CN113746675B - Method and system for realizing flexible Ethernet service scene by using HQoS - Google Patents
Method and system for realizing flexible Ethernet service scene by using HQoS Download PDFInfo
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Abstract
A method and system for realizing flexible Ethernet service scene by HQoS relates to flexible Ethernet field, the method includes: replacing a FlexE model by a LAG main interface and sub-interface model, wherein the rate of the LAG sub-interface is controlled to be equal to the sum of time slots of the FlexE Shim; replacing a LAG main interface and sub-interface model by an HQoS model, wherein the rate of a PW scheduling node is set to be the same as the rate of the LAG sub-interface; and establishing the HQoS model at least one internal port of the equipment, and transferring the service flow to the LAG member port from the internal port through the corresponding LAG sub-interface after the service flow is forwarded to the HQoS model and the rate is set. The invention can carry out adaptive networking on equipment which does not support the FlexE function and does not support FlexE small particles.
Description
Technical Field
The invention relates to the field of flexible Ethernet, in particular to a method and a system for realizing flexible Ethernet service scene by using HQoS.
Background
FlexE (flexible ethernet) is an interface technology for a bearer network to implement service isolation bearers and network fragmentation.
FlexE generic structures include FlexE Group, flexE Client, and FlexE Shim.
FlexE Client: an ethernet stream based on physical addresses.
FlexE Group: equivalent to a set of bonded ethernet physical layers (PHYs).
FlexE Shim: the core of the whole FlexE can divide each 100GE PHY in the FlexE Group into 20 slots of data-carrying channels, and each Slot corresponds to a bandwidth of 5Gbps.
Ethernet frames in the FlexE Client original data stream are segmented in units of Block atomic data blocks (64/66B encoded data blocks), and the atomic data blocks can be distributed among a plurality of PHYs and time slots in the FlexE Group through FlexE Shim.
With the rapid development of FlexE technology, some older devices do not support FlexE functionality and small devices do not support FlexE small particles. In a large networking environment, the devices cannot adopt a FlexE model networking to carry out bandwidth management, and how to carry out adaptive networking on devices which do not support FlexE functions and small FlexE particles is a problem to be solved in order to realize FlexE service scenes.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a method and a system for realizing flexible Ethernet service scene by using HQoS, which are used for carrying out adaptive networking on equipment which does not support the FlexE function and does not support FlexE small particles.
To achieve the above object, in one aspect, a method for implementing a flexible ethernet service scenario by using HQoS is adopted, including:
replacing a FlexE model by a LAG main interface and sub-interface model, wherein the rate of the LAG sub-interface is controlled to be equal to the sum of time slots of the FlexE Shim;
replacing a LAG main interface and sub-interface model by an HQoS model, wherein the rate of a PW scheduling node is set to be the same as the rate of the LAG sub-interface;
and establishing the HQoS model at least one internal port of the equipment, and transferring the service flow to the LAG member port from the internal port through the corresponding LAG sub-interface after the service flow is forwarded to the HQoS model and the rate is set.
In some embodiments, the replacing FlexE model with LAG main interface+sub interface model further comprises:
at the configuration level, the FlexE Group is replaced by the LAG main interface and the FlexE Client is replaced by the LAG sub-interface.
In some embodiments, the controlling the rate of the LAG subinterface to be equal to the sum of slots of FlexE Shim specifically includes:
at the configuration level, limiting the speed of the LAG sub-interface, wherein the promised information rate of the LAG sub-interface=the peak information rate of the LAG sub-interface=the sum of time slots of the Flexe shims; and the sum of the time slots is preset and does not exceed the sum of the bandwidths of the physical ports of the LAG members.
In some embodiments, the LAG subinterface promises an information rate that is less than the LAG primary interface bandwidth.
In some embodiments, the HQoS model includes PW scheduling nodes including a plurality of queues, LSP nodes including a plurality of PW scheduling nodes, and PORT nodes including a plurality of LSP nodes;
the PW scheduling node and the LSP node may both set a committed information rate and a peak information rate.
In some embodiments, the replacing LAG main interface+sub interface model by the HQoS model further comprises:
in the HQoS model, PW dispatch nodes simulate the LAG subinterface, and PORT nodes are used for mapping an internal PORT of the equipment.
In some embodiments, the setting the rate of the PW scheduling node and the rate of the LAG subinterface are the same, and specifically includes:
setting the promised information rate of PW dispatching nodes=peak information rate=rate of LAG subinterface, and the sum of promised information rates of all PW dispatching nodes is less than or equal to the PORT node bandwidth.
In some embodiments, the traffic is forwarded to the HQoS model, and after the speed limiting process is performed by the PW scheduling node, the traffic is forwarded from the internal port to the LAG sub-interface of the board card through the point-to-point traffic, and the LAG sub-interface forwards the traffic to the LAG member physical port through the Hash algorithm.
On the other hand, the invention also provides a system for realizing flexible Ethernet service scene by HQoS, which comprises:
the LAG main interface and sub interface model is used for replacing a FlexE model;
a first rate configuration module, configured to control a rate of the LAG subinterface to be equal to a sum of slots of the FlexE Shim;
the HQoS model is used for replacing the LAG main interface and sub interface model;
the second rate configuration module is used for setting the same rate of PW scheduling nodes and the same rate of the LAG subinterfaces;
the flow forwarding module is used for selecting at least one internal port in the equipment, establishing the HQoS model, and forwarding the received service flow to the corresponding LAG sub-interface after setting the rate by the HQoS model, and then transmitting the service flow to the LAG member physical port.
In some embodiments, comprising:
the first rate configuration module is further configured to limit, at a configuration level, a sum of timeslots of a committed information rate of the LAG subinterface=a peak information rate of the LAG subinterface=flexe Shim; the sum of the time slots is preset and does not exceed the sum of the bandwidths of the physical ports of the LAG members;
the second rate configuration module is further configured to set, in the HQoS model, a committed information rate=peak information rate=rate of LAG subinterface of the PW scheduling node, where a sum of committed information rates of all PW scheduling nodes is less than or equal to a PORT node bandwidth.
One of the above technical solutions has the following beneficial effects:
the FlexE model is replaced by the LAG main interface+subinterface model, the LAG main interface+subinterface model is replaced by the HQoS model, and the HQoS (Hierarchical Quality of Service, layered quality of service) model is set on at least one internal port of the device, and after the rate is set by the HQoS model, the traffic is forwarded from the internal port to the LAG member port via the corresponding LAG subinterface. The method can carry out adaptive networking on equipment which does not support the FlexE function and equipment which does not support FlexE small particles, and realizes the FlexE service scene.
And the LAG main interface and sub interface model is similar to the FlexE model, so that smooth upgrade of the equipment is facilitated. The service flow is forwarded through the HQoS model in a speed limiting way, so that the equipment has better compatibility and can support the QoS queue function.
Drawings
FIG. 1 is a schematic illustration of a FlexE model in an embodiment of the invention;
FIG. 2 is a schematic diagram of a LAG main interface+sub interface model according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an HQoS model according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a traffic forwarding model according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an HQoS model scheduling of an internal port according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The invention provides a method for realizing flexible Ethernet service scene by HQoS, which replaces a FlexE model by a LAG main interface and sub-interface model, wherein the rate of the LAG sub-interface is controlled to be equal to the sum of time slots of the FlexE Shim; replacing a LAG main interface and sub-interface model by an HQoS model, wherein the rate of a PW scheduling node is set to be the same as the rate of the LAG sub-interface; and establishing the HQoS model at least one internal port of the equipment, and transferring the service flow to the LAG member port from the internal port through the corresponding LAG sub-interface after the service flow is forwarded to the HQoS model and the rate is set. The method realizes the FlexE model function, and performs adaptive networking on equipment which does not support the FlexE function and equipment which does not support FlexE small particles, thereby realizing the FlexE service scene.
As shown in fig. 1, an embodiment of a FlexE model is provided. In this embodiment, it is assumed that PHY1 corresponds to interface flexe-100gi 0/1/0/1; PHY2 corresponds to interface flexe-100gi 0/1/0/2; PHY3 corresponds to interface flexe-100gi 0/1/0/3.FlexE Group corresponds to interface FlexE-Group 1,bind interface FlexE-100gi 0/1/0/1phy-num 1.
The controller FlexE-Client 1/1, where 1/1 represents FlexE Group1 and FlexE Client1, respectively.
Timeslot 1-2, corresponding to slots 1 and 2, one slot 5G, allocates a total of 10G bandwidth.
The controller FlexE-Client 1/2, where 1/2 represents FlexE Group1 and FlexE Client2, respectively.
Timeslot 3-4, time 3 and 4 are allocated, one slot 5G, and a total of 10G bandwidth is allocated.
The small grains are similar, except that the slot bandwidths are only around 10M each. Different physical ports can be bound together by the FlexE Group, then FlexE clients are configured according to service requirements, and the bandwidth is controlled by distributing time slots in the FlexE clients.
As shown in fig. 2, an embodiment of a LAG main interface + sub-interface model is provided. The above substitution of the FlexE model by the LAG main interface+sub interface model is accomplished at the configuration level, which may specifically include: the method comprises the steps of replacing a FlexE Group with a LAG main interface, replacing a FlexE Client with a LAG sub-interface, and controlling the rate of the LAG sub-interface to be equal to the sum of time slots of the FlexE Shim. Specifically, the LAG sub-interface is limited in speed, and the sum of the promised information rate (Committed Information Rate, CIR) of the LAG sub-interface and the peak information rate (Peak Information Rate, PIR) of the LAG sub-interface and the time slot (shaping) of the FlexE Shim is calculated; the sum of the time slots can be preset according to the requirement, and does not exceed the sum of the bandwidths of the physical ports of the LAG members.
The LAG main interface + sub-interface model is similar to the FlexE model, except that the FlexE model controls bandwidth through time slots, while the LAG sub-interface controls bandwidth through rate limiting.
As shown in FIG. 3, an embodiment of the HQoS model is provided, the QUEs in FIG. 3 are queues, the PW scheduling node contains 8 QUEs by default, the committed information rate and the peak information rate can be set, and of course, the PW scheduling node can also contain other numbers of QUEs, 4 QUEs are given as an example in FIG. 3. The LSP node is an upper layer scheduling node of the PW scheduling node, may include a plurality of PW scheduling nodes, and may set a committed information rate and a peak information rate. The PORT node is an upper node of the LSP node, may include a plurality of LSP nodes, and may perform the committed information rate and the peak information rate limit, but in this embodiment, the rate limit of the PORT node is not used.
Based on the above embodiment, the method replaces the LAG main interface+sub interface model by the HQoS model, specifically including:
simulating the LAG sub-interface by using the PW scheduling node, mapping an internal PORT of the equipment by using the PORT node, and setting the rate of the PW scheduling node to be the same as the rate of the LAG sub-interface, namely setting the promised information rate of the PW scheduling node = peak information rate = rate of the LAG sub-interface. And the sum of the promised information rates of all PW scheduling nodes is smaller than or equal to the PORT node bandwidth. The LAG sub-interface speed limiting function is realized by adapting to an HQoS model.
As shown in fig. 4, an embodiment of a traffic forwarding model is provided for implementing the above-described process of forwarding traffic to LAG member ports. In fig. 4, a dotted line represents a forwarding path in the related art, and a straight line represents a forwarding path in the present invention. Assuming that three physical interfaces are respectively in slots 1-3, three physical PHYs 1-3 are bound and shaped into a LAG sub-interface 1, each board card has the LAG sub-interface 1 with the same content, and the original business should be respectively sent out from the LAG sub-interfaces 1 of the board card, if the LAG sub-interface 1 is limited in speed by 100M, the total speed limit is 100M x 3, and the aim of limiting the speed by 100M of the sub-interfaces is not achieved, so that adjustment is needed, and the speed limit effect can be achieved after the traffic of which the outlet is the LAG sub-interface 1 is converged together.
In this embodiment, in order to set an internal loopback port (assumed to be a lock 1) of the device, the HQoS model is built on the lock 1, and the internal loopback port is used as an intermediate bridge between the HQoS model and the LAG subinterface to forward traffic. And establishing an HQoS model for the LAG sub-interface on the lookback1 for scheduling, wherein only PW scheduling nodes are actually used for limiting the speed, and the promised information rate=peak information rate corresponding to the PW scheduling nodes is set, so that the effect of limiting the speed of the LAG sub-interface 1 is achieved after the traffic passes through the HQoS model for limiting the speed. The business originally goes out of the LAG sub-interface 1 of the board card and is now changed into a slot1 of slot 1. And then the business flow is transferred to the LAG sub-interface 1 corresponding to the board card through the point-to-point (CCC) business by the cookie 1, and the business flow is transferred to each LAG member physical port through the LAG sub-interface 1 to be discharged. Thus, the speed limit of the LAG sub-interface 1 is achieved, and the original load sharing algorithm characteristic of the LAG is also reserved.
The LAG subinterface 1 is configured to limit speed and simulate a FlexE Client interface rigid pipeline, and bandwidth configuration is required to be ensured. Specifically, an internal port is selected in the device, and the HQoS model is built on the internal port.
It should be noted that, the internal ports and the LAG subinterfaces are in one-to-one correspondence, if the number of LAG subinterfaces is relatively large, the device needs more internal ports, i.e. multiple internal ports of the device are selected, and an HQoS model is built on each internal port. The LSP node of the HQoS model is not used for speed limiting, but may hang under the internal port by default as a forwarding node for traffic, and the PW scheduling node hangs on the default LSP node.
As shown in fig. 5, the service traffic is forwarded to the HQoS model, speed limiting processing is performed by the PW scheduling node, the speed-limited service traffic is forwarded to the internal port by the LSP node, then the internal port is forwarded to the LAG sub-interface 1 of the board card through point-to-point (CCC) service, and the LAG sub-interface 1 forwards the traffic to the LAG member physical port through the Hash algorithm. In this embodiment, the committed information rate=peak information rate=100deg.M (assuming that the limit of the LAG subinterface 1 is 100M) on the PW scheduling node, and the limit configuration is actually configured on the PW scheduling node of the HQoS model, and the LSP node and the PORT node of the HQoS model do not perform the limit processing.
The invention also provides an embodiment of a system for realizing flexible Ethernet service scene by HQoS, which can be used for realizing the method. The system comprises a LAG main interface and sub interface model, a first rate configuration module, an HQoS model, a second rate configuration module and a flow forwarding module.
Specifically, the LAG main interface and sub interface model is used for replacing a FlexE model;
the first rate configuration module is used for controlling the rate of the LAG sub-interface to be equal to the sum of time slots of the FlexE Client;
the HQoS model is used for replacing the LAG main interface and sub interface model;
the second rate configuration module is used for setting the same rate of PW scheduling nodes and the same rate of the LAG subinterfaces;
the flow forwarding module is used for selecting at least one internal port in the equipment, establishing the HQoS model, and forwarding the received service flow to the corresponding LAG sub-interface point to point after setting the rate through the PW scheduling node by the HQoS model, and then transmitting the service flow to the LAG member physical port.
Furthermore, in the above-mentioned LAG main interface+sub interface model, the LAG main interface is used to replace the FlexE Group, and the LAG sub interface is used to replace the FlexE Client.
The first rate configuration module is further configured to set, at a configuration level, a sum of a committed information rate of the LAG sub-interface=a peak information rate of the LAG sub-interface=a slot of the FlexE Client; and the sum of the time slots can be preset, and the sum of the bandwidths of the physical ports of the LAG members is required not to be exceeded.
And the HQoS model replaces the LAG main interface and sub-interface model, the PW scheduling node is used for simulating the LAG sub-interface, and the PORT node is used for mapping an internal PORT of the equipment.
The second rate configuration module is further configured to set, in the HQoS model, a committed information rate=peak information rate=rate of LAG subinterface of the PW scheduling node, where a sum of committed information rates of all PW scheduling nodes is less than or equal to a PORT node bandwidth.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof, but rather as providing for the use of additional embodiments and advantages of all such modifications, equivalents, improvements and similar to the present invention are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (8)
1. A method for implementing a flexible ethernet service scenario by using a qos, comprising:
replacing a FlexE model by using a LAG main interface and sub-interface model, and replacing a FlexE Group by using a LAG sub-interface and replacing a FlexE Client by using a LAG main interface in a configuration layer; wherein the rate of the LAG subinterface is controlled to be equal to the sum of the slots of the FlexE Shim;
replacing a LAG main interface and sub-interface model by an HQoS model, wherein the HQoS model comprises PW scheduling nodes, LSP nodes and PORT nodes, in the HQoS model, simulating the LAG sub-interface by using the PW scheduling nodes, and mapping an internal PORT of the equipment by using the PORT nodes, wherein the rate of setting the PW scheduling nodes is the same as the rate of the LAG sub-interface;
and establishing the HQoS model at least one internal port of the equipment, and transferring the service flow to the LAG member port from the internal port through the corresponding LAG sub-interface after the service flow is forwarded to the HQoS model and the rate is set.
2. The method for implementing a flexible ethernet service scenario according to claim 1, wherein the controlling the rate of the LAG subinterface to be equal to the sum of slots of FlexE Shim specifically comprises:
at the configuration level, limiting the speed of the LAG sub-interface, wherein the promised information rate of the LAG sub-interface=the peak information rate of the LAG sub-interface=the sum of time slots of the Flexe shims; and the sum of the time slots is preset and does not exceed the sum of the bandwidths of the physical ports of the LAG members.
3. The method for implementing a flexible ethernet traffic scenario of claim 2, wherein a sum of said LAG subinterface committed information rates is less than a LAG main interface bandwidth.
4. The method for implementing a flexible ethernet traffic scenario for HQoS according to claim 1, wherein said PW scheduling node comprises a plurality of queues, said LSP node comprises a plurality of PW scheduling nodes, and said PORT node comprises a plurality of LSP nodes;
the PW scheduling node and the LSP node may both set a committed information rate and a peak information rate.
5. The method for implementing a flexible ethernet service scenario according to claim 4, wherein the setting the rate of the PW scheduling node is the same as the rate of the LAG subinterface, specifically includes:
setting the promised information rate of PW dispatching nodes=peak information rate=rate of LAG subinterface, and the sum of promised information rates of all PW dispatching nodes is less than or equal to the PORT node bandwidth.
6. The method for implementing flexible ethernet service scenario according to claim 1, wherein said service traffic is forwarded to the HQoS model, and after speed limiting processing is performed by PW scheduling node, the traffic is forwarded from the internal port to the LAG sub-interface of the board card through point-to-point service, and the LAG sub-interface forwards the traffic to the LAG member physical port through Hash algorithm.
7. A system for implementing a flexible ethernet traffic scenario for a HQoS, comprising:
the LAG main interface and sub interface model is used for replacing a FlexE model; in the configuration level, replacing a FlexE Group by a LAG main interface and replacing a FlexE Client by a LAG sub-interface;
a first rate configuration module, configured to control a rate of the LAG subinterface to be equal to a sum of slots of the FlexE Shim;
the HQoS model is used for replacing the LAG main interface and sub interface model; the HQoS model comprises PW scheduling nodes, LSP nodes and PORT nodes, in the HQoS model, the PW scheduling nodes are used for simulating the LAG sub-interfaces, and the PORT nodes are used for mapping an internal PORT of the equipment;
the second rate configuration module is used for setting the same rate of PW scheduling nodes and the same rate of the LAG subinterfaces;
the flow forwarding module is used for selecting at least one internal port in the equipment, establishing the HQoS model, and forwarding the received service flow to the corresponding LAG sub-interface after setting the rate by the HQoS model, and then transmitting the service flow to the LAG member physical port.
8. The system for implementing a flexible ethernet traffic scenario for HQoS of claim 7, comprising:
the first rate configuration module is further configured to limit, at a configuration level, a sum of timeslots of a committed information rate of the LAG subinterface=a peak information rate of the LAG subinterface=flexe Shim; the sum of the time slots is preset and does not exceed the sum of the bandwidths of the physical ports of the LAG members;
the second rate configuration module is further configured to set, in the HQoS model, a committed information rate=peak information rate=rate of LAG subinterface of the PW scheduling node, where a sum of committed information rates of all PW scheduling nodes is less than or equal to a PORT node bandwidth.
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