CN104702498A - Method and device for reducing the number of optical connections through coordination protection - Google Patents
Method and device for reducing the number of optical connections through coordination protection Download PDFInfo
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Abstract
The invention discloses a method for reducing the number of optical connections through coordination protection. The method comprises the following steps: a piece of PTN core layer equipment detects a fault between the PTN core layer equipment and a remote PE node/LTE core network equipment; when a link between the PTN core layer equipment and the remote PE node/LTE core network equipment has a fault, the LTE core network equipment/the remote PE node is notified of an IP network segment address associated with the fault; and the LTE core network equipment/remote PE node starts IP FRR/VPN FRR protection and switches a route of a faulty IP network segment to a spare router after receiving the faulty IP network segment. The invention further discloses a device for reducing the number of optical connections through coordination protection. By adopting the method and the device of the invention, an LTE service does not need to bypass between PTN core layer equipment at two ends, and the number of optical connections of between the PTN core layer equipment is reduced.
Description
Technical field
The present invention relates to the network coordination resist technology of the communications field, particularly relate to a kind of method and the device that are reduced equipment room light number of connection by harmonious protection.
Background technology
Existing Packet Transport Network (PTN, Packet Transport Network) framework generally by key ring, converge ring and access ring or access chain forms, 3GPP Long Term Evolution (LTE is carried at employing PTN, Long Term Evolution) business time, the common a kind of networking topology of PTN network is the group network topological structure of two first line of a couplet form, as shown in Figure 1.In the two first line of a couplet networking topologys shown in Fig. 1; usual meeting configures Layer3 Virtual Private Network (L3VPN in core layer PTN device and key convergence device; Layer3VirtualPrivate Network); cut-in convergent layer configures two layer virtual private network (L2VPN; Layer2VirtualPrivate Network), adopt the mode of L2VPN+L3VPN to carry out carrying and the scheduling of LTE business.
In existing resist technology; at PTN core layer equipment (PE1 and PE2 as in Fig. 1) and LTE core network equipment as SGW (sGW; Signaling Gateway)/mobile management entity (MME; Mobility Management Entity) between configuration of IP Quickly regroup (IP FRR; IP Fast ReRoute) protection; and adopt two-way converting detection (BFD, Bidirectional Forwarding Detection) mechanism to come fast detecting link or node failure.In PTN core layer L3VPN network; then label allocation switching path (LSP; Label Switching Path) linear protection protects internal link fault; configuration Quickly regroup (VPN FRR; Fast ReRoute) protect and protect PE node failure; also adopt BFD mechanism to detect peer failure, to accelerate the speed that VPN FRR switches between PE node simultaneously.Under this protection architecture, light must be had between PTN core layer equipment to connect, so that at L3VPN internal optical fiber link failure or between PTN nucleus equipment and LTE core network equipment during link occurs fault, business can to detour PE1 via PE2.
In order to ensure that the bandwidth between PE1 and PE2 can meet the protection demand of all business; corresponding each organize key convergence device; need at least one pair of optical fiber to connect; in actual applications; in order to ensure carrying out smoothly of business; multipair optical fiber must be adopted between PE1 and PE2 to connect, and when network size is larger, this group network topological structure will consume very many fiber resources and equipment interface resource.
Summary of the invention
In view of this, the embodiment of the present invention is expected to provide a kind of method and the device that are reduced equipment room light number of connection by harmonious protection, by harmonious protection mechanism, can reduce the optical interface to PTN core layer equipment and amount of light demand.
For achieving the above object, technical scheme of the present invention is achieved in that
Embodiments provide a kind of method being reduced equipment room light number of connection by harmonious protection, described method comprises:
PTN core layer equipment detects the fault between far-end PE node;
When the link failure between described PTN core layer equipment and far-end PE node being detected, by the IP network sector address relevant to fault notice LTE core network equipment;
After LTE core network equipment receives described fault IP network section, start IP FRR protection by the route handoff of described fault IP network section to alternate routing.
In such scheme, describedly by the IP network sector address relevant to fault notice LTE core network equipment be:
By relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and LTE core network equipment, notify LTE core network equipment;
Wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to LTE core network equipment is: the BFD protocol massages after change is mail to LTE core network equipment;
Corresponding, described LTE core network equipment receives described fault IP network section and is: LTE core network equipment parses fault IP network sector address from the BFD message received.
In such scheme, described method also comprises:
Whether the fault that PTN core layer equipment detects between far-end PE node disappears;
When detecting that the link failure between described PTN core layer equipment and far-end PE node disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to LTE core network equipment;
Corresponding, when described LTE core network equipment does not receive fault IP network sector address, start IP FRR protection by route switchback.
The embodiment of the present invention additionally provides a kind of method being reduced equipment room light number of connection by harmonious protection, and described method comprises:
PTN core layer equipment detects the fault between LTE core network equipment;
When the link failure of described PTN core layer equipment and LTE core network equipment being detected, by the IP network sector address relevant to fault notice far-end PE node;
After far-end PE node receives described fault IP network section, start VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
In such scheme, describedly by the IP network sector address relevant to fault notice far-end PE node be:
By relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and far-end PE node, notify far-end PE node;
Wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to far-end PE node is: the BFD protocol massages after change is mail to far-end PE node;
Corresponding, described far-end PE node receives described fault IP network section and is: far-end PE node parses fault IP network sector address from the BFD message received.
In such scheme, described method also comprises:
Whether the fault that PTN core layer equipment detects between LTE core network equipment disappears;
When detecting that the link failure of described PTN core layer equipment and LTE core network equipment disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to far-end PE node;
Corresponding, when described far-end PE node does not receive fault IP network sector address, start VPN FRR protection by route switchback.
The embodiment of the present invention additionally provides a kind of device being reduced equipment room light number of connection by harmonious protection, described device comprises: detecting unit, notification unit, switch unit, wherein, described detecting unit, notification unit are positioned at PTN core layer equipment, described switch unit, is positioned at LTE core network equipment;
Described detecting unit, for detecting the fault between far-end PE node;
Described notification unit, for when the link failure between described PTN core layer equipment and far-end PE node being detected, by the IP network sector address relevant to fault notice LTE core network equipment;
Described switch unit, for after receiving described fault IP network section, starts IP FRR protection by the route handoff of described fault IP network section to alternate routing.
In such scheme, whether described detecting unit, also disappear for the link failure detected between described PTN core layer equipment and far-end PE node;
Described notification unit, also for when detecting that the link failure between described PTN core layer equipment and far-end PE node disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to LTE core network equipment;
Described switch unit, also for when not receiving fault IP network sector address, starts IP FRR protection by route switchback.
The embodiment of the present invention additionally provides a kind of device being reduced equipment room light number of connection by harmonious protection, described device comprises: detecting unit, notification unit, switch unit, wherein, described detecting unit, notification unit are positioned at PTN core layer equipment, described switch unit, is positioned at far-end PE node;
Described detecting unit, for detecting the fault between LTE core network equipment;
Described notification unit, for when the link failure of described PTN core layer equipment and LTE core network equipment being detected, by the IP network sector address relevant to fault notice far-end PE node;
Described switch unit, for after receiving described fault IP network section, starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
In such scheme, whether the link failure of described detecting unit also for detecting described PTN core layer equipment and LTE core network equipment disappears;
Described notification unit, also for when detecting that the link failure of described PTN core layer equipment and LTE core network equipment disappears, deletes described IP network sector address from described BFD protocol extension field, and the BFD protocol massages after change is mail to far-end PE node;
Described switch unit, also for when not receiving fault IP network sector address, starts VPN FRR protection by route switchback.
The method and the device that are reduced equipment room light number of connection by harmonious protection that the embodiment of the present invention provides, according to the BFD agreement between PTN core layer equipment and LTE core network equipment, and the BFD agreement between the PE of the inner L3VPN of PTN network, detect the fault between PTN core layer equipment and far-end PE node and the fault between PTN core layer equipment and LTE core network equipment, and pass through failure notification mechanism, make the fault that in the L3VPN of PTN network inside, between PTN core layer equipment and far-end PE node, certain IP network section route occurs can be delivered to LTE core network equipment, fault simultaneously between PTN core layer equipment and LTE core network equipment also can notify the L3VPN far-end PE node of PTN inside, to start the routing switch harmonious protection of LTE core network equipment and far-end PE node, LTE business is made not need to detour between the PTN core layer equipment of two ends, thus save PTN core layer equipment light number of connection.
Accompanying drawing explanation
Fig. 1 is a kind of networking topological diagram of two first line of a couplet forms of existing PTN network;
Fig. 2 is the networking topological diagram broken down between the embodiment of the present invention one PTN core layer equipment and far-end PE node;
Fig. 3 is that the embodiment of the present invention one reduces the method flow schematic diagram of equipment room light number of connection by harmonious protection;
Fig. 4 is that the embodiment of the present invention two reduces the method flow schematic diagram of equipment room light number of connection by harmonious protection;
Fig. 5 is the networking topological diagram broken down between the embodiment of the present invention three PTN core layer equipment and LTE core network equipment;
Fig. 6 is that the embodiment of the present invention three reduces the method flow schematic diagram of equipment room light number of connection by harmonious protection;
Fig. 7 is that the embodiment of the present invention four reduces the method flow schematic diagram of equipment room light number of connection by harmonious protection;
Fig. 8 is the embodiment of the present invention reduces the device of equipment room light number of connection composition structural representation by harmonious protection;
Fig. 9 is another embodiment of the present invention reduces the device of equipment room light number of connection composition structural representation by harmonious protection.
Embodiment
In embodiments of the present invention, PTN core layer equipment detects the fault between far-end PE node; When the link failure between described PTN core layer equipment and far-end PE node being detected, by the IP network sector address relevant to fault notice LTE core network equipment; LTE core network equipment, after receiving described fault IP network section, starts IP FRR protection by the route handoff of described fault IP network section to alternate routing; Or PTN core layer equipment detects the fault between LTE core network equipment; When the link failure of described PTN core layer equipment and LTE core network equipment being detected, by the IP network sector address relevant to fault notice far-end PE node; Far-end PE node, after receiving described fault IP network section, starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
Here, describedly by the IP network sector address relevant to fault notice LTE core network equipment/far-end PE node be: by relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and LTE core network equipment/far-end PE node, notify LTE core network equipment/far-end PE node, wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to LTE core network equipment/far-end PE node is: the BFD protocol massages after change is mail to LTE core network equipment/far-end PE node.Corresponding, described LTE core network equipment/far-end PE node receives described fault IP network section and is: LTE core network equipment/far-end PE node parses fault IP network sector address from the BFD message received.
The extended method of BFD agreement, as shown in table 1, after original agreement PDU, increase several Optional Field, for describing the IP network section broken down.In table 1 last column content be the Optional Field that newly increases wherein:
Disabled IP addr Type: represent that follow-up field is fault IP network sector address content, the value of this Type can not repeat with existing Auth Type value;
IP addr num: the number representing IP address network segment in subsequent packet;
IP addr data: represent concrete fault IP network segment value, multiple IP network segment value may be comprised here.
Table 1
Start IP FRR protection by after the route handoff of described fault IP network section to alternate routing, described PTN core layer equipment continues to detect the fault between far-end PE node, when detecting that the link failure between described PTN core layer equipment and far-end PE node disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to LTE core network equipment; Corresponding, when described LTE core network equipment does not receive fault IP network sector address, start IP FRR protection by route switchback.
Corresponding, start VPN FRR protection by after the route handoff of described fault IP network section to alternate routing, described PTN core layer equipment continues to detect the fault between LTE core network equipment, when detecting that the link failure of described PTN core layer equipment and LTE core network equipment disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to far-end PE node; Corresponding, when described far-end PE node does not receive fault IP network sector address, start VPN FRR protection by route switchback.
Described LTE core network equipment can be but be not limited to sGW/MME.
Below in conjunction with drawings and the specific embodiments, the enforcement of embodiment of the present invention technical scheme is described in further detail.Fig. 2 is the networking topological diagram broken down between the embodiment of the present invention one PTN core layer equipment and far-end PE node, and in the present embodiment, LTE core network equipment is PE1 and PE2 in figure for sGW, PTN core layer equipment, and far-end PE node is PE3-PE8.When there is fault described in Fig. 2, due in prior art, Fiber connection is there is between PE1 and PE2, sGW is sent to the downlink business of PE1 can by the Fiber connection between PE1 and PE2, be sent to PE2, be forwarded to far-end PE node via PE2, such as, when described downlink business is the business mailing to eNB-1, service path of the prior art is sGW-PE1-PE2-PE4-eNB-1.The embodiment of the present invention is by a kind of failure notification mechanism, make LTE core network equipment can fault between perception PTN core layer equipment and far-end PE node, thus routing switch is realized in LTE core network equipment, such as when described downlink business is the business mailing to eNB-1, service path in the embodiment of the present invention is that sGW-PE2-PE4-eNB-1 is like this, downlink business can no longer be connected by the light between PE1 and PE2, thus reduces equipment room light number of connection.
Fig. 3 is that the embodiment of the present invention one reduces the method flow schematic diagram of equipment room light number of connection by harmonious protection, and as shown in Figure 3, the method that the embodiment of the present invention one reduces equipment room light number of connection by harmonious protection comprises the following steps:
Step 301:PTN core layer equipment detects the fault between far-end PE node;
Fault between described detection and far-end PE node can adopt BFD or multiprotocol label switching-transport architecture (MPLS-TP, Multi-Protocol Label Switching) method such as operation management maintain (OAM, Operation Administration and Maintenance) realizes.
Step 302: when the link failure between described PTN core layer equipment and far-end PE node being detected, by the IP network sector address relevant to fault notice LTE core network equipment;
Describedly by the IP network sector address relevant to fault notice LTE core network equipment be: by relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and LTE core network equipment, notify LTE core network equipment, wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to LTE core network equipment is: the BFD protocol massages after change is mail to LTE core network equipment.
The extended method of BFD agreement, as shown in table 1, after original agreement PDU, increase several Optional Field, for describing the IP network section broken down.
After step 303:LTE equipment of the core network receives described fault IP network section, start IP FRR protection by the route handoff of described fault IP network section to alternate routing;
Concrete, LTE core network equipment parses fault IP network sector address from the BFD message received, and starts IP FRR protection by the route handoff of described fault IP network section to alternate routing.
Further, the present invention also comprises: whether the fault that PTN core layer equipment detects between far-end PE node disappears.When detecting that the link failure between described PTN core layer equipment and far-end PE node disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to LTE core network equipment; Corresponding, when described LTE core network equipment does not receive fault IP network sector address, start IP FRR protection by route switchback.
Fig. 4 is that the embodiment of the present invention two reduces the method flow schematic diagram of equipment room light number of connection by harmonious protection; As shown in Figure 4, the method that the embodiment of the present invention two reduces equipment room light number of connection by harmonious protection comprises the following steps:
Step 401:PTN core layer equipment judges whether the fault between far-end PE node changes; When fault produces, perform step 402; When failure vanishes, perform step 404;
Described fault is produced as: there is not fault between former PTN core layer equipment and far-end PE node, break down after testing; Described failure vanishes is: there is fault between former PTN core layer equipment and far-end PE node, failure vanishes after testing.
Step 402: when the link failure between described PTN core layer equipment and far-end PE node being detected, by the IP network sector address relevant to fault notice Long Term Evolution LTE core network equipment;
Describedly by the IP network sector address relevant to fault notice LTE core network equipment be: by relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and LTE core network equipment, notify LTE core network equipment, wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to LTE core network equipment is: the BFD protocol massages after change is mail to LTE core network equipment.
The extended method of BFD agreement, as shown in table 1, after original agreement PDU, increase several Optional Field, for describing the IP network section broken down.
After step 403:LTE equipment of the core network receives described fault IP network section, start IP FRR protection by the route handoff of described fault IP network section to alternate routing; This flow process terminates.
Concrete, LTE core network equipment parses fault IP network sector address from the BFD message received, and starts IP FRR protection by the route handoff of described fault IP network section to alternate routing.
Step 404: when the failure vanishes in the link between described PTN core layer equipment and far-end PE node being detected, by described failure vanishes relevant information notice Long Term Evolution LTE core network equipment;
Describedly by described failure vanishes relevant information notice Long Term Evolution LTE core network equipment be: described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to LTE core network equipment.
Step 405: when described LTE core network equipment does not receive fault IP network sector address, starts IP FRR protection by route switchback.
Concrete, LTE core network equipment does not parse fault IP network sector address from the BFD message received, and starts IP FRR protection by the route switchback of the IP network section of described failure vanishes.
Fig. 5 is the networking topological diagram of the fault of the embodiment of the present invention three PTN core layer equipment and LTE core network equipment room, and in the present embodiment, LTE core network equipment is PE1 and PE2 in figure for sGW, PTN core layer equipment, and far-end PE node is PE3-PE8.When there is fault described in Fig. 5, due in prior art, Fiber connection is there is between PE1 and PE2, after uplink service is sent to PE1 by PE3, PE1 by the Fiber connection between PE1 and PE2, can be forwarded to PE2, is forwarded to LTE core network equipment via PE2, such as when described uplink service is the business of eNB-1 initiation, service path of the prior art is eNB-1-PE3-PE1-PE2-sGW.The embodiment of the present invention is by a kind of failure notification mechanism, make far-end PE node can fault between perception PTN core layer equipment and LTE core network equipment, thus routing switch is realized in far-end PE node, such as when described uplink service is the business of eNB-1 initiation, the service path in the embodiment of the present invention is eNB-1-PE4-PE2-sGW.So, uplink service can no longer be connected by the light between PE1 and PE2, thus reduces equipment room light number of connection.
Fig. 6 is that the embodiment of the present invention three reduces the method flow schematic diagram of equipment room light number of connection by harmonious protection, and as shown in Figure 6, the method that the embodiment of the present invention three reduces equipment room light number of connection by harmonious protection comprises the following steps:
Step 601:PTN core layer equipment detects the fault between LTE core network equipment;
Fault between described detection and far-end PE node can adopt the method such as BFD or physical interface detection to realize.
Step 602: when the link failure between described PTN core layer equipment and LTE core network equipment being detected, by the IP network sector address relevant to fault notice far-end PE node;
Describedly by the IP network sector address relevant to fault notice far-end PE node be: by relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and far-end PE node, notify far-end PE node device, wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to far-end PE node is: the BFD protocol massages after change is mail to far-end PE node.
The extended method of BFD agreement, as shown in table 1, after original agreement PDU, increase several Optional Field, for describing the IP network section broken down.
Step 603: after far-end PE node receives described fault IP network section, starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing;
Concrete, far-end PE node parses fault IP network sector address from the BFD message received, and starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
Further, the present invention also comprises: whether the fault that PTN core layer equipment detects between LTE core network equipment disappears.When detecting that the link failure between described PTN core layer equipment and LTE core network equipment disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to far-end PE node; Corresponding, when described far-end PE node does not receive fault IP network sector address, start IP FRR protection by route switchback.
Fig. 7 is that the embodiment of the present invention four reduces the method flow schematic diagram of equipment room light number of connection by harmonious protection; As shown in Figure 7, the method that the embodiment of the present invention four reduces equipment room light number of connection by harmonious protection comprises the following steps:
Step 701:PTN core layer equipment judges whether the fault between LTE core network equipment changes; When fault produces, perform step 702; When failure vanishes, perform step 704;
Described fault is produced as: there is not fault between former PTN core layer equipment and LTE core network equipment, break down after testing; Described failure vanishes is: there is fault between former PTN core layer equipment and LTE core network equipment, failure vanishes after testing.
Step 702: when the link failure between described PTN core layer equipment and LTE core network equipment being detected, by the IP network sector address relevant to fault notice far-end PE node;
Describedly by the IP network sector address relevant to fault notice far-end PE node be: by relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and far-end PE node, notify far-end PE node, be specially: in original BFD agreement, increase the Optional Field for describing the IP network section broken down, and the BFD protocol massages after change is mail to far-end PE node.
The extended method of BFD agreement, as shown in table 1, after original agreement PDU, increase several Optional Field, for describing the IP network section broken down.
Step 703: after far-end PE node receives described fault IP network section, starts VPN FRR protection, by the route handoff of described fault IP network section to alternate routing; This flow process terminates.
Concrete, far-end PE node parses fault IP network sector address from the BFD message received, and starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
Step 704: when the failure vanishes in the link between described PTN core layer equipment and LTE core network equipment being detected, by described failure vanishes relevant information notice far-end PE node;
Describedly by described failure vanishes relevant information notice far-end PE node be: described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to far-end PE node.
Step 705: when described far-end PE node does not receive fault IP network sector address, starts VPN FRR protection by route switchback.
Concrete, far-end PE node does not parse fault IP network sector address from the BFD message received, and starts VPN FRR protection by the route switchback of the IP network section of described failure vanishes.
The embodiment of the present invention additionally provides a kind of device being reduced equipment room light number of connection by harmonious protection; as shown in Figure 8; described device comprises: detecting unit 81, notification unit 82, switch unit 83; wherein; described detecting unit 81, notification unit 82 are positioned at PTN core layer equipment; described switch unit 83, is positioned at LTE core network equipment
Described detecting unit 81, for detecting the fault between far-end PE node;
Described detecting unit 81 fault detected between far-end PE node can adopt the methods such as BFD or MPLS-TPOAM to realize.
Described notification unit 82, for when the link failure between described PTN core layer equipment and far-end PE node being detected, by the IP network sector address relevant to fault notice LTE core network equipment;
The IP network sector address relevant to fault notice LTE core network equipment is by described notification unit 82: by relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and LTE core network equipment, notify LTE core network equipment, wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to LTE core network equipment is: the BFD protocol massages after change is mail to LTE core network equipment.
The extended method of BFD agreement, as shown in table 1, after original agreement PDU, increase several Optional Field, for describing the IP network section broken down.
Described switch unit 83, for after receiving described fault IP network section, starts IP FRR protection by the route handoff of described fault IP network section to alternate routing.
Concrete, described switch unit 83 parses fault IP network sector address from the BFD message received, and starts IP FRR protection by the route handoff of described fault IP network section to alternate routing.
Further, when described device is used for the switchback process after described failure vanishes, whether described detecting unit 81, also disappear for the link failure detected between described PTN core layer equipment and far-end PE node;
Described notification unit 82, also for when detecting that the link failure between described PTN core layer equipment and far-end PE node disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to LTE core network equipment;
Described switch unit 83, also for when not receiving fault IP network sector address, starts IP FRR protection by route switchback.
Concrete, described switch unit 83 does not parse fault IP network sector address from the BFD message received, and starts IP FRR protection by the route switchback of the IP network section of described failure vanishes.
The embodiment of the present invention additionally provides a kind of device being reduced equipment room light number of connection by harmonious protection; as shown in Figure 9; described device comprises: detecting unit 91, notification unit 92, switch unit 93; wherein; described detecting unit 91, notification unit 92 are positioned at PTN core layer equipment; described switch unit 93, is positioned at far-end PE node
Described detecting unit 91, for detecting the fault between LTE core network equipment;
Fault between described detection and far-end PE node can adopt the method such as BFD or physical interface detection to realize.
Described notification unit 92, for when the link failure of described PTN core layer equipment and LTE core network equipment being detected, by the IP network sector address relevant to fault notice far-end PE node;
Describedly by the IP network sector address relevant to fault notice far-end PE node be: by relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and far-end PE node, notify far-end PE node device, wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to far-end PE node is: the BFD protocol massages after change is mail to far-end PE node.
The extended method of BFD agreement, as shown in table 1, after original agreement PDU, increase several Optional Field, for describing the IP network section broken down.
Described switch unit 93, for after receiving described fault IP network section, starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing;
Concrete, described switch unit 93 parses fault IP network sector address from the BFD message received, and starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
Further, when described device is used for the switchback process after described failure vanishes, whether the link failure of described detecting unit 91 also for detecting described PTN core layer equipment and LTE core network equipment disappears;
Described notification unit 92, also for when detecting that the link failure of described PTN core layer equipment and LTE core network equipment disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to far-end PE node;
Described switch unit 93, also for when not receiving fault IP network sector address, starts VPN FRR protection by route switchback.
Concrete, described switch unit 93 parses fault IP network sector address from the BFD message received, and starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
The practical function being reduced each processing unit in the device of equipment room light number of connection by harmonious protection shown in Fig. 8 and Fig. 9, be can refer to the associated description of the aforementioned method by harmonious protection minimizing equipment room light number of connection and understands.Those skilled in the art are to be understood that, being realized by the program run on processor by the function of each processing unit in the device of harmonious protection minimizing equipment room light number of connection shown in Fig. 8 and Fig. 9, also realize by concrete logical circuit, such as: can realize by being positioned at the central processing unit (CPU) of bridging nodes, microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA); Described memory cell also can be realized by various memory or storage medium.
In several embodiment provided by the present invention, should be understood that, disclosed method and apparatus, can realize in other way.Device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, and as: multiple unit or assembly can be in conjunction with, maybe can be integrated into another system, or some features can be ignored, or do not perform.In addition, the communication connection each other of shown or discussed each part can be by some interfaces, the indirect coupling of equipment or module or communication connection, can be electrical, machinery or other forms of.
The above-mentioned unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical module, namely can be positioned at a place, also can be distributed on multiple mixed-media network modules mixed-media; Part or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in various embodiments of the present invention can all be integrated in a processing unit, also can be each unit individually as a unit, also can two or more unit in a unit integrated; Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: movable storage device, read-only memory (ROM, Read-Only Memory), magnetic disc or CD etc. various can be program code stored medium.
Or, if the above-mentioned integrated unit of the embodiment of the present invention using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprises some instructions and performs all or part of of method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server or the network equipment etc.).And aforesaid storage medium comprises: movable storage device, ROM, magnetic disc or CD etc. various can be program code stored medium.
The present invention be record in example reduce the method and apparatus of equipment room light number of connection only for VPN by harmonious protection; but be not limited only to this, as long as relate to this to reduce the method and apparatus of equipment room light number of connection all in protection scope of the present invention by harmonious protection.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (10)
1. reduced a method for equipment room light number of connection by harmonious protection, it is characterized in that, described method comprises:
Packet Transport Network PTN core layer equipment detects the fault between remote edge router PE node;
When the link failure between described PTN core layer equipment and far-end PE node being detected, by the IP network sector address relevant to fault notice Long Term Evolution LTE core network equipment;
After LTE core network equipment receives described fault IP network section, start IP Quickly regroup IP FRR protection by the route handoff of described fault IP network section to alternate routing.
2. method according to claim 1, is characterized in that, describedly by the IP network sector address relevant to fault notice LTE core network equipment is:
By relevant fault IP network sector address, detect BFD protocol extension field by the two-way converting between PTN core layer equipment and LTE core network equipment, notify LTE core network equipment;
Wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to LTE core network equipment is: the BFD protocol massages after change is mail to LTE core network equipment;
Corresponding, described LTE core network equipment receives described fault IP network section and is: LTE core network equipment parses fault IP network sector address from the BFD message received.
3. method according to claim 1 or 2, is characterized in that, described method also comprises:
Whether the fault that PTN core layer equipment detects between far-end PE node disappears;
When detecting that the link failure between described PTN core layer equipment and far-end PE node disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to LTE core network equipment;
Corresponding, when described LTE core network equipment does not receive fault IP network sector address, start IP FRR protection by route switchback.
4. reduced a method for equipment room light number of connection by harmonious protection, it is characterized in that, described method comprises:
PTN core layer equipment detects the fault between LTE core network equipment;
When the link failure of described PTN core layer equipment and LTE core network equipment being detected, by the IP network sector address relevant to fault notice far-end PE node;
After far-end PE node receives described fault IP network section, start Quickly regroup VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
5. method according to claim 4, is characterized in that, describedly by the IP network sector address relevant to fault notice far-end PE node is:
By relevant fault IP network sector address, by the BFD protocol extension field between PTN core layer equipment and far-end PE node, notify far-end PE node;
Wherein, described BFD protocol extension field is: in original BFD agreement, increase the Optional Field for describing the IP network section broken down; Described notice to far-end PE node is: the BFD protocol massages after change is mail to far-end PE node;
Corresponding, described far-end PE node receives described fault IP network section and is: far-end PE node parses fault IP network sector address from the BFD message received.
6. method according to claim 4 or 5, is characterized in that, described method also comprises:
Whether the fault that PTN core layer equipment detects between LTE core network equipment disappears;
When detecting that the link failure of described PTN core layer equipment and LTE core network equipment disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to far-end PE node;
Corresponding, when described far-end PE node does not receive fault IP network sector address, start VPN FRR protection by route switchback.
7. reduced a device for equipment room light number of connection by harmonious protection, it is characterized in that, described device comprises: detecting unit, notification unit, switch unit, wherein, described detecting unit, notification unit are positioned at PTN core layer equipment, described switch unit, are positioned at LTE core network equipment;
Described detecting unit, for detecting the fault between far-end PE node;
Described notification unit, for when the link failure between described PTN core layer equipment and far-end PE node being detected, by the IP network sector address relevant to fault notice LTE core network equipment;
Described switch unit, for after receiving described fault IP network section, starts IP FRR protection by the route handoff of described fault IP network section to alternate routing.
8. whether device according to claim 7, is characterized in that, described detecting unit also disappearing for the link failure detected between described PTN core layer equipment and far-end PE node;
Described notification unit, also for when detecting that the link failure between described PTN core layer equipment and far-end PE node disappears, described IP network sector address is deleted from described BFD protocol extension field, and the BFD protocol massages after change is mail to LTE core network equipment;
Described switch unit, also for when not receiving fault IP network sector address, starts IP FRR protection by route switchback.
9. reduced a device for equipment room light number of connection by harmonious protection, it is characterized in that, described device comprises: detecting unit, notification unit, switch unit, wherein, described detecting unit, notification unit are positioned at PTN core layer equipment, described switch unit, are positioned at far-end PE node;
Described detecting unit, for detecting the fault between LTE core network equipment;
Described notification unit, for when the link failure of described PTN core layer equipment and LTE core network equipment being detected, by the IP network sector address relevant to fault notice far-end PE node;
Described switch unit, for after receiving described fault IP network section, starts VPN FRR protection by the route handoff of described fault IP network section to alternate routing.
10. device according to claim 9, it is characterized in that, whether the link failure of described detecting unit also for detecting described PTN core layer equipment and LTE core network equipment disappears;
Described notification unit, also for when detecting that the link failure of described PTN core layer equipment and LTE core network equipment disappears, deletes described IP network sector address from described BFD protocol extension field, and the BFD protocol massages after change is mail to far-end PE node;
Described switch unit, also for when not receiving fault IP network sector address, starts VPN FRR protection by route switchback.
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| CN104702498B (en) | 2018-08-28 |
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