CN102238067A - Switching method and device on Rapid Ring Protection Protocol (RRPP) ring - Google Patents
Switching method and device on Rapid Ring Protection Protocol (RRPP) ring Download PDFInfo
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- CN102238067A CN102238067A CN2010101613546A CN201010161354A CN102238067A CN 102238067 A CN102238067 A CN 102238067A CN 2010101613546 A CN2010101613546 A CN 2010101613546A CN 201010161354 A CN201010161354 A CN 201010161354A CN 102238067 A CN102238067 A CN 102238067A
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Abstract
The invention provides a switching method and device on a Rapid Ring Protection Protocol (RRPP) ring. The method comprises steps the following steps: when the transmission node newly joins in the RRPP ring, informing the primary node on the RRPP that the transmission node is in a Route-Down state, so that the primary node does not block the forwarding function of the secondary port on data messages; and when the transmission node detects that the route from the Multiple Protocol Label Switching (MPLS) network to the transmission node is accessible, informing the primary node that the transmission node is in a Route-Up state, so that the primary node blocks the forwarding function of the secondary port on data messages. The invention can shorten the service interruption time after the failure of the transmission node on the RRPP ring is recovered, and enhance the reliability of the RRPP ring.
Description
Technical field
The present invention relates to network communications technology field, the switching method and apparatus on particularly a kind of rapid ring protection protocol (RRPP) ring.
Background technology
Raising becomes the problem that the user is concerned about most gradually such as key network reliability of nodes such as data centers, and most common form is to adopt Redundancy Design.Be the redundant node that symmetry is set such as network nodes such as data centers, perhaps redundant link is set for network link, so that when a network node or a network link break down, can flow be switched on redundant node or the redundant link fast, reduce time of service interruption, improve system reliability.
Data center's the most frequently used reliability network design is the network composition proposal of Multiple Spanning Tree Protocol (MSTP) in conjunction with rapid ring protection protocol (RRPP), but along with the development of business, the network of data center is formed and some new trend occurred.The most outstanding is in some large-scale gardens, a plurality of data centers are arranged in the building of a plurality of dispersions, the client generally can link together a plurality of building by a RRPP ring net, is connected by multiprotocol label switching (mpls) with outside wide area network simultaneously, as shown in Figure 1.Wherein, RRPP is a link layer protocol that is applied to Ethernet ring, can prevent the broadcast storm that data loopback causes when Ethernet ring is complete, can recover the communication path between each network node on the looped network rapidly when a link disconnects on the Ethernet ring.
The MPLS network is modal to be VPLS, and as shown in Figure 2, switch A, B, C and D are as the PE equipment of VPLS, and the master port of the master on the RRPP ring (master) node is opened secondary port block.On RRPP ring, the Primary port and secondary port of host node is difference to some extent on function, and in this simple declaration once: the master port of host node is used for sending the loop probe messages, and secondary port is used for receiving the loop probe messages; When RRPP ring was in health status, the secondary port of host node is blocking data VLAN logically, only allowed the message of control VLAN to pass through; When RRPP ring was in off-state, the secondary port of host node was transmitted the message of data vlan with unblocking.When RRPP ring shown in Figure 2 is in health status, in order to prevent that double situation from appearring in data center's 2 to LAN1 direction broadcast packets, link between switch C and the switch D does not dispose the VLAN of VPLS business, normal Business Stream is transmitted by switch A-B-C-F, shown in dotted arrow among Fig. 2.
If switch C breaks down, host node can't receive by secondary port from the control message that master port sends, thereby determine the RRPP ring fault, then host node is the message that switch D open auxiliary port is transmitted data vlan, form the forward-path of switch A-D-E-F, shown in dotted arrow among Fig. 3.The service outage duration of this handoff procedure is very little, usually about 50ms.
If it is normal that switch C recovers, host node on the RRPP ring is the secondary port of switch D rapid occlusion, but because switch C just recovers, also need a route recovery process, and the switch in the MPLS network, promptly switch A and B also do not learn to arrive by switch C the route of data center 2, therefore, will cause the message of up data vlan to be dropped at switch C place, the message of descending data vlan is dropped on switch D, as shown in Figure 4.Because route learning is long process, therefore, after recovering normally, will bring switch C the service disconnection of long period, and can reach about 50s break period.
Summary of the invention
In view of this, the invention provides the switching method and apparatus on a kind of RRPP ring, so that reduce the service outage duration that the transmission node on the RRPP ring brings after fault recovery.
Changing method on a kind of RRPP ring is applied to the scene of MPLS network in conjunction with RRPP ring, and this method comprises:
When transmission node newly added RRPP ring, the host node on described RRPP ring notified described transmission node to be in routing failure Route-Down state, so that host node does not block secondary port to data message forwarding function;
Described transmission node detects the MPLS network when the route of described transmission node can reach, and the host node on described RRPP ring notifies described transmission node to be in route recovery Route-Up state, so that host node blocks secondary port to data message forwarding function.
Changing method on a kind of RRPP ring is applied to the scene of MPLS network in conjunction with RRPP ring, and this method comprises:
After the transmission node that host node on the RRPP ring receives new adding RRPP ring is in the notice of Route-Down state, do not block secondary port to data message forwarding function;
It is normal and get access to after described transmission node is in the notice of Route-UP state that described host node detects RRPP ring, blocks secondary port to data message forwarding function; Wherein, to be in the notice of Route-Up state be that described transmission node detects the MPLS network and sends when the route of described transmission node can reach to described transmission node.
Transmission node on a kind of RRPP ring is applied to the scene of MPLS network in conjunction with RRPP ring, and this transmission node comprises: start processing unit, notice transmitting element and route exploration unit;
Described startup processing unit is used for determining that described transmission node newly adds RRPP ring;
Described notice transmitting element, be used for when described startup processing unit determines that described transmission node newly adds RRPP ring, host node on described RRPP ring notifies described transmission node to be in the Route-Down state, so that described host node does not block secondary port to data message forwarding function; The route of described transmission node detects the MPLS network in described route exploration unit when can reach, host node on described RRPP ring notifies described transmission node to be in the Route-Up state, so that described host node blocks secondary port to data message forwarding function;
Whether described route exploration unit is used to survey the MPLS network and can reaches to the route of described transmission node.
Host node on a kind of RRPP ring is applied to the scene of MPLS network in conjunction with RRPP ring, and this host node comprises: looped network detecting unit, notice acquiring unit and port switch unit;
The looped network detecting unit, whether be used to detect the RRPP ring net normal;
The notice acquiring unit after the transmission node that is used to receive new adding RRPP ring is in the notice of Route-Down state, forbids that described port switch unit blocks secondary port to data message forwarding function; Get access to after described transmission node is in the notice of Route-UP state, trigger described port switch unit and block secondary port data message forwarding function;
Described port switch unit, be used for described looped network detecting unit detect the RRPP ring net normal and be subjected to the triggering of described notice acquiring unit after, block secondary port to data message forwarding function.
As can be seen from the above technical solutions, in the method and apparatus provided by the invention, transmission node is when newly adding RRPP ring, and the host node on RRPP ring notifies this transmission node to be in the Route-Down state, makes host node temporarily not block secondary port to data message forwarding function; Detect the MPLS network when the route of transmission node can reach at this transmission node, notify this transmission node to be in the Route-Up state to host node, this moment, host node blocked secondary port to data message forwarding function.The invention enables the RRPP ring net after abnormal restarting appears in transmission node, can be behind the route recovery of this transmission node at the MPLS network, host node carries out port again and switches, Business Stream can switch on the path of having finished route learning after making the port of host node switch to finish, thereby the shortening time of service interruption has improved the reliability of RRPP ring effectively.
Description of drawings
Fig. 1 is that MPLS forms schematic diagram in conjunction with the network of RRPP;
Fig. 2 is a switch C flow forward-path schematic diagram just often;
Flow forward-path schematic diagram when Fig. 3 is switch C fault;
Fig. 4 is switch recovery flow interrupt schematic diagram just often;
Fig. 5 transmits schematic diagram for the C fault recovery way of escape of changing planes that adds provided by the invention by the flow in the learning process;
Fig. 6 is that the flow after the switch C fault recovery way of escape provided by the invention is finished by study is transmitted schematic diagram;
The structural representation of the transmission node that Fig. 7 provides for the embodiment of the invention;
The structural representation of the host node that Fig. 8 provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Method provided by the invention mainly comprises: when transmission node newly added RRPP ring, the host node on this RRPP ring notified this transmission node to be in routing failure (Route-Down) state, so that host node does not block secondary port; This transmission node detects the MPLS network when the route of this transmission node can reach, and the host node on this RRPP ring notifies this transmission node to be in route recovery (Route-UP) state, so that host node blocks secondary port.
Be example still below, said method be described in detail by specific embodiment with framework shown in Figure 1.
Can increase a kind of RRPP control message among the present invention newly, type is route indication (Route-Ready) message, and this Route-Ready message sends to host node by transmission node, is divided into Route-Up and Route-Down two states.
Transmission node on RRPP transmission ring during i.e. switch C fault recovery among Fig. 4, sends the Route-Ready message that carries the indication of Route-Down state to host node immediately.Particularly, during switch C fault recovery, can receive the RRPP control message that host node sends on RRPP ring by master port, this RRPP control message comprises the indication information of RRPP domain.After switch C receives this RRPP control message, for example hello (hello) message or health (Health) message, then switch C confirms self new this RRPP ring that adds, and can control the indication information that obtain RRPP domain message from this RRPP, at this moment, switch C sends the Route-Ready message that carries the indication of Route-Down state to host node on RRPP ring, as shown in Figure 5.Need to prove that present embodiment is with the example of switch C fault recovery as a kind of new adding RRPP ring, the present invention also is applicable to the situation of other new adding RRPP ring, for example, and the situation of a switch of new configuration on RRPP ring.
In the present embodiment can be in advance on switch C IP address of configuration be used to carry out the MPLS network and whether can reach to the route of this switch C.The IP address of this configuration can be the IP address of the PE in the MPLS network, can be configured according to the network composition situation of reality, for example, the IP address of configuration switch A on switch C in advance, the IP address of switch A is 202.1.1.1, orders at RRPP of RRPP ring configuration on switch C: rrpp route-ready 202.1.1.1enable.
When switch C fault recovery, switch C begins the IP address of configuration is periodically detected, and can reach to this IP address in case detect switch C, as shown in Figure 5, determines that then the MPLS network can reach to the route of switch C.In detecting the process of the route of MPLS network to switch C before can reaching, the message forwarding path of data vlan is promptly transmitted by the secondary port of host node still as shown in phantom in Figure 5.
Even if being switch D, host node detects the RRPP recovery normally, promptly the RRPP control message that sends from master port can receive from secondary port, but owing to receive the Route-Ready message of the Route-Down state that the carries indication of switch C transmission, switch C wouldn't carry out port and switch, promptly do not block secondary port, but the message that continues to adopt secondary port to carry out data vlan is transmitted.
Particularly, switch C to the IP address of configuration carry out periodically detection mode can for: the IP address with this configuration is that destination address periodically sends BFD detection messages or heartbeat ping message etc.For example, periodically send the BFD detection messages of purpose IP address,, determine that then this IP address can reach, otherwise determine that this IP address is unreachable if receive the BFD back message using in the setting-up time after transmission for the IP address of configuration.
In case router C determines the MPLS network and can reach to the route of this router C, then stops to send the Route-Ready message that carries the indication of Route-Down state.Host node does not receive the Route-Ready message that carries the indication of Route-Down state in setting-up time, then carry out port and switch, and promptly blocks the message forwarding capability of secondary port to data VLAN.
Perhaps, can reach to the router of this router C, then send the Route-Ready message that carries the indication of Route-Up state to host node in case router C determines the MPLS network.After host node receives the Route-Ready message that carries the indication of Route-Up state, carry out port and switch, promptly block the message forwarding capability of secondary port data VLAN.
As shown in Figure 6, after host node blocks the message forwarding capability of secondary port to data VLAN, because the link between switch C and the switch D does not dispose VLAN, therefore, revert to switch A-B-C-F to the data forwarding paths between the data center 2 according to the route LAN1 that recovers.
More than be the detailed description that method provided by the present invention is carried out, below transmission node provided by the present invention and host node be described in detail.
The structural representation of the transmission node that Fig. 7 provides for the embodiment of the invention, as shown in Figure 7, this transmission node can comprise: start processing unit 701, notice transmitting element 702 and route exploration unit 703.
Start processing unit 701, be used for determining that transmission node newly adds RRPP ring.
Notice transmitting element 702, be used for when startup processing unit 701 determines that these transmission nodes newly add RRPP ring, host node on RRPP ring notifies this transmission node to be in the Route-Down state, so that host node does not block secondary port to data message forwarding function; Detect the MPLS network in route exploration unit 703 when the route of transmission node can reach, the host node notification transmission node on RRPP ring is in the Route-Up state, so that host node blocks secondary port to data message forwarding function.
Whether route exploration unit 703 is used to survey the MPLS network and can reaches to the route of transmission node.
Particularly, start processing unit 701 after this transmission node starts, if after receiving the RRPP control message of the indication information that comprises the affiliated RRPP domain of RRPP ring, determine that transmission node newly adds RRPP ring.
Wherein, when notice transmitting element 702 determined that at startup processing unit 701 transmission nodes newly add RRPP ring, periodically the host node on RRPP ring sent the Route-Ready message that carries the indication of Route-Down state; The route of transmission node detects the MPLS network in route exploration unit 702 when can reach, the host node that stops on RRPP ring sends the route indication Route-Ready message that carries the indication of Route-Down state, perhaps, the host node on RRPP ring sends the Route-Ready message that carries the indication of Route-Up state.
Route exploration unit 703 can be that destination address periodically sends detection messages with pre-configured IP address, if receive the detection back message using in the setting-up time after sending detection messages, then detects the MPLS network and can reach to the route of transmission node; Wherein, the IP address of configuration is the IP address of the PE in the MPLS network.
The structural representation of the host node that Fig. 8 provides for the embodiment of the invention, as shown in Figure 8, this host node can comprise: looped network detecting unit 801, notice acquiring unit 802 and port switch unit 803.
Whether looped network detecting unit 801, it is normal to be used to detect the RRPP ring net.
Particularly, looped network detecting unit 801 can periodically send the RRPP control message that comprises the indication information of RRPP domain under the RRPP ring by master port, if receive this RRPP control message by secondary port, determine that then the RRPP ring net is normal, if do not receive this RRPP control message, then determine RRPP ring net fault by secondary port.
Wherein, above-mentioned notice acquiring unit 802 can specifically comprise: notice receives subelement 8021, overtime timer 8022 and triggers and handle subelement 8023.
Notice receives subelement 8021, is used to receive the Route-Ready message that transmission node is periodically indicated to the Route-Down state that carries of host node transmission; Perhaps, receive the Route-Ready message of transmission node to the Route-Up state that the carries indication of host node transmission.
Trigger and handle subelement 8023, be used for when notice reception subelement 8021 receives the Route-Ready message that carries the indication of Route-Down state, forbid that port switch unit 803 blocks secondary port to data message forwarding function; When overtime timer 8022 reaches default overtime duration, perhaps, when notice receives subelement 8021 and receives the Route-Ready message that carries the indication of Route-Up state, trigger port switch unit 803 and block secondary port data message forwarding function.
Above-mentioned default overtime duration can be set according to the network composition situation of reality, for example, can be set to carry three times of transmission cycle of the Route-Ready message of Route-Down state indication.
By above description as can be seen, in the method and apparatus provided by the invention, transmission node is when newly adding RRPP ring, and the host node on RRPP ring notifies this transmission node to be in the Route-Down state, makes host node temporarily not block secondary port to data message forwarding function; Detect the MPLS network when the route of transmission node can reach at this transmission node, notify this transmission node to be in the Route-Up state to host node, this moment, host node blocked secondary port to data message forwarding function.The invention enables the RRPP ring net after abnormal restarting appears in transmission node, can be behind the route recovery of this transmission node at the MPLS network, host node carries out port again and switches, Business Stream can switch on the path of having finished route learning after making the port of host node switch to finish, thereby the shortening time of service interruption has improved the reliability of RRPP ring effectively.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (14)
1. the changing method on the rapid ring protection protocol RRPP ring is applied to the scene of multiprotocol label switching MPLS network in conjunction with RRPP ring, it is characterized in that this method comprises:
When transmission node newly added RRPP ring, the host node on described RRPP ring notified described transmission node to be in routing failure Route-Down state, so that host node does not block secondary port to data message forwarding function;
Described transmission node detects the MPLS network when the route of described transmission node can reach, and the host node on described RRPP ring notifies described transmission node to be in route recovery Route-Up state, so that host node blocks secondary port to data message forwarding function.
2. method according to claim 1 is characterized in that, receive the RRPP control message that comprises the indication information of RRPP domain under the described RRPP ring after described transmission node starts after, confirm the new described RRPP ring that adds.
3. method according to claim 1, it is characterized in that, notify described transmission node to be in the Route-Down state to the host node on the described RRPP ring and specifically comprise: the described transmission node periodically host node on described RRPP ring sends the route indication Route-Ready message that carries the indication of Route-Down state;
Notifying described transmission node to be in route recovery Route-Up state to the host node on the described RRPP ring specifically comprises: the host node that described transmission node stops on described RRPP ring sends the route indication Route-Ready message that carries the indication of Route-Down state; Perhaps, the host node of described transmission node on described RRPP ring sends the Route-Ready message that carries the indication of route recovery Route-Up state.
4. according to the described method of the arbitrary claim of claim 1 to 3, it is characterized in that, described transmission node detects the MPLS network and can reach specifically to the route of described transmission node and comprise: described transmission node is that destination address periodically sends detection messages with pre-configured IP address, if receive the detection back message using in the setting-up time after sending detection messages, then detect the MPLS network and can reach to the route of described transmission node; Wherein, the IP address of described configuration is the IP address of the provider edge equipment PE in the described MPLS network.
5. the changing method on the RRPP ring is applied to the scene of MPLS network in conjunction with RRPP ring, it is characterized in that this method comprises:
After the transmission node that host node on the RRPP ring receives new adding RRPP ring is in the notice of Route-Down state, do not block secondary port to data message forwarding function;
It is normal and get access to after described transmission node is in the notice of Route-UP state that described host node detects RRPP ring, blocks secondary port to data message forwarding function; Wherein, to be in the notice of Route-Up state be that described transmission node detects the MPLS network and sends when the route of described transmission node can reach to described transmission node.
6. method according to claim 5 is characterized in that, this method also comprises: described host node periodically sends the RRPP control message that comprises the indication information of RRPP domain under the described RRPP ring by master port.
7. according to claim 5 or 6 described methods, it is characterized in that the notice that the transmission node of described new adding RRPP ring is in the Route-Down state is: the Route-Ready message that the Route-Down state that carries that described transmission node periodically sends to described host node is indicated;
Describedly get access to the notice that transmission node is in the Route-Up state and be: setting-up time does not receive the Route-Ready message that carries the indication of Route-Down state at interval; Perhaps, receive the Route-Ready message of described transmission node to the Route-Up state that the carries indication of described host node transmission.
8. the transmission node on the RRPP ring is applied to the scene of MPLS network in conjunction with RRPP ring, it is characterized in that this transmission node comprises: start processing unit, notice transmitting element and route exploration unit;
Described startup processing unit is used for determining that described transmission node newly adds RRPP ring;
Described notice transmitting element, be used for when described startup processing unit determines that described transmission node newly adds RRPP ring, host node on described RRPP ring notifies described transmission node to be in the Route-Down state, so that described host node does not block secondary port to data message forwarding function; The route of described transmission node detects the MPLS network in described route exploration unit when can reach, host node on described RRPP ring notifies described transmission node to be in the Route-Up state, so that described host node blocks secondary port to data message forwarding function;
Whether described route exploration unit is used to survey the MPLS network and can reaches to the route of described transmission node.
9. transmission node according to claim 8, it is characterized in that, if described startup processing unit after receiving the RRPP control message of the indication information that comprises the affiliated RRPP domain of described RRPP ring, is determined the described RRPP ring of the new adding of described transmission node after described transmission node starts.
10. transmission node according to claim 8, it is characterized in that, when described notice transmitting element determined that at described startup processing unit described transmission node newly adds RRPP ring, periodically the host node on described RRPP ring sent the Route-Ready message that carries the indication of Route-Down state; The route of described transmission node detects the MPLS network in described route exploration unit when can reach, the host node that stops on described RRPP ring sends the route indication Route-Ready message that carries the indication of Route-Down state, perhaps, the host node on described RRPP ring sends the Route-Ready message that carries the indication of Route-Up state.
11. according to Claim 8 to the described method of 10 arbitrary claims, it is characterized in that, described route exploration unit is that destination address periodically sends detection messages with pre-configured IP address, if receive the detection back message using in the setting-up time after sending detection messages, then detect the MPLS network and can reach to the route of described transmission node; Wherein, the IP address of described configuration is the IP address of the PE in the described MPLS network.
12. the host node on the RRPP ring is applied to the scene of MPLS network in conjunction with RRPP ring, it is characterized in that this host node comprises: looped network detecting unit, notice acquiring unit and port switch unit;
The looped network detecting unit, whether be used to detect the RRPP ring net normal;
The notice acquiring unit after the transmission node that is used to receive new adding RRPP ring is in the notice of Route-Down state, forbids that described port switch unit blocks secondary port to data message forwarding function; Get access to after described transmission node is in the notice of Route-UP state, trigger described port switch unit and block secondary port data message forwarding function;
Described port switch unit, be used for described looped network detecting unit detect the RRPP ring net normal and be subjected to the triggering of described notice acquiring unit after, block secondary port to data message forwarding function.
13. host node according to claim 12, it is characterized in that, described looped network detecting unit periodically sends the RRPP control message that comprises the indication information of RRPP domain under the described RRPP ring by master port, if receive this RRPP control message by secondary port, determine that then described RRPP ring net is normal, if do not receive this RRPP control message, then determine described RRPP ring net fault by secondary port.
14., it is characterized in that described notice acquiring unit specifically comprises according to claim 12 or 13 described host nodes: notice receives subelement, overtime timer and triggering and handles subelement;
Described notice receives subelement, is used to receive the Route-Ready message that described transmission node is periodically indicated to the Route-Down state that carries of described host node transmission; Perhaps, receive the Route-Ready message of described transmission node to the Route-Up state that the carries indication of described host node transmission;
Described overtime timer is used for restarting when described notice reception subelement receives the Route-Ready message of the described Route-Down of carrying state indication;
Subelement is handled in described triggering, is used for forbidding that described port switch unit blocks secondary port to data message forwarding function when described notice reception subelement receives the Route-Ready message of the described Route-Down of carrying state indication; When described overtime timer reaches default overtime duration, perhaps, when described notice reception subelement receives the Route-Ready message of the described Route-Up of carrying state indication, trigger described port switch unit and block secondary port data message forwarding function.
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| CN104468347A (en) * | 2013-09-18 | 2015-03-25 | 中兴通讯股份有限公司 | Method and device for controlling self-loopback of network data |
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| CN110830324A (en) * | 2019-10-28 | 2020-02-21 | 烽火通信科技股份有限公司 | Method and device for detecting network connectivity of data center and electronic equipment |
| CN112804116A (en) * | 2020-06-30 | 2021-05-14 | 中兴通讯股份有限公司 | Link detection method, electronic device and computer readable medium |
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