CN106961399B - Method and system for distributing reserved bandwidth of tunnel exit port - Google Patents

Method and system for distributing reserved bandwidth of tunnel exit port Download PDF

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CN106961399B
CN106961399B CN201610013341.1A CN201610013341A CN106961399B CN 106961399 B CN106961399 B CN 106961399B CN 201610013341 A CN201610013341 A CN 201610013341A CN 106961399 B CN106961399 B CN 106961399B
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bandwidth
port
tunnel
physical
capacity
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CN106961399A (en
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李伟
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ZTE Corp
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ZTE Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/82Miscellaneous aspects
    • H04L47/825Involving tunnels, e.g. MPLS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/72Admission control; Resource allocation using reservation actions during connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/82Miscellaneous aspects
    • H04L47/821Prioritising resource allocation or reservation requests
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/70Admission control; Resource allocation
    • H04L47/82Miscellaneous aspects
    • H04L47/827Aggregation of resource allocation or reservation requests

Abstract

The invention provides a method and a system for distributing reserved bandwidth of a tunnel exit port. The distribution method comprises the following steps: in the network element capacity expansion process, determining all tunnel exit ports under a capacity expansion physical port, and calculating the basic bandwidth of each tunnel exit port, wherein the basic bandwidth comprises the tunnel bandwidth borne by each tunnel exit port; and calculating and distributing reserved bandwidth of the tunnel exit port according to the basic bandwidth of the tunnel exit port and the maximum physical bandwidth of the capacity expansion physical port, wherein the reserved bandwidth comprises the basic bandwidth. In the network element capacity expansion process, the reserved bandwidth of the tunnel output port is calculated and distributed according to the basic bandwidth of the tunnel output port and the maximum physical bandwidth of the capacity expansion physical port, so that QoS scheduling can be carried out according to services after capacity expansion, and operation and maintenance efficiency is guaranteed.

Description

Method and system for distributing reserved bandwidth of tunnel exit port
Technical Field
The present invention relates to the field of communications, and in particular, to a method and a system for allocating reserved bandwidth at an egress port of a tunnel.
Background
With the development of communication networks, the types of services carried by current bearer networks are numerous, including 2G, 3G, LTE, OLT, large client services, video conference, government and enterprise network services, and these services all consume a large amount of bandwidth, while the bandwidth resources of operators are limited. When the network service of the user is continuously increased and developed to a certain degree, the original equipment can not meet the requirement, at this time, the node adding operation is needed, and the original service is switched to the new node, namely, the capacity expansion is carried out. The current capacity expansion tool only supports adjusting the tunnel route of the related network element, and does not process the tunnel QoS (Quality of Service) and the port reserved bandwidth, so that the QoS scheduling cannot be performed according to the Service after capacity expansion, and the operation and maintenance efficiency is greatly influenced.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and a system for allocating reserved bandwidth at a tunnel egress port, so as to solve the problem that the tunnel QoS and the reserved bandwidth at the port are not processed in the current network element capacity expansion process.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for allocating a reserved bandwidth at an egress port of a tunnel, where the method includes:
in the network element capacity expansion process, determining all tunnel exit ports under a capacity expansion physical port, and calculating the basic bandwidth of each tunnel exit port, wherein the basic bandwidth comprises the tunnel bandwidth borne by each tunnel exit port;
and calculating and distributing reserved bandwidth of the tunnel exit port according to the basic bandwidth of the tunnel exit port and the maximum physical bandwidth of the capacity expansion physical port, wherein the reserved bandwidth comprises the basic bandwidth.
Wherein the step of calculating the basic bandwidth of each tunnel egress port includes:
judging whether the capacity expansion physical port exists in a protection ring network or not;
if so, acquiring the protection bandwidth borne by each tunnel exit port, and calculating the sum of the protection bandwidth borne by each tunnel exit port and the tunnel bandwidth borne by the tunnel exit port to obtain the basic bandwidth of the tunnel exit port;
otherwise, the tunnel bandwidth borne by each tunnel exit port is used as the basic bandwidth of the tunnel exit port.
The tunnel bandwidth borne by the tunnel egress port is the sum of the bandwidths occupied by the tunnels to which the tunnel egress port belongs.
Wherein the step of calculating and allocating the reserved bandwidth of the tunnel egress port comprises:
calculating the port bandwidth borne by the capacity-expansion physical port, wherein the port bandwidth is the sum of the basic bandwidths of all the tunnel output ports;
acquiring the maximum physical bandwidth of the capacity expansion physical port, and judging the port bandwidth and the maximum physical bandwidth;
when the maximum physical bandwidth is greater than or equal to the port bandwidth, calculating a bandwidth difference between the maximum physical bandwidth and the port bandwidth, and allocating the bandwidth difference to all the tunnel egress ports under the capacity-expansion physical port, where the bandwidth difference is obtained by subtracting the port bandwidth from the maximum physical bandwidth, and a reserved bandwidth of the tunnel egress port includes a basic bandwidth of the tunnel egress port and a divided bandwidth difference;
and when the maximum physical bandwidth is smaller than the port bandwidth, judging that the current expansion fails, and finishing the reserved bandwidth allocation.
Wherein the step of allocating the bandwidth difference to all the tunnel egress ports under the capacity expansion physical port includes:
and averagely distributing the bandwidth difference to all the tunnel output ports under the capacity expansion physical port.
When the first sub-port of the capacity expansion physical port is no longer used as the tunnel output port, the reserved bandwidth of the first sub-port is a bandwidth difference value obtained by the first sub-port, where the first sub-port is a port of at least one three-layer sub-port configured on the capacity expansion physical port in advance.
The embodiment of the present invention further provides a system for allocating reserved bandwidth at a tunnel egress port, where the system includes:
a calculation module, configured to determine all tunnel egress ports under a capacity expansion physical port in a capacity expansion process of a network element, and calculate a basic bandwidth of each tunnel egress port, where the basic bandwidth includes a tunnel bandwidth borne by each tunnel egress port;
and the calculation and distribution module is used for calculating and distributing the reserved bandwidth of the tunnel exit port according to the basic bandwidth of the tunnel exit port and the maximum physical bandwidth of the capacity expansion physical port, wherein the reserved bandwidth comprises the basic bandwidth.
Wherein the calculation module comprises:
the judging unit is used for judging whether the capacity expansion physical port exists in a protection ring network or not, if so, the first calculating unit is executed, and if not, the second calculating unit is executed;
the first calculating unit is used for acquiring the protection bandwidth borne by each tunnel exit port according to the triggering of the judging unit, and calculating the sum of the protection bandwidth borne by each tunnel exit port and the tunnel bandwidth borne by the tunnel exit port to obtain the basic bandwidth of the tunnel exit port;
and the second calculation unit is used for taking the tunnel bandwidth borne by each tunnel exit port as the basic bandwidth of the tunnel exit port according to the trigger of the judgment unit.
In the distribution system, the tunnel bandwidth borne by the tunnel egress port is the sum of the bandwidths occupied by the tunnels to which the tunnel egress port belongs.
Wherein the calculation and distribution module comprises:
a third calculating unit, configured to calculate a port bandwidth borne by the capacity-expansion physical port, where the port bandwidth is a sum of basic bandwidths of all the tunnel egress ports;
an obtaining and judging unit, configured to obtain a maximum physical bandwidth of the capacity expansion physical port, and judge sizes of the port bandwidth and the maximum physical bandwidth;
a calculating and allocating unit, configured to calculate a bandwidth difference between the maximum physical bandwidth and the port bandwidth when the maximum physical bandwidth is greater than or equal to the port bandwidth, and allocate the bandwidth difference to all the tunnel egress ports under the capacity-expansion physical port, where the bandwidth difference is a difference obtained by subtracting the port bandwidth from the maximum physical bandwidth, and a reserved bandwidth of the tunnel egress port includes a basic bandwidth of the tunnel egress port and an allocated bandwidth difference;
and the ending unit is used for judging the current capacity expansion failure when the maximum physical bandwidth is smaller than the port bandwidth, and ending the reserved bandwidth allocation.
Wherein the calculation and distribution unit comprises:
and a difference distribution subunit, configured to averagely distribute the bandwidth difference to all the tunnel output ports under the capacity expansion physical port.
In the allocation system, when a first sub-port of the capacity-extended physical port is no longer used as the tunnel egress port, a reserved bandwidth of the first sub-port is a bandwidth difference value to which the first sub-port is assigned, where the first sub-port is a port of at least one three-layer sub-port configured on the capacity-extended physical port in advance.
The technical scheme of the invention at least comprises the following beneficial effects:
according to the technical scheme, in the network element capacity expansion process, the reserved bandwidth of the tunnel output port is calculated and distributed according to the basic bandwidth of the tunnel output port and the maximum physical bandwidth of the capacity expansion physical port, so that QoS scheduling can be carried out according to services after capacity expansion, and operation and maintenance efficiency is guaranteed.
Drawings
Fig. 1 is a schematic flow chart illustrating a method for allocating reserved bandwidth at a tunnel egress port according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system for allocating reserved bandwidth at a tunnel egress port according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a capacity expansion environment according to an embodiment of the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a flowchart of a method for allocating reserved bandwidth at a tunnel egress port according to an embodiment of the present invention is schematically shown, and an embodiment of the present invention provides a method for allocating reserved bandwidth at a tunnel egress port, where the method includes:
step 101, in the network element capacity expansion process, determining all tunnel egress ports under the capacity expansion physical port, and calculating a basic bandwidth of each tunnel egress port, where the basic bandwidth includes a tunnel bandwidth borne by each tunnel egress port.
During the network element capacity expansion process, a tunnel is determined according to the expanded network element, the expanded network element and the optical fiber link between the expanded network element and the expanded network element, the label and the tunnel exit port are redistributed for the relevant tunnel, and the basic bandwidth of each tunnel exit port is calculated. The basic bandwidth of each tunnel exit port at least comprises the tunnel bandwidth required to be borne by each tunnel exit port.
Step 102, according to the basic bandwidth of the tunnel exit port and the maximum physical bandwidth of the capacity expansion physical port, calculating and allocating the reserved bandwidth of the tunnel exit port, wherein the reserved bandwidth comprises the basic bandwidth.
Here, the required reserved bandwidth of each tunnel egress port is calculated and allocated according to the basic bandwidth and the maximum physical bandwidth of the capacity expansion physical port. The maximum physical bandwidth refers to the maximum bandwidth value that the physical port can bear.
In this embodiment, the basic bandwidth of the tunnel output port is calculated, and the reserved bandwidth in the network element capacity expansion process is calculated according to the maximum physical bandwidth of the capacity expansion physical port and the basic bandwidth, so that the reserved bandwidth is guaranteed to at least include the basic bandwidth, and meanwhile, the QoS scheduling can be performed according to the service after the network element capacity expansion, and the operation and maintenance efficiency is guaranteed.
As a preferred implementation manner of the foregoing embodiment of the present invention, in step 101, the step of calculating the basic bandwidth of each tunnel egress port may include the following steps:
judging whether the capacity-expansion physical port exists in a protection ring network or not;
if so, acquiring the protection bandwidth borne by each tunnel exit port, and calculating the sum of the protection bandwidth borne by each tunnel exit port and the tunnel bandwidth borne by the tunnel exit port to obtain the basic bandwidth of the tunnel exit port;
otherwise, the tunnel bandwidth borne by each tunnel egress port is used as the basic bandwidth of the tunnel egress port.
In the above step, when it is determined that the capacity expansion port exists in the protection ring network, the protection bandwidth required by the tunnel egress port for protecting the ring network needs to be calculated and obtained, and then the basic bandwidth of each tunnel egress port is the sum of the protection bandwidth borne by the tunnel egress port and the tunnel bandwidth, that is, at each tunnel egress port, the basic bandwidth is equal to the protection bandwidth plus the tunnel bandwidth. When there is no protection ring network, for each tunnel egress port, the basic bandwidth is the tunnel bandwidth.
Further, for each tunnel egress port, the tunnel bandwidth borne by the tunnel egress port is the sum of the bandwidths occupied by the tunnels to which the tunnel egress port belongs.
As a preferred implementation manner of the foregoing embodiment of the present invention, in step 102, the step of calculating and allocating a reserved bandwidth of a tunnel egress port according to a basic bandwidth of the tunnel egress port and a maximum physical bandwidth of a capacity expansion physical port may include the following steps:
and calculating the port bandwidth borne by the capacity-expansion physical port, wherein the port bandwidth is the sum of the basic bandwidths of all the tunnel exit ports.
And acquiring the maximum physical bandwidth of the capacity expansion physical port, and judging the size of the port bandwidth and the maximum physical bandwidth.
In the two steps, the port bandwidth born by the capacity-expansion physical port is calculated according to the basic bandwidth, the port bandwidth is the sum of the basic bandwidths of all the tunnel ports under the capacity-expansion physical port, and the port bandwidth is compared with the maximum physical bandwidth of the capacity-expansion physical port to judge the sizes of the port bandwidth and the maximum physical bandwidth.
When the maximum physical bandwidth is greater than or equal to the port bandwidth, calculating a bandwidth difference between the maximum physical bandwidth and the port bandwidth, and allocating the bandwidth difference to all tunnel egress ports under the capacity-expansion physical port, wherein the bandwidth difference is obtained by subtracting the port bandwidth from the maximum physical bandwidth, and the reserved bandwidth of the tunnel egress port includes a basic bandwidth of the tunnel egress port and a divided bandwidth difference.
In the above step, when the maximum physical bandwidth is greater than the port bandwidth, a bandwidth difference value of "maximum physical bandwidth — port bandwidth" is calculated, and the bandwidth difference value is allocated to all tunnel output ports under the capacity-expansion physical port, generally, the bandwidth difference value is allocated to all tunnel output ports under the capacity-expansion physical port in an average allocation manner, and for each tunnel output port, the reserved bandwidth is equal to the basic bandwidth + the bandwidth difference value/N, where N is the number of all tunnel output ports under the capacity-expansion physical port. When the maximum physical bandwidth is equal to the port bandwidth, the bandwidth difference between the maximum physical bandwidth and the port bandwidth is 0, and at this time, for each tunnel egress port, the reserved bandwidth is equal to the basic bandwidth.
And when the maximum physical bandwidth is smaller than the port bandwidth, judging that the current expansion fails, and ending the reserved bandwidth allocation.
In the above steps, when the maximum physical bandwidth is smaller than the port bandwidth, at this time, the port bandwidth exceeds the set maximum range, the CAC (Connectivity access Control) check fails, the capacity expansion fails, and the reserved bandwidth allocation is finished.
In addition, in the reserved bandwidth allocation process, when the first sub-port of the capacity expansion physical port is no longer used as the tunnel output port, and the first sub-port is a port in at least one three-layer sub-port configured on the capacity expansion physical port in advance, the reserved bandwidth of the first sub-port is a bandwidth difference divided by the first sub-port, that is, the reserved bandwidth of the sub-port is equal to the bandwidth difference divided by the sub-port.
In a specific embodiment of the present invention, as shown in fig. 3, a network element C is added between a network element a and a network element B, so that the network element C is interconnected with the network element a and the network element B, respectively. Generating corresponding three-layer sub-ports for the capacity expansion physical ports interconnected between the expansion Network element C and the expanded Network elements A and B according to the information of the three-layer sub-ports of the physical ports interconnected between the expanded Network elements A and B, VLAN (Virtual Local Area Network), IP Network segment information and the like before capacity expansion, and outputting the interconnection relation of the three-layer sub-ports of capacity expansion in a cache, reallocating a tunnel output port and an output tag, and generating a tunnel P node which is communicated with tunnels in the capacity expansion physical ports of the Network elements A and B for the capacity expansion physical port of the Network element C; acquiring tunnel bandwidth borne by each tunnel egress port under the inter-connected expanded physical ports of the network element A, B, C. At this time, whether the capacity expansion physical port exists in the protection ring network is judged, and if yes, a ring network protection group of the capacity expansion physical port interconnected with the network elements A and B through the network element C is established. Acquiring the protection bandwidth of each tunnel exit port under the capacity-expanded physical port, wherein the basic bandwidth of the tunnel exit port is equal to the sum of the protection bandwidth and the tunnel bandwidth borne by the tunnel exit port; otherwise, the basic bandwidth of the tunnel exit port is equal to the tunnel bandwidth borne by the tunnel exit port.
The maximum physical bandwidth of the interconnected expansion physical ports of the network element A, B, C is obtained, the sum of the basic bandwidths of all the tunnel exit ports under each expansion physical port is calculated to obtain the bandwidth of each port, and the maximum physical bandwidth of each expansion physical port and the port bandwidth are compared. Here, after the network element is expanded, QoS scheduling can be performed according to services, and it is necessary to ensure that an expanded port meets CAC requirements, so that when the maximum physical bandwidth is less than the port bandwidth, expansion fails, a process is interrupted, and allocation is exited; when the maximum physical bandwidth is greater than or equal to the port bandwidth, calculating a bandwidth difference between the maximum physical bandwidth and the port bandwidth, and averagely allocating the bandwidth difference to all tunnel output ports under the capacity-expanded physical port, so as to obtain a reserved bandwidth of each tunnel output port, which is the basic bandwidth plus the bandwidth difference/N, where N is the number of all tunnel output ports under the capacity-expanded physical port.
The tunnel output port of the network element A, B may be changed after capacity expansion, and here, only the reserved bandwidth of the tunnel output port after capacity expansion is guaranteed to meet the service requirement, and for the original tunnel output port that is no longer used, only the bandwidth difference (bandwidth difference/N) obtained by averaging is allocated as the reserved bandwidth of the original tunnel output port.
To implement the method embodiment of the present invention, as shown in fig. 2, an embodiment of the present invention further provides an allocation system for reserved bandwidth at a tunnel egress port, where the allocation system includes:
a calculating module 21, configured to determine all tunnel egress ports under a capacity expansion physical port in a capacity expansion process of a network element, and calculate a basic bandwidth of each tunnel egress port, where the basic bandwidth includes a tunnel bandwidth borne by each tunnel egress port;
a calculating and allocating module 22, configured to calculate and allocate a reserved bandwidth of the tunnel egress port according to a basic bandwidth of the tunnel egress port and a maximum physical bandwidth of the capacity-expansion physical port, where the reserved bandwidth includes the basic bandwidth.
Wherein the calculation module comprises:
the judging unit is used for judging whether the capacity expansion physical port exists in a protection ring network or not, if so, the first calculating unit is executed, and if not, the second calculating unit is executed;
the first calculating unit is used for acquiring the protection bandwidth borne by each tunnel exit port according to the triggering of the judging unit, and calculating the sum of the protection bandwidth borne by each tunnel exit port and the tunnel bandwidth borne by the tunnel exit port to obtain the basic bandwidth of the tunnel exit port;
and the second calculation unit is used for taking the tunnel bandwidth borne by each tunnel exit port as the basic bandwidth of the tunnel exit port according to the trigger of the judgment unit.
In the distribution system, the tunnel bandwidth borne by the tunnel egress port is the sum of the bandwidths occupied by the tunnels to which the tunnel egress port belongs.
Wherein the calculation and distribution module comprises:
a third calculating unit, configured to calculate a port bandwidth borne by the capacity-expansion physical port, where the port bandwidth is a sum of basic bandwidths of all the tunnel egress ports;
an obtaining and judging unit, configured to obtain a maximum physical bandwidth of the capacity expansion physical port, and judge sizes of the port bandwidth and the maximum physical bandwidth;
a calculating and allocating unit, configured to calculate a bandwidth difference between the maximum physical bandwidth and the port bandwidth when the maximum physical bandwidth is greater than or equal to the port bandwidth, and allocate the bandwidth difference to all the tunnel egress ports under the capacity-expansion physical port, where the bandwidth difference is a difference obtained by subtracting the port bandwidth from the maximum physical bandwidth, and a reserved bandwidth of the tunnel egress port includes a basic bandwidth of the tunnel egress port and an allocated bandwidth difference;
and the ending unit is used for judging the current capacity expansion failure when the maximum physical bandwidth is smaller than the port bandwidth, and ending the reserved bandwidth allocation.
Wherein the calculation and distribution unit comprises:
and a difference distribution subunit, configured to averagely distribute the bandwidth difference to all the tunnel output ports under the capacity expansion physical port.
In the allocation system, when a first sub-port of the capacity-extended physical port is no longer used as the tunnel egress port, a reserved bandwidth of the first sub-port is a bandwidth difference value to which the first sub-port is assigned, where the first sub-port is a port of at least one three-layer sub-port configured on the capacity-extended physical port in advance.
In the above embodiment of the present invention, in the capacity expansion process of the network element, the reserved bandwidth of the tunnel output port is calculated and allocated according to the basic bandwidth of the tunnel output port and the maximum physical bandwidth of the capacity expansion physical port, so as to ensure that QoS scheduling can be performed according to the service after capacity expansion, and ensure operation and maintenance efficiency.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (12)

1. A method for allocating reserved bandwidth at an egress port of a tunnel, the method comprising:
in the network element capacity expansion process, determining all tunnel exit ports under a capacity expansion physical port, and calculating the basic bandwidth of each tunnel exit port, wherein the basic bandwidth comprises the tunnel bandwidth borne by each tunnel exit port;
calculating the port bandwidth borne by the capacity-expansion physical port, wherein the port bandwidth is the sum of the basic bandwidths of all the tunnel output ports;
and calculating a bandwidth difference value between the maximum physical bandwidth of the capacity expansion physical port and the port bandwidth, and allocating the bandwidth difference value to all the tunnel output ports under the capacity expansion physical port, wherein the bandwidth difference value is a difference value obtained by subtracting the port bandwidth from the maximum physical bandwidth.
2. The allocation method according to claim 1, wherein said step of calculating a base bandwidth for each of said tunneled egress ports comprises:
judging whether the capacity expansion physical port exists in a protection ring network or not;
if so, acquiring the protection bandwidth borne by each tunnel exit port, and calculating the sum of the protection bandwidth borne by each tunnel exit port and the tunnel bandwidth borne by the tunnel exit port to obtain the basic bandwidth of the tunnel exit port;
otherwise, the tunnel bandwidth borne by each tunnel exit port is used as the basic bandwidth of the tunnel exit port.
3. The allocation method according to claim 2,
the tunnel bandwidth borne by the tunnel exit port is the sum of the bandwidths occupied by the tunnels to which the tunnel exit port belongs.
4. The allocation method according to any one of claims 1 to 3, wherein the step of calculating a bandwidth difference between a maximum physical bandwidth of the capacity-expansion physical port and the port bandwidth, and allocating the bandwidth difference to all the tunnel egress ports under the capacity-expansion physical port comprises:
acquiring the maximum physical bandwidth of the capacity expansion physical port, and judging the port bandwidth and the maximum physical bandwidth;
when the maximum physical bandwidth is greater than or equal to the port bandwidth, calculating a bandwidth difference between the maximum physical bandwidth and the port bandwidth, and allocating the bandwidth difference to all the tunnel output ports under the capacity-expansion physical port;
and when the maximum physical bandwidth is smaller than the port bandwidth, judging that the current expansion fails, and finishing the reserved bandwidth allocation.
5. The allocation method according to claim 4, wherein the step of allocating the bandwidth difference to all the tunnel egress ports under the capacity-expanded physical port comprises:
and averagely distributing the bandwidth difference to all the tunnel output ports under the capacity expansion physical port.
6. The allocation method according to claim 4, wherein when a first sub-port of the capacity-expansion physical port is no longer used as the tunnel egress port, the reserved bandwidth of the first sub-port is a bandwidth difference to which the first sub-port is divided, where the first sub-port is a port of at least one three-layer sub-port configured on the capacity-expansion physical port in advance.
7. A system for allocating reserved bandwidth at an egress port of a tunnel, the system comprising:
a calculation module, configured to determine all tunnel egress ports under a capacity expansion physical port in a capacity expansion process of a network element, and calculate a basic bandwidth of each tunnel egress port, where the basic bandwidth includes a tunnel bandwidth borne by each tunnel egress port;
a calculation and distribution module, configured to calculate a port bandwidth borne by the capacity-expansion physical port, where the port bandwidth is a sum of basic bandwidths of all the tunnel egress ports; and calculating a bandwidth difference value between the maximum physical bandwidth of the capacity expansion physical port and the port bandwidth, and allocating the bandwidth difference value to all the tunnel output ports under the capacity expansion physical port, wherein the bandwidth difference value is a difference value obtained by subtracting the port bandwidth from the maximum physical bandwidth.
8. The dispensing system of claim 7, wherein the computing module comprises:
the judging unit is used for judging whether the capacity expansion physical port exists in a protection ring network or not, if so, the first calculating unit is executed, and if not, the second calculating unit is executed;
the first calculating unit is used for acquiring the protection bandwidth borne by each tunnel exit port according to the triggering of the judging unit, and calculating the sum of the protection bandwidth borne by each tunnel exit port and the tunnel bandwidth borne by the tunnel exit port to obtain the basic bandwidth of the tunnel exit port;
and the second calculation unit is used for taking the tunnel bandwidth borne by each tunnel exit port as the basic bandwidth of the tunnel exit port according to the trigger of the judgment unit.
9. The dispensing system of claim 8,
the tunnel bandwidth borne by the tunnel exit port is the sum of the bandwidths occupied by the tunnels to which the tunnel exit port belongs.
10. The distribution system according to any one of claims 7 to 9, wherein said calculation and distribution module comprises:
an obtaining and judging unit, configured to obtain a maximum physical bandwidth of the capacity expansion physical port, and judge sizes of the port bandwidth and the maximum physical bandwidth;
a calculating and allocating unit, configured to calculate a bandwidth difference between the maximum physical bandwidth and the port bandwidth when the maximum physical bandwidth is greater than or equal to the port bandwidth, and allocate the bandwidth difference to all the tunnel egress ports under the capacity-expansion physical port;
and the ending unit is used for judging the current capacity expansion failure when the maximum physical bandwidth is smaller than the port bandwidth, and ending the reserved bandwidth allocation.
11. The distribution system according to claim 10, wherein said calculation and distribution unit comprises:
and a difference distribution subunit, configured to averagely distribute the bandwidth difference to all the tunnel output ports under the capacity expansion physical port.
12. The distribution system according to claim 10, wherein when a first sub-port of the capacity-expansion physical port is no longer used as the tunnel egress port, the reserved bandwidth of the first sub-port is a bandwidth difference into which the first sub-port is divided, wherein the first sub-port is a port of at least one three-layer sub-port configured on the capacity-expansion physical port in advance.
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