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OSN 500 550 580 V100R008C50 Commissioning and Configuration Guide 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Parameter Description: ATM Services

Parameter Description: ATM Services

This topic describes the parameters related to ATM services.

Service Class Mapping Table

This topic describes the parameters for a service class mapping table of ATM services.

Table 3-382  Parameters for a service class mapping table
Parameter Value Range Description
Mapping Relation ID

2-8

Default value: 2

Displays or specifies the ID of a mapping table.

Mapping Relation Name

-

Displays or specifies the name of a mapping table.

UBR

BE, AF11, AF12, AF13, AF21, AF22, AF23, AF31, AF32, AF33, AF41, AF42, AF43, EF, CS6, CS7

Default value: BE

Displays or specifies the service class of UBR.
  • Eight PHB service classes are available: BE, AF1, AF2, AF3, AF4, EF, CS6, and CS7. The OptiX OSN equipment provides different QoS policies for the queues of different service classes.
  • CS6-CS7: indicate the highest service classes, mainly for signaling transmission.
  • EF: indicates expedited forwarding, applicable to services of a low transmission delay and low packet loss ratio, such as voice and video services.
  • AF1-AF4: indicate assured forwarding, applicable to services that require an assured rate but no delay or jitter limit.
  • BE: indicates that the traffic is forwarded in best-effort manner without special processing.
    NOTE:
    The AF1 class includes three subclasses: AF11, AF12, and AF13. Only one of these subclasses can take effect for one queue. It is the same case with AF2, AF3, and AF4. Each AF class has three different discarding priorities (indicated by different colors). For AF1,
    • AF11: green. Traffic of a green priority can pass.
    • AF12: yellow. Traffic of a yellow priority is discarded as required when congestion occurs.
    • AF13: red. Traffic of a red priority is discarded first.
CBR

BE, AF11, AF12, AF13, AF21, AF22, AF23, AF31, AF32, AF33, AF41, AF42, AF43, EF, CS6, CS7

Default value: EF

Displays or specifies the service class of CBR.

RT-VBR

BE, AF11, AF12, AF13, AF21, AF22, AF23, AF31, AF32, AF33, AF41, AF42, AF43, EF, CS6, CS7

Default value: AF31

Displays or specifies the service class of RT-VBR.

NRT-VBR

BE, AF11, AF12, AF13, AF21, AF22, AF23, AF31, AF32, AF33, AF41, AF42, AF43, EF, CS6, CS7

Default value: AF21

Displays or specifies the service class of NRT-VBR.

UBR+

BE, AF11, AF12, AF13, AF21, AF22, AF23, AF31, AF32, AF33, AF41, AF42, AF43, EF, CS6, CS7

Default value: AF11

Displays or specifies the service class of UBR+.

PORT-RRANS

BE, AF11, AF12, AF13, AF21, AF22, AF23, AF31, AF32, AF33, AF41, AF42, AF43, EF, CS6, CS7

Default value: BE

Displays or specifies the service class of PORT-RRANS.

Policy Management

This topic describes the parameters for policy management of ATM services.

Table 3-383  Parameters for policy management
Parameter Value Range Description
Policy ID Example: 1

Specifies the policy ID of the ATM service. The policy ID can also be automatically allocated.

Policy Name

Synchronous signal, Signaling, Voice, Data, Video

Default value: Synchronous signal

Specifies the policy name of the ATM service. The maximum length of the value is 64 bytes.

NOTE:
You can select one of the five ATM service policy names from the drop-down list or enter the policy name.
Service Type

UBR, CBR, RT-VBR, NRT-VBR, UBR+

Default value: UBR

Specifies the type of the ATM service.

  • The UBR service is characterized by non-real-time applications and many bursts. The UBR service does not specify traffic-related service guarantees. To be specific, the UBR service only requires that the network side provides the service with the best effort. The network side does not provide any assured QoS for the UBR service. In the case of network congestion, the UBR cells are discarded first.
  • The CBR service requires tightly constrained delay variation and requires that data be transmitted at a constant rate. In addition, the CBR service requests a static amount of bandwidth and the highest priority. The CBR service is characterized by stable traffic and few bursts.
  • The rt-VBR service requires tightly constrained delay and delay variation. Compared with the CBR service, the rt-VBR service allows sources to transmit data at a rate that varies with time. Equivalently, the sources can be described as bursty. In addition, the rt-VBR service does not require a static amount of bandwidth.
  • Compared with the rt-VBR service, the nrt-VBR service does not require tightly constrained delay or delay variation, and is intended for non-real-time applications.
  • The UBR+ service is supplementary to the UBR service and is intended for applications that require assured minimum cell rate, which is indicated by the minimum cell rate (MCR) parameter. The other characteristics of the UBR+ service are the same as the corresponding characteristics of the UBR service.
Traffic Type

-

For the mapping relationships between ATM service types, ATM traffic type descriptors, and traffic parameters, see Table 3-384. ATM policies are configured based on these mapping relationships.

Clp01Pcr(cell/s)

90 to 74539

Clp01Scr(cell/s)

90 to 74539

Clp0Pcr(cell/s)

90 to 74539

Clp0Scr(cell/s)

90 to 74539

Max. Cell Burst Size (cell)

2 to 200000

Cell Delay Variation Tolerance (0.1us)

7 to 13300000

Discard Traffic Frame

Enabled, Disabled

Default value: Disabled

Specifies the frame discarding mark in ATM policies. This parameter is effective to AAL5 traffic.
UPC/NPC

Enabled, Disabled

Default value: Disabled

  • UPC is user-side parameter control and NPC is network-side parameter control.
  • After UPC/NPC is enabled, the cells with a frame discarding mark will be discarded in network congestion.
Table 3-384  Mapping relationship between ATM service types, ATM traffic types, and traffic parameters
ATM Service Type ATM Traffic Type Descriptor Traffic Parameter 1 Traffic Parameter 2 Traffic Parameter 3 Traffic Parameter 4
UBR NoTrafficDescriptor - - - -
NoClpTaggingNoScr Clp01Pcr CDVT - -
NoClpNoScr Clp01Pcr - - -
NoClpNoScrCdvt Clp01Pcr CDVT - -
CBR ClpTransparentNoScr Clp01Pcr CDVT - -
ClpNoTaggingNoScr Clp01Pcr Clp0Pcr - -
ClpTaggingNoScr Clp01Pcr Clp0Pcr - -
NoClpNoScr Clp01Pcr - - -
NoClpNoScrCdvt Clp01Pcr CDVT - -
nrtVBR NoClpScr Clp01Pcr Clp01Scr MBS -
ClpNoTaggingScr Clp01Pcr Clp0Scr MBS -
ClpTaggingScr Clp01Pcr Clp0Scr MBS -
rtVBR ClpTransparentScr Clp01Pcr Clp01Scr MBS CDVT
NoClpScrCdvt Clp01Pcr Clp01Scr MBS CDVT
ClpNoTaggingScrCdvt Clp01Pcr Clp0Scr MBS CDVT
ClpTaggingScrCdvt Clp01Pcr Clp0Scr MBS CDVT
UBR+ atmnotrafficdescriptormcr Clp01Mcr - - -
atmnoclpmcr Clp01Pcr Clp01Mcr - -
atmnoclpmcrcdvt Clp01Pcr Clp01Mcr CDVT -

Service Management

This topic describes the parameters for the main interface, connection, port attributes, PW, and CoS mapping of ATM services.

Table 3-385  Main interface parameters
Field Value Range Description
Service ID

1 to 4294967295

Specifies the service ID.

If Auto-Assign is selected, the system automatically allocates service IDs.

Service Name

-

Specifies the service name.

Service Type

UNIs-NNI, UNI-UNI

Default value: UNIs-NNI

Specifies the type of the ATM service.

  • UNIs-NNI: This value applies to ATM PWE3 services. The attributes in Connection, PW, and CoS Mapping need to be configured.
  • UNI-UNI: This value applies to common ATM services. Only the attributes in Connection need to be configured.
Connection Type

PVC, PVP

Default value:
  • UNIs-NNI: PVC
  • UNI-UNI: PVC

Specifies the connection type of the ATM service.

For common ATM services (UNI-UNI):

  • PVP: Only the VPIs of the source and sink are exchanged.
  • PVC: The VPIs and VCIs of the source and sink are exchanged.

For ATM PWE3 services (UNIs-NNI):

  • PVP: This value applies to the N-to-1/1-to-1 VPC encapsulation mode. It is recommended that you set the VPIs to the same value on the two ends of the ATM connection.
  • PVC: This value applies to the N-to-1/1-to-1 VCC encapsulation mode. It is recommended that you set the VPIs/VCIs to the same value on the two ends of the ATM connection.
Protection Type

No Protection, PW APS

Default value: No Protection

Specifies the protection mode of the PW.

  • Specifies the protection mode of the PW. This parameter is available only when Service Type is UNIs-NNI.
  • Set this parameter according to the planning information.
Auto-Assign

Selected, Not selected

Default value: Not selected

Specifies whether to automatically allocate service IDs.

Table 3-386  Connection parameters
Field Value Range Description
Connection Name

-

Specifies the name of the ATM connection.

Source Board

-

Specifies the source board of the ATM service.

Source Port

-

Specifies the source port of the ATM service.

Source VPI(eg.35,36-39)

UNI: 0 to 255, NNI: 0 to 4095

Specifies the VPI of the source port of the ATM service.

Source VCI(eg.35,36-39)

32 to 4095

Specifies the VCI of the source port of the ATM service.

PW ID

1 to 4294967295

Specifies the ID of the PW that carries services.

Sink Board

-

Specifies the sink board of the ATM service.

NOTE:
This parameter does not need to be set if Service Type is UNIs-NNI. This parameter needs to be set if Service Type is UNI-UNI and the value must be different from that of the source board.
Sink Port

-

Specifies the sink board of the ATM service.

NOTE:
This parameter does not need to be set if Service Type is UNIs-NNI. This parameter needs to be set if Service Type is UNI-UNI and the value must be different from that of the source port.
Sink VPI(eg.35,36-39)

1 to 4095

Specifies the VPI of the sink port of the ATM service.

Sink VCI(eg.35,36-39)

1 to 4095

Specifies the VCI of the sink port of the ATM service.

Uplink Policy

-

Specifies the QoS policy of the uplink ATM connection.

Down link Policy

-

Specifies the QoS policy of the downlink ATM connection.

Table 3-387  PW parameters
Field Value Range Description
PW ID -

Specifies the ID of the PW that carries services.

Working Status - Displays the working status of the PW.
NOTE:
This parameter is available only after the PW parameters are configured.
Enable Status - Displays the enabling status of the PW.
NOTE:
This parameter is available only after the PW parameters are configured.
PW Signaling Type

Static

Labels for static PWs need to be manually assigned.

PW Type

The ATM connection type is PVC:

  • ATM n to one VCC cell transport
  • ATM one-to-one VCC Cell Mode

The ATM connection type is PVP:

  • ATM n to one VPC cell transport
  • ATM one-to-one VPC Cell Mode

Specifies the type of the PW.

  • In the case of ATM 1_to_1 encapsulation, one PW carries one VPC or VCC.
  • In the case of ATM n_to_1 encapsulation, one PW carries one or more VPCs or VCCs.
Direction

Bidirectional

Displays the direction of the PW.

PW Encapsulation Type

MPLS

Displays the encapsulation type of the packets on the PW.

PW Ingress Label / Source Port

16 to 1048575

Specifies the PW Ingress label.

PW Egress Label / Sink Port

16 to 1048575

Specifies the PW Egress label.

Tunnel Selection Mode Manually

Displays the method to select tunnels.

Tunnel Type

MPLS

Displays the type of the tunnel that carries the PW.

Tunnel -

A tunnel needs to be selected. If no tunnel is available, creation of a PW will fail.

Opposite LSR ID -

Specifies the LSR ID of the PW at the remote end. If an existing tunnel is selected, the LSR ID will be automatically assigned.

Table 3-388  QoS parameters
Field Value Range Description
Bandwidth Limit

Enable, Disable

Default value: Disable

Specifies whether the bandwidth limit is enabled.

  • This function can be used to limit the bandwidth of one or more PWs, or the bandwidth of one or more ATM PWE3 services, in an MPLS tunnel. (One ATM PWE3 service corresponds to one PW.)
  • An ATM PWE3 service corresponds to a PW. Therefore, this function can also limit the bandwidth of ATM PWE3 services in an MPLS tunnel.
Policy

-

The OptiX OSN equipment does not support this parameter.

CIR (Kbit/s)

-

Specifies the committed information rate (CIR) of the PW.

It is recommended that you set this parameter to the same value as PIR.

CBS (kbyte)

-

Specifies the excess burst size of the PW.

It is recommended that you set this parameter to 0.

PIR (kbit/s)

-

Specifies the peak information rate (PIR) of the PW.

It is recommended that you set this parameter to the same value as CIR.

PBS (kbyte) -

Specifies the maximum excess burst size of the PW.

It is recommended that you set this parameter to 0.

Table 3-389  Parameters of Advanced Attributes
Field Value Range Description
Control Word

Use required, Not in use

Default value: Use required

NOTE:

In ATM ONE-to-ONE mode, Control Word must be set to Use required.

Specifies whether to use the control word. In the MPLS packet switching network, the control word is used to transmit packet information.

Association with other parameters:
  • If Control Word of the PW is Not in use, do not set Control Channel Type of the VCCV to CW; if Control Channel Type of the VCCV is CW, do not modify Control Word of the PW to Not in use.
  • Before changing the parameter value of a PW, you need to ensure that the PW is not bound with the service. After the change, you need to bind the PW with the service, and then check whether the parameter value is changed.
Control Channel Type

CW, None, Alert Label

Default value: CW

  • Specifies the mode of PW connectivity check.
  • The value None indicates that the control word is not supported. That is, the PW connectivity check is not supported.
  • The value CW indicates that the control word is supported.
  • The value Alert Label indicates VCCV packets in Alert Label encapsulation mode.
Association with other parameters:
  • If Control Word of the PW is Not in use, do not set Control Channel Type of the VCCV to CW; if Control Channel Type of the VCCV is CW, do not modify Control Word of the PW to Not in use.
  • Before changing the parameter value of a PW, you need to ensure that the PW is not bound with the service. After the change, you need to bind the PW with the service, and then check whether the parameter value is changed.
VCCV Verification Mode

Ping, None

Default value: Ping

  • Specifies the VCCV verification mode. The VCCV verification is used for PW connectivity check.
  • If the VCCV-Ping test is required, set this parameter to Ping.
Max. Concatenated Cell Count

1-31

Default value: 10

  • Specifies the maximum number of concatenated cells.
  • If the value 1 is assumed, only one ATM cell is encapsulated in one packet. If the value from 2 to 31 is assumed, a maximum of 2 to 31 ATM cells are encapsulated into one packet.
Packet Loading Time (us)

100-50000

Default value: 1000

  • Specifies the packet loading time. Once the packet loading time expires, the packet is sent out even if the concatenated cells are less than the maximum.
  • If Max. Concatenated Cell Count assumes the value 1, this parameter is ineffective. That is, the packet will be sent out once the cell is loaded.
Translation
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Updated: 2019-01-21

Document ID: EDOC1100020976

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