not deleted, thus controls the broadcast exposure in handoff procedure.
Based on same inventive concept, one embodiment of the invention also proposes a kind of apparatus for forwarding message in Smart Link networking, this networking is annular networking, comprise switching equipment and the upstream switching equipment of flexible link Smart Link group, this application of installation is in upstream switching equipment, as shown in Figure 4, this device comprises: receiving element 401 and processing unit 402
Receiving element 401, after Smart Link group is opened, receives the record cleaning message sent from the master port fixed time broadcast of the switching equipment of Smart Link group; Described record cleaning message carries VLAN bitmap VLAN Bitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching;
Processing unit 402, obtains the protection VLAN ID in record cleaning message VLAN Bitmap field, preserves described protection VLAN ID and receiving record and clears up corresponding relation between message inbound port;
Described receiving element 401, when the active link fault of the switching equipment of Smart Link group, receives the cleaning message of the secondary port broadcast transmission of the switching equipment from Smart Link group; Described cleaning message carries VLAN Bitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching;
Described processing unit 402, obtains the protection VLAN ID in cleaning message VLAN Bitmap field, according to described corresponding relation, deletes the MAC address entries of corresponding inbound port in described protection VLAN.
Described processing unit 402, after obtaining the protection VLANID in record cleaning message VLAN Bitmap field, also for being broadcasted in described protection VLAN by described record cleaning message.
Described processing unit 402, after obtaining the protection VLAN ID in cleaning message VLAN Bitmap field, also for being broadcasted in described protection VLAN by described cleaning message.
Described record cleaning message also carries Control VLAN id field, and this Control VLAN id field is filled with the transmission control VLAN ID of Smart Link group configuration;
After receiving described record cleaning message; before obtaining the protection VLAN ID in record cleaning message VLAN Bitmap field; described receiving element 401; also for judging whether the transmission control VLAN of this record cleaning message controls in vlan list in the reception of the port arrangement receiving message; if, then processing unit 402 obtains the protection VLAN ID in record cleaning message VLAN Bitmap field.
Described cleaning message also carries Control VLAN id field, and this Control VLAN id field is filled with the transmission control VLAN ID of Smart Link group configuration;
After receiving described cleaning message; before obtaining the protection VLANID in cleaning message VLAN Bitmap field; described receiving element 401; also for judging whether the transmission control VLAN of this cleaning message controls in vlan list in the reception of the port arrangement receiving message; if, then processing unit 402 obtains the protection VLAN ID in cleaning message VLAN Bitmap field.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. the message forwarding method in Smart Link networking, this networking is annular networking, and comprise switching equipment and the upstream switching equipment of flexible link Smart Link group, the method comprises:
After Smart Link group is opened, upstream switching equipment receives the record cleaning message sent from the master port fixed time broadcast of the switching equipment of Smart Link group; Described record cleaning message carries VLAN bitmap VLAN Bitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching;
Upstream switching equipment obtains the protection VLAN ID in record cleaning message VLAN Bitmap field, preserves described protection VLAN ID and receiving record and clears up corresponding relation between message inbound port;
When the active link fault of the switching equipment of Smart Link group, upstream switching equipment receives the cleaning message from the secondary port broadcast transmission of the switching equipment of SmartLink group; Described cleaning message carries VLANBitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching;
Upstream switching equipment obtains the protection VLAN ID in cleaning message VLAN Bitmap field, according to described corresponding relation, deletes the MAC address entries of corresponding inbound port in described protection VLAN.
2. the method for claim 1, is characterized in that, after upstream switching equipment obtains the protection VLAN ID in record cleaning message VLAN Bitmap field, the method comprises further:
Described record cleaning message is broadcasted in described protection VLAN.
3. the method for claim 1, is characterized in that, after upstream switching equipment obtains the protection VLAN ID in cleaning message VLAN Bitmap field, the method comprises further:
Described cleaning message is broadcasted in described protection VLAN.
4. the method for claim 1, is characterized in that, described record cleaning message also carries and controls VLAN ID Control VLAN id field, and this Control VLAN id field is filled with the transmission control VLAN ID of SmartLink group configuration;
After upstream switching equipment receives described record cleaning message, before obtaining the protection VLAN ID in record cleaning message VLANBitmap field, the method also comprises:
Judge whether the transmission control VLAN of this record cleaning message controls in vlan list in the reception of the port arrangement receiving message, if, then obtain the protection VLAN ID in record cleaning message VLAN Bitmap field.
5. the method for claim 1, is characterized in that, described cleaning message also carries ControlVLAN id field, and this Control VLAN id field is filled with the transmission control VLAN ID of Smart Link group configuration;
After upstream switching equipment receives described cleaning message, before obtaining the protection VLAN ID in cleaning message VLAN Bitmap field, the method also comprises:
Judge whether the transmission control VLAN of this cleaning message controls in vlan list in the reception of the port arrangement receiving message, if, then obtain the protection VLAN ID in cleaning message VLAN Bitmap field.
6. the apparatus for forwarding message in Smart Link networking, this networking is annular networking, and comprise switching equipment and the upstream switching equipment of flexible link Smart Link group, this application of installation is in upstream switching equipment, and this device comprises:
Receiving element, after Smart Link group is opened, receives the record cleaning message sent from the master port fixed time broadcast of the switching equipment of Smart Link group; Described record cleaning message carries VLAN bitmap VLAN Bitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching;
Processing unit, obtains the protection VLAN ID in record cleaning message VLAN Bitmap field, preserves described protection VLAN ID and receiving record and clears up corresponding relation between message inbound port;
Described receiving element, when the active link fault of the switching equipment of Smart Link group, receives the cleaning message of the secondary port broadcast transmission of the switching equipment from SmartLink group; Described cleaning message carries VLANBitmap field, is in the protection VLAN ID of the master port place Smart Link group of forwarding state before this VLAN Bitmap field is filled with link switching;
Described processing unit, obtains the protection VLAN ID in cleaning message VLAN Bitmap field, according to described corresponding relation, deletes the MAC address entries of corresponding inbound port in described protection VLAN.
7. device as claimed in claim 6, is characterized in that, described processing unit, after obtaining the protection VLAN ID in record cleaning message VLAN Bitmap field, also for
Described record cleaning message is broadcasted in described protection VLAN.
8. device as claimed in claim 6, is characterized in that, described processing unit, after obtaining the protection VLAN ID in cleaning message VLAN Bitmap field, also for
Described cleaning message is broadcasted in described protection VLAN.
9. device as claimed in claim 6, is characterized in that, described record cleaning message also carries and controls VLAN ID Control VLAN id field, and this Control VLAN id field is filled with the transmission control VLAN ID of SmartLink group configuration;
After receiving described record cleaning message, before obtaining the protection VLAN ID in record cleaning message VLAN Bitmap field,
Described receiving element; also for judging whether the transmission control VLAN of this record cleaning message controls in vlan list in the reception of the port arrangement receiving message; if, then processing unit obtains the protection VLAN ID in record cleaning message VLAN Bitmap field.
10. device as claimed in claim 6, it is characterized in that, described cleaning message also carries ControlVLAN id field, and this Control VLAN id field is filled with the transmission control VLAN ID of Smart Link group configuration;
After receiving described cleaning message, before obtaining the protection VLANID in cleaning message VLAN Bitmap field,
Described receiving element, also for judging whether the transmission control VLAN of this cleaning message controls in vlan list in the reception of the port arrangement receiving message, if, then processing unit obtains the protection VLAN ID in cleaning message VLANBitmap field.
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| H3C: "Smart Link & Monitor Link技术白皮书", 《百度文库，来源于HTTPS://WENKU.BAIDU.COM/VIEW/C2521469450E52EA5518988F.HTML?FROM=SERACH》 * |
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| CN105591919A (en) * | 2015-08-31 | 2016-05-18 | 杭州华三通信技术有限公司 | FLUSH message processing method and equipment |
| CN105591919B (en) * | 2015-08-31 | 2018-11-27 | 新华三技术有限公司 | A kind of processing method and equipment of FLUSH message |
| CN105634939A (en) * | 2016-04-11 | 2016-06-01 | 上海斐讯数据通信技术有限公司 | Ethernet device for telecommunication network and protection switching method |
| CN106878051A (en) * | 2016-12-16 | 2017-06-20 | 新华三技术有限公司 | A kind of multi-computer back-up implementation method and device |
| CN108881011A (en) * | 2017-05-08 | 2018-11-23 | 中兴通讯股份有限公司 | LACP switching method and apparatus applied to striding equipment |
| CN109474531A (en) * | 2018-12-24 | 2019-03-15 | 安徽皖兴通信息技术有限公司 | A kind of method that packet access network exchange table entries delete synchronization |
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| CN104780104B (en) | 2018-05-11 |
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