CN113746675A - Method and system for realizing flexible Ethernet service scene by using HQoS (high quality QoS) - Google Patents
Method and system for realizing flexible Ethernet service scene by using HQoS (high quality QoS) Download PDFInfo
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Abstract
A method and a system for realizing flexible Ethernet service scene by HQoS relate to the field of flexible Ethernet, and the method comprises the following steps: replacing the Flexe model with a LAG main interface + subinterface model, wherein the rate of the LAG subinterface is controlled to be equal to the sum of the time slots of the Flexe Shim; replacing an LAG main interface and a sub-interface model by an HQoS model, wherein the set PW scheduling node rate is the same as the LAG sub-interface rate; and establishing the HQoS model at least one internal port of the equipment, and after forwarding the service flow to the HQoS model to set the rate, switching the internal port to an LAG member port through a corresponding LAG sub-interface. The invention can be used for 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 a flexible Ethernet service scene by using HQoS (high quality QoS).
Background
FlexE (flexible ethernet) is an interface technology for a bearer network to implement service isolated bearers and network fragmentation.
The FlexE generic structure includes FlexE Group, FlexE Client, and FlexE Shim.
Flexe Client: an ethernet stream based on physical addresses.
Flexe Group: corresponding to a set of bound ethernet physical layers (PHYs).
FlexE Shim: the core of the whole FlexE can divide each 100GE PHY in the FlexE Group into 20 Slot (time Slot) data carrying channels, and the bandwidth corresponding to each Slot is 5 Gbps.
Ethernet frames in a FlexE Client raw data stream are sliced in units of Block atomic data blocks (64/66B encoded data blocks), which can be distributed among multiple PHYs and slots in a FlexE Group by FlexE Shim.
With the rapid development of FlexE technology, some older devices do not support FlexE functionality and smaller devices do not support FlexE small particles. In a large networking environment, the devices cannot adopt a Flexe model for networking to manage bandwidth, and how to perform adaptive networking on the devices which do not support a Flexe function and do not support small Flexe particles is a problem which needs to be solved urgently to realize a Flexe service scene.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a system for realizing a flexible Ethernet service scene by using HQoS (high quality QoS), which are used for carrying out adaptive networking on equipment which does not support a Flexe function and does not support Flexe small particles.
In order to achieve the above object, on one hand, a method for implementing a flexible ethernet service scenario by using an HQoS includes:
replacing the Flexe model with a LAG main interface + subinterface model, wherein the rate of the LAG subinterface is controlled to be equal to the sum of the time slots of the Flexe Shim;
replacing an LAG main interface and a sub-interface model by an HQoS model, wherein the set PW scheduling node rate is the same as the LAG sub-interface rate;
and establishing the HQoS model at least one internal port of the equipment, and after forwarding the service flow to the HQoS model to set the rate, switching the internal port to an LAG member port through a corresponding LAG sub-interface.
In some embodiments, replacing the FlexE model with the LAG master interface + subinterface model further includes:
in the configuration layer, a LAG main interface is used for replacing a Flexe Group, and a LAG sub interface is used for replacing a Flexe Client.
In some embodiments, the controlling the rate of the LAG subinterface to be equal to the sum of the time slots of the FlexE Shim specifically includes:
in a configuration layer, carrying out speed limitation on the LAG sub-interface, wherein the committed information rate of the LAG sub-interface is equal to the sum of the peak information rate of the LAG sub-interface and the time slot of Flexe Shim; and the sum of the time slots is preset and does not exceed the sum of the bandwidths of the LAG member physical ports.
In some embodiments, the sum of the LAG subinterface committed information rates is less than the LAG primary interface bandwidth.
In some embodiments, the HQoS model includes a PW scheduling node containing a plurality of queues, a LSP node including a plurality of PW scheduling nodes, and a PORT node including a plurality of LSP nodes;
the PW scheduling node and the LSP node can both set a committed information rate and a peak information rate.
In some embodiments, the replacing the LAG master interface + subinterface model by the HQoS model further includes:
in the HQoS model, a PW scheduling node is used for simulating the LAG subinterface, and a PORT node is used for mapping an internal PORT of the device.
In some embodiments, the setting of the rate of the PW scheduling node is the same as the rate of the LAG subinterface, which specifically includes:
and setting the committed information rate of the PW scheduling node as the peak information rate as the rate of the LAG subinterface, wherein the sum of the committed information rates of all the PW scheduling nodes is less than or equal to the bandwidth of the PORT node.
In some embodiments, the service traffic is forwarded to the HQoS model, after speed limiting processing is performed by a PW scheduling node, the traffic is forwarded from the internal port to the board LAG subinterface through a point-to-point service, and the LAG subinterface forwards the traffic to the LAG member physical port through a Hash algorithm.
On the other hand, the invention also provides a system for realizing the flexible Ethernet service scene by the HQoS, which comprises the following steps:
the LAG main interface + sub-interface model is used for replacing a Flexe model;
a first rate configuration module, configured to control the rate of the LAG subinterface to be equal to the sum of the time slots of the FlexE Shim;
the HQoS model is used for replacing the LAG main interface and the sub-interface model;
a second rate configuration module, configured to set a rate of a PW scheduling node to be the same as a rate of the LAG subinterface;
and 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 subinterface after the rate of the service flow is set by the HQoS model so as to transmit the service flow to the LAG member physical port.
In some embodiments, the method comprises:
the first rate configuration module is further configured to, in a configuration layer, limit a sum of a committed information rate of the LAG subinterface and a peak information rate of the LAG subinterface, which is a sum of time slots of the FlexE Shim; the sum of the time slots is preset and does not exceed the sum of the bandwidths of the LAG member physical ports;
the second rate configuration module is further configured to set, in the HQoS model, a committed information rate of the PW scheduling node, which is a peak information rate, which is a rate of the LAG sub-interface, and a sum of the committed information rates of all the PW scheduling nodes is less than or equal to a bandwidth of the PORT node.
One of the above technical solutions has the following beneficial effects:
the method comprises the steps that a Flexe model is replaced by an LAG main interface and sub-interface model, an HQoS model replaces the LAG main interface and sub-interface model, a Hierarchical Quality of Service (HQoS) model is arranged on at least one internal port of equipment, and after Service flow is forwarded to the HQoS model for setting the rate, the internal port is switched to an LAG member port through a corresponding LAG sub-interface. The adaptive networking can be carried out on equipment which does not support the Flexe function and equipment which does not support the Flexe small particles, and a Flexe service scene is realized.
Since the LAG main interface + sub-interface model is similar to the FlexE model, smooth upgrade of the device is facilitated later. The service flow is limited and forwarded through the HQoS model, so that the compatibility of the equipment is good, and the QoS queue function can be supported.
Drawings
FIG. 1 is a diagram of a Flexe model according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a LAG master interface + subinterface model according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an HQoS model in an embodiment of the 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 HQoS model scheduling of internal ports in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention provides a method for realizing a flexible Ethernet service scene by HQoS, which replaces a Flexe model by an LAG main interface + sub-interface model, wherein the speed of the LAG sub-interface is controlled to be equal to the sum of time slots of Flexe Shim; replacing an LAG main interface and a sub-interface model by an HQoS model, wherein the set PW scheduling node rate is the same as the LAG sub-interface rate; and establishing the HQoS model at least one internal port of the equipment, and after forwarding the service flow to the HQoS model to set the rate, switching the internal port to an LAG member port through a corresponding LAG sub-interface. The method realizes the function of the Flexe model, and performs adaptive networking on equipment which does not support the Flexe function and equipment which does not support small Flexe particles, thereby realizing a Flexe service scene.
As shown in fig. 1, an embodiment of the FlexE model is provided. In this embodiment, assume that PHY1 corresponds to interface flex-100 gi 0/1/0/1; PHY2 corresponds to interface flex-100 gi 0/1/0/2; PHY3 corresponds to interface flex-100 gi 0/1/0/3. The Flexe Group corresponds to interface flex-Group 1, and the bound interface flex-100 gi 0/1/0/1phy-num 1.
controller flex-Client 1/1, where 1/1 represents Flexe Group1 and Flexe Client1, respectively.
Timeslot 1-2, which is allocated slots 1 and 2, for slot 5G, for a total of 10G of bandwidth.
controller flex-Client 1/2, where 1/2 represents Flexe Group1 and Flexe Client2, respectively.
Timeslot 3-4, corresponding to time 3 and 4, is allocated one slot 5G, for a total of 10G of bandwidth.
The small particles are similar except that the slot bandwidths are only about 10M each. The Flexe Group can bind different physical ports together, then configure a Flexe Client according to business needs, and control bandwidth by allocating time slots in the Flexe Client.
As shown in fig. 2, an embodiment of the LAG master interface + subinterface model is provided. The replacing of the FlexE model by the LAG main interface + sub interface model is all completed in a configuration layer, and specifically may include: replacing the Flexe Group with a LAG master interface, replacing the Flexe Client with a LAG subinterface, and controlling the rate of the LAG subinterface to be equal to the sum of the time slots of the Flexe Shim. Specifically, the LAG subinterface is limited in speed, and the Committed Information Rate (CIR) of the LAG subinterface is the sum of Peak Information Rate (PIR) of the LAG subinterface and time slot (mapping) of the FlexE Shim; wherein, the sum of the time slots can be preset according to the requirement and does not exceed the sum of the bandwidths of the LAG member physical ports.
The LAG master + subinterface model is similar to the FlexE model, except that the FlexE model controls bandwidth by time slot, while the LAG subinterface controls bandwidth by rate limiting.
As shown in fig. 3, an HQoS model is provided, where QUE in fig. 3 is a queue, a PW scheduling node default includes 8 quess, and a committed information rate and a peak information rate may be set, although the PW scheduling node may include other numbers of QUEs, and 4 quess are given as an example in fig. 3. The LSP node is an upper-layer scheduling node of the PW scheduling node, and may include multiple 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 nodes, and may include a plurality of LSP nodes, and may also perform speed limitation on the committed information rate and the peak information, but in this embodiment, speed limitation of the PORT node is not used.
Based on the above embodiment, replacing the LAG main interface + sub-interface model with the HQoS model specifically includes:
and simulating the LAG subinterface by using a PW scheduling node, mapping an internal PORT of the device by using a PORT node, and setting the rate of the PW scheduling node to be the same as the rate of the LAG subinterface, namely setting the committed information rate of the PW scheduling node to be the peak information rate to be the rate of the LAG subinterface. The sum of the promised information rates of all PW scheduling nodes is less than or equal to the bandwidth of the PORT node. Therefore, the LAG sub-interface speed limit function is realized by adapting the 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, the dashed lines represent forwarding paths in the prior art, and the straight lines represent forwarding paths in the present invention. Assuming that three physical interfaces are respectively located at slots 1-3, three physical PHYs 1-3 are bound to form an LAG subinterface 1, each board has the LAG subinterface 1 with the same content, the original services should be respectively sent out from the LAG subinterface 1 of the board where the LAG subinterface is located, if the speed of the LAG subinterface 1 is limited by 100M, the total speed limit is 100M × 3, and the purpose of limiting the speed of the subinterface by 100M cannot be achieved, so that adjustment needs to be made, and the speed limiting effect can be achieved only after the traffic of the LAG subinterface 1 at the outlet is converged together for limiting the speed.
In this embodiment, an internal loopback port (assumed to be a loopback 1) of the device is set, the HQoS model is established on a loopback back1, and the internal loopback port is used as an intermediate bridge between the HQoS model and the LAG sub-interface to forward the flow. An HQoS model is established for the LAG sub-interface on the lookup back1 for scheduling, only a PW scheduling node is actually used for speed limiting, and the committed information rate corresponding to the PW scheduling node is set to be the peak information rate, so that the flow reaches the effect of speed limiting on the LAG sub-interface 1 after being limited by the HQoS model. The service originally goes out through the LAG subinterface 1 of the local board card, and is changed into the lookup back1 of slot 1. And then the service is transmitted to the LAG subinterface 1 corresponding to the board card through the point-to-point (CCC) service by the lookback1, and the service flow is transferred to each LAG member physical port through the LAG subinterface 1 to be output. Therefore, the LAG subinterface 1 speed limit is achieved, and the original load sharing algorithm characteristic of the LAG is also reserved.
The LAG sub-interface 1 configuration speed limit simulation is that a Flexe Client interface rigid pipeline needs to be configured with bandwidth guarantee. Specifically, an internal port is selected in the device, and the HQoS model is established on the internal port.
It should be noted that, the internal ports and the LAG subinterfaces correspond to each other one by one, and if the number of LAG subinterfaces is large, the device needs more internal ports, that is, multiple internal ports of the device are selected, and an HQoS model is established on each internal port. The LSP node of the HQoS model is not used for limiting speed, but is used as a forwarding node of flow, and can be hung under an internal port by default, and the PW scheduling node is hung on the default LSP node.
As shown in fig. 5, the service traffic is forwarded to the HQoS model, speed-limiting processing is performed through the PW scheduling node, the service traffic after speed-limiting processing is forwarded to the internal port through the LSP node, and then the internal port forwards the traffic to the LAG subinterface 1 of the board card through a point-to-point (CCC) service, and the LAG subinterface 1 forwards the traffic to the LAG member physical port through a Hash algorithm. In this embodiment, the committed information rate on the PW scheduling node is 100M (assuming that the LAG subinterface 1 speed limit is 100M), this speed limit configuration is actually configured on the PW scheduling node of the HQoS model, and the LSP node of the HQoS model and the PORT node do not perform speed limit processing.
The invention also provides an embodiment of a system for realizing the flexible Ethernet service scene by the HQoS, which can be used for realizing the method. The system comprises an LAG main interface + sub-interface model, a first rate configuration module, an HQoS model, a second rate configuration module and a flow forwarding module.
Specifically, the LAG master interface + sub-interface model is used to replace the FlexE model;
the first rate configuration module is used for controlling the rate of the LAG subinterface 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 the sub-interface model;
a second rate configuration module, configured to set a rate of a PW scheduling node to be the same as a rate of the LAG subinterface;
and 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 subinterface point to point after setting the speed through the PW scheduling node by the HQoS model so as to transmit the service flow to the LAG member physical port.
Furthermore, in the above LAG main interface + sub-interface model replacing the FlexE model, the LAG main interface replaces the FlexE Group, and the LAG sub-interface replaces the FlexE Client.
The first rate configuration module is further configured to set, in a configuration level, a committed information rate of the LAG sub-interface, which is a peak information rate of the LAG sub-interface, which is a sum of time slots of the FlexE Client; and the sum of the time slots can be preset, and the requirement is not more than the sum of the bandwidths of the physical ports of the LAG members.
In the HQoS model, an LAG main interface and sub-interface model is replaced, a PW scheduling node is used for simulating the LAG sub-interface, and a 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 of the PW scheduling node, which is a peak information rate, which is a rate of the LAG sub-interface, and a sum of the committed information rates of all the PW scheduling nodes is less than or equal to a bandwidth of the PORT node.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (10)
1. A method for realizing flexible Ethernet service scene by HQoS is characterized by comprising the following steps:
replacing the Flexe model with a LAG main interface + subinterface model, wherein the rate of the LAG subinterface is controlled to be equal to the sum of the time slots of the Flexe Shim;
replacing an LAG main interface and a sub-interface model by an HQoS model, wherein the set PW scheduling node rate is the same as the LAG sub-interface rate;
and establishing the HQoS model at least one internal port of the equipment, and after forwarding the service flow to the HQoS model to set the rate, switching the internal port to an LAG member port through a corresponding LAG sub-interface.
2. The HQoS method for implementing a flexible ethernet service scenario according to claim 1, wherein replacing a FlexE model with a LAG main interface + sub-interface model further comprises:
in the configuration layer, a LAG main interface is used for replacing a Flexe Group, and a LAG sub interface is used for replacing a Flexe Client.
3. The method for implementing a flexible ethernet service scenario by an HQoS according to claim 2, wherein the controlling the rate of the LAG subinterface to be equal to the sum of the time slots of the FlexE Shim specifically comprises:
in a configuration layer, carrying out speed limitation on the LAG sub-interface, wherein the committed information rate of the LAG sub-interface is equal to the sum of the peak information rate of the LAG sub-interface and the time slot of Flexe Shim; and the sum of the time slots is preset and does not exceed the sum of the bandwidths of the LAG member physical ports.
4. The HQoS method for implementing a flexible Ethernet service scenario according to claim 3, wherein a sum of committed information rates for the LAG subinterface is less than a LAG primary interface bandwidth.
5. The hQoS method for implementing a flexible Ethernet traffic scenario according to claim 1, wherein the hQoS model comprises 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 can both set a committed information rate and a peak information rate.
6. The HQoS method for implementing a flexible ethernet service scenario according to claim 5, wherein replacing the LAG main interface + sub-interface model with the HQoS model further comprises:
in the HQoS model, a PW scheduling node is used for simulating the LAG subinterface, and a PORT node is used for mapping an internal PORT of the device.
7. The method for implementing a flexible ethernet service scenario by an HQoS according to claim 5, wherein the setting of the PW scheduling node at the same rate as the LAG subinterface specifically includes:
and setting the committed information rate of the PW scheduling node as the peak information rate as the rate of the LAG subinterface, wherein the sum of the committed information rates of all the PW scheduling nodes is less than or equal to the bandwidth of the PORT node.
8. The HQoS method for implementing a flexible ethernet service scenario according to claim 1, wherein the service traffic is forwarded to the HQoS model, and after performing rate limiting processing via a PW scheduling node, the traffic is forwarded from the internal port to the LAG subinterface via a point-to-point service, and the LAG subinterface forwards the traffic to the LAG member physical port via a Hash algorithm.
9. A system for realizing flexible Ethernet service scene by HQoS is characterized by comprising:
the LAG main interface + sub-interface model is used for replacing a Flexe model;
a first rate configuration module, configured to control the rate of the LAG subinterface to be equal to the sum of the time slots of the FlexE Shim;
the HQoS model is used for replacing the LAG main interface and the sub-interface model;
a second rate configuration module, configured to set a rate of a PW scheduling node to be the same as a rate of the LAG subinterface;
and 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 subinterface after the rate of the service flow is set by the HQoS model so as to transmit the service flow to the LAG member physical port.
10. The system for HQoS to implement flexible ethernet service scenarios, according to claim 9, comprising:
the first rate configuration module is further configured to, in a configuration layer, limit a sum of a committed information rate of the LAG subinterface and a peak information rate of the LAG subinterface, which is a sum of time slots of the FlexE Shim; the sum of the time slots is preset and does not exceed the sum of the bandwidths of the LAG member physical ports;
the second rate configuration module is further configured to set, in the HQoS model, a committed information rate of the PW scheduling node, which is a peak information rate, which is a rate of the LAG sub-interface, and a sum of the committed information rates of all the PW scheduling nodes is less than or equal to a bandwidth of the PORT node.
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