CN101039172B - Ethernet ring network system and its protection method and standby host node - Google Patents

Abstract

The invention provides an ethernet ring network protection method, comprises steps as follow: in the ethernet ring network, standby host node detects the health state of the host node; when the failure of the host node is detected by the standby host node, the ethernet ring network is switched to main-using status to replace the work of the host node. The invention also provides an ethernet ring network system and the standby host node thereof. The invention solves the problem that when the host node is invalid, the MAC address and ARP address can not be refreshed and the service forwarding can not be realized.

Description

Ethernet ring network system and guard method thereof and standby host node

Technical field

The present invention relates to the communications field, more specifically, relate to a kind of Ethernet ring network system and guard method thereof and standby host node.

Background technology

RRPP (Rapid Ring Protection Protocol; rapid ring protection protocol) provides a kind of ethernet ring network; Fig. 1 shows the schematic diagram of RRPP (Rapid RingProtection Protocol, the rapid ring protection protocol) single ring architecture according to prior art.As shown in Figure 1, in the RRPP agreement, a RRPP monocycle mainly comprises two kinds of roles: host node and transmission node.

This agreement mainly relies on the major-minor port of configuration ring network host node, the major-minor port of transmission node, realize the broadcasting inhibit feature by the secondary port that blocks host node, the master port by host node sends the health status that Hello (shaking hands) message detects network to the secondary port of host node simultaneously.

The health status that Fig. 2 shows RRPP monocycle shown in Figure 1 detects schematic diagram.As shown in Figure 2, when host node receives that Link-down (link failure) message of transmission node or secondary port can not receive hello packet within a certain period of time, host node is judged the loop network link fault, the secondary port of obstruction will be opened, use COMMON-FLUSH-FDB (the public forwarding database that refreshes) message to refresh looped network MAC (Media Access Control simultaneously, Media Access Controlled) and ARP (Address Resolution Protocol, address resolution protocol) list item is to guarantee professional the forwarding.

Yet, when RRPP ring host node broke down (as restart, unusually), RRPP ring lost host node, caused RRPP ring to lose efficacy, RRPP ring can't refresh looped network MAC and ARP list item by the COMMON-FLUSH-FDB message simultaneously, causes two, three layer service flows obstructed.Need wait until MAC, professional could the recovery in the aging back of ARP list item.

Summary of the invention

The embodiment of the invention aims to provide a kind of Ethernet ring network system and guard method thereof, to solve when host node lost efficacy, can't refresh looped network MAC and ARP list item, the obstructed problem of professional forwarding.

One embodiment of the present of invention provide a kind of Ethernet ring protection method, may further comprise the steps: the standby host node in the ethernet ring network detects the health status of the host node in the ethernet ring network; Standby host node is when detecting the host node inefficacy, and then standby host node switches to the master with behind the state, sends public MAC and the ARP list item that the forwarding database message refreshes ethernet ring network that refresh.

Another embodiment of the present invention provides a kind of Ethernet ring network system, it comprises host node, also comprise: standby host node, be used to detect the health status of host node, when detecting the host node inefficacy, then switch to the master with behind the state, send public MAC and the ARP list item that the forwarding database message refreshes ethernet ring network that refresh.

Another embodiment of the present invention provides a kind of standby host node that is used for ethernet ring network, comprising: detection module is used for detecting the health status of described ethernet ring network host node; Handover module is used for switching to the master with behind the state when described detection module detects the host node inefficacy, sends public MAC and the ARP list item that the forwarding database message refreshes ethernet ring network that refresh.

The above embodiment of the present invention so solved when host node lost efficacy, can't refresh looped network MAC and ARP list item owing to when host node lost efficacy, provide standby host node to come replacement work, the obstructed problem of professional forwarding.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 shows the schematic diagram according to the RRPP single ring architecture of prior art;

The health status that Fig. 2 shows RRPP monocycle shown in Figure 1 detects schematic diagram;

Fig. 3 shows according to the RRPP monocycle state-detection of the embodiment of the invention and the concrete schematic diagram of using;

Fig. 4 shows the schematic diagram that switches to standby host node according to the RRPP monocycle of the embodiment of the invention;

Fig. 5 shows according to the RRPP monocycle state-detection of the embodiment of the invention and the concrete schematic diagram of using.

Embodiment

Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.In following illustrating, enumerated the example of RRPP single loop system, but obviously the present invention is not limited thereto.Technical scheme in following examples of the present invention there is no particular requirement for the structure of ethernet ring network, so can promote the use of in other ethernet ring network structures.

The guard method that is used for the RRPP monocycle according to the embodiment of the invention proposes; in the rapid ring protection protocol single loop system, standby host node is set; be used for when the host node of rapid ring protection protocol single loop system lost efficacy, then switching to the main state of using, replace host node to carry out work.

The above embodiments increase the standby host node role on the net based on RRPP ring, lost efficacy when being in main host node (hereinafter referred to as main) with host node or host node with state, standby host node is responsible for sending the COMMON-FLUSH-FDB message and is refreshed looped network MAC and ARP list item, to guarantee professional the forwarding normally.

According to one embodiment of present invention, concrete implementation method is as follows:

At first based on former protocols having of RRPP and prior art, registration configuration node equipment is standby host node.

Judge whether to receive that by standby host node main BACKUP (backup) message that sends with host node detects the host node health status then.Specifically, the building method of backup message is as follows:

In message, comprise target MAC (Media Access Control) address (DestinationMAC Address) field and RRPP type (RRPP TYPE) field based on the RRPP agreement.Stipulate that in the present embodiment the value of Destination MAC Address field is set to the MAC Address of RRPP Hello (shaking hands) message, RRPP TYPE field value is set to 0D, and the message that obtains thus is BACKUP (backup) message.

Fig. 3 shows according to the state-detection of the embodiment of the invention and the concrete schematic diagram of using.As shown in Figure 3, host node major-minor port sends the BACKUP message simultaneously in the RRPP domain, and destination address is a standby host node, and standby host node is by judging whether to receive the BACKUP message is determined main whether normal with host node, if can receive the BACKUP message, think that then the host node state is normal; At this moment standby host node uses as transmission node.Service traffics are normally transmitted.

Fig. 4 shows the schematic diagram that switches to standby host node according to the RRPP monocycle of the embodiment of the invention, as shown in Figure 4, when (can being provided with the timer field and stipulating this scheduled time) at the fixed time in the backup message in, standby host node do not receive the main BACKUP message that sends with host node, then thinking main lost efficacy with host node, at this moment standby host node switches to the main state of using, and send the COMMON-FLUSH-FDB message and refresh looped network MAC and ARP list item, service traffics are switched to new link and transmit simultaneously.

Wherein, use state, can not send the BACKUP message though standby host node switches to the master.

Fig. 5 shows according to the RRPP monocycle state-detection of the embodiment of the invention and the concrete schematic diagram of using, as shown in Figure 5, after the master recovered with host node, standby host node received the main BACKUP message that sends with host node, oneself state is returned switch to stand-by state.In this process, do not refresh MAC, the ARP list item of looped network, can the service switchover flow.

The realization of this method is when the master was lost efficacy with host node, refreshes the equipment in the RRPP domain, need use other agreement to safeguard for overseas equipment.For example: as Fig. 5: if Switch B breaks down, flow by Switch A process Switch B can switch to Switch C, at this moment RRPP can refresh MAC, the ARP list item of Switch B and Switch C, but can't refresh MAC, the ARP list item of Switch A, so need on the link at SwitchA, Switch B and these three equipment places of Switch C, use other agreements to safeguard (as: STP, VRRP etc.).

According to the guard method among the above embodiment, the embodiment of the invention provides a kind of ethernet ring network, and it comprises host node; also comprise: standby host node is used to detect the health status of host node, when detecting host node and lost efficacy; then switch to the main state of using, replace host node to carry out work.

Standby host node can detect the health status of host node by judging whether to receive backup message that host node sends.Optionally, standby host node at host node just often then is in stand-by state, as transmission node.

Ethernet ring network can be the RRPP single loop system.

In addition, the embodiment of the invention also provides a kind of standby host node that is used for ethernet ring network.Described standby host node comprises: detection module is used for detecting the health status of described ethernet ring network host node; And handover module, be used for when described detection module detects the host node inefficacy, switching to the master and using state, make described standby host node replace host node to carry out work.

As can be seen from the above description, the above embodiment of the present invention so solved when host node lost efficacy, can't refresh looped network MAC and ARP list item owing to when host node lost efficacy, provide standby host node to come replacement work, the obstructed problem of professional forwarding.The above embodiment of the present invention not only implementation method is simple, practical, and has significantly improved the business protection capacity when the RRPP ring net goes wrong.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. A method for protecting an Ethernet ring network, comprising the following steps: The standby master node in the Ethernet ring network detects the health status of the master node in the Ethernet ring network; When the standby master node detects that the master node fails, after the standby master node switches to the active state, it sends a public refresh forwarding database message to refresh the MAC and ARP entries of the Ethernet ring network, wherein, After the standby master node is switched to the active state, it does not send a backup message, and when receiving the backup message from the master node, it considers that the master node is back to normal, and switches to the standby state again; The standby master node detects the health status of the master node by judging whether it receives the backup message sent by the master node. 2. The Ethernet ring network protection method according to claim 1, wherein the standby master node detects the health status of the master node by judging whether it receives the backup message sent by the master node: The primary and secondary ports of the master node send the backup message to the standby master node at the same time, and if the backup master node can receive the backup message, it considers that the state of the master node is normal; if within a predetermined time If the backup message is not received, it is considered that the master node fails. 3. The method for protecting an Ethernet ring network according to claim 1, further comprising: the standby master node maintains a standby state when the state of the master node is normal. 4. The Ethernet ring network protection method according to any one of the preceding claims, wherein the Ethernet ring network is a fast ring network protection protocol single-ring system. 5. The Ethernet ring network protection method according to claim 3, wherein the backup message is set to include a destination media access control address field and a fast ring network protection protocol type field, wherein the media access control address field The value of is set to the media access control address of the fast ring network protection protocol handshake message, and the value of the fast ring network protection protocol type field is set to 0D. 6. A kind of Ethernet ring network system, it comprises master node, is characterized in that, also comprises: The standby master node is used to detect the health status of the master node. When the failure of the master node is detected, it switches to the master state and sends a public refresh forwarding database message to refresh the MAC and ARP of the Ethernet ring network. table entry, wherein the standby master node does not send a backup message after switching to the active state, and when receiving the backup message of the master node, it is considered that the master node returns to normal and switches to Standby state, the standby master node detects the health status of the master node by judging whether it has received the backup message sent by the master node. 7. The Ethernet ring network system according to claim 6, wherein the standby master node detects the health status of the master node by judging whether it receives the backup message sent by the master node. 8. The Ethernet ring network system according to claim 6, wherein the standby master node is in a standby state when the master node is normal. 9. The Ethernet ring network system according to any one of claims 6 to 8, wherein the Ethernet ring network system is a fast ring network protection protocol single-ring system. 10. A standby master node for an Ethernet ring network, characterized in that it comprises: A detection module, configured to detect the health status of the master node in the Ethernet ring network; The switch module is used to send a public refresh and forward database message to refresh the MAC and ARP entries of the Ethernet ring network after switching to the active state when the detection module detects that the master node fails, wherein, After the standby master node is switched to the active state, it does not send a backup message, and when receiving the backup message from the master node, it considers that the master node is back to normal, and switches to the standby state again; The standby master node detects the health status of the master node by judging whether it receives the backup message sent by the master node.

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