QoS Management(OptiX RTN 380)

In this interface, you can configure QoS parameters related to the OptiX RTN 380 NE.

Navigation Path

In the NE Explorer, select an NE and choose Configuration > QoS Management.

Buttons

Button

Description

Traffic Classification Rules

Modify the classification rules of the traffic.

Colorize

Mark color for the selected traffic classification.

Parameters

Table 1 Diffserv Domain

Field

Value

Description

C-VLAN

0 to 7

Set the priority of the C-VLAN.

C-VLAN indicates the client-side VLAN. 7 indicates the highest priority.

S-VLAN

0 to 7

Set the priority of the S-VLAN.

S-VLAN indicates the service-side VLAN. 7 indicates the highest priority.

MPLS EXP

0 to 7

Set the priority of the MPLS EXP.

EXP indicates the three bits of the MPLS packets, and carries the Diffserv information in the MPLS.

IP DSCP

0 to 63

Set the priority of the IP DSCP.

The DSCP section is a part of the service type section of the IP header, and labels the priority on packets.

PHB

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

IETF defines 16 standard PHBs.

  • BE: Indicates the traffic that need not be processed exceptionally.
  • AF1-AF4: Indicates the guaranteed forwarding. The CoS is applicable to the service that requires a certain rate, but does not limit the delay or jitter.
  • EF: Indicates fast forwarding. The CoS is applicable to the service of little delay and packet loss rate, such as the audio and video services.
  • CS6-CS7: Indicates the highest service class. The CoS is applicable to transport of signaling.
Table 2 Port Policy, Port Shaping

Field

Value

Description

Port

slot number-board name-port number(port name)

Displays the port name.

QoS Binding Status

Bound, Unbound

Default: Bound

Indicates the QoS policy binding status of the port.

  • If the value is Bound, the port has been bound to a QoS policy.
  • If the value is Unbound, the port has not been bound to a QoS policy. Before deleting a port, set this parameter to Unbound.

Packet Type

cvlan, svlan, ip-dscp, mpls-exp

Set the packet type.

One Diffserv domain may have many types of packets, such as the IP packets, VLAN packets, and MPLS packets. A set of mapping relations are available to use one ID to identify the mapping entities for configuration. The mapping relations are also used on ports.

QoS Configured

Yes, No

Default: Yes

Indicates the QoS policy configuration status of the port.

  • If the value is Yes, the port has been bound to a QoS policy.
  • If the value is No, the port has not been bound to a QoS policy. Before deleting a port, set this parameter to No.

Bandwidth Limit

Enabled, Disabled

The PIR, PBS can be set only when Bandwidth Limit is set to Enabled.

PIR (kbit/s)

For example: 1222

Set the maximum rate for the service to pass.

NOTE:
The PIR range is 0-2499968 for IF ports and 0-1000000 for GE ports.

PBS (bytes)

For example: 1222

Set the peak burst size.

Policy ID

For example: 1

Displays the ID of the policy.

Policy Name

For example: portpolicy 2

Sets the name of the policy.

Traffic Classification Bandwidth Sharing

For example: Disabled
Indicates the status of traffic classification bandwidth sharing.
  • Enabled: The overall traffic of the selected application ports should not exceed the set bandwidth.
  • Disabled: The traffic of one port should not exceed the set bandwidth.
Table 3 QoS Configure

Field

Value

Description

CoS

 CS7, CS6, EF, AF4, AF3, AF2, AF1, BE, None
Define the different service classes.
  • CS6, CS7: Indicates the highest service class. The CoS is applicable to transport of signaling.
  • EF: Indicates fast forwarding. The CoS is applicable to the service of little delay and packet loss rate, such as the audio and video services.
  • AF1-AF4: Indicates the guaranteed forwarding. The CoS is applicable to the service that requires a certain rate, but does not limit the delay or jitter.
  • BE: Indicates the traffic that need not be processed exceptionally.
  • None: Indicates the service classes are not defined.

Grooming Policy After Reloading

SP, WRR, WFQ
Sets the grooming policy after reloading:
  • WRR Grooming Algorithm. The WRR grooming algorithm divides each port into several egress queues and grooms the packets in these queues in turn. This algorithm ensures that every queue obtains a certain period of service.
  • SP Queue Grooming Algorithm. packets of key services are placed in higher priority queues, and packets of non-key services (such as email) are placed in lower priority queues. In this way, packets of key services are always transmitted with a higher priority, and packets of non-key services are transmitted during the transmission intervals of key services.
  • WFQ Grooming Algorithm. A fair queue scheduling algorithm based on bandwidth allocation weights. This scheduling algorithm allocates the total bandwidth of an interface to queues, according to their weights and schedules the queues cyclically. In this manner, packets of all priority queues can be scheduled.

Policy Weight (%)

1 to 100

You can set Policy Weight (%) when the Groom Policy After Reloading is WRR.

Congest

Tail Drop Threshold, RED, WRED
Set congestion management policy.
  • Tail Drop Threshold: When the tail drop threshold is used, the packets that arrive after a queue is full are discarded.
  • RED (Random Early Detection): When the RED policy is used, the packets are discarded at random when a queue reaches a certain length. In this manner, overall synchronization caused by the TCP slow-start mechanism is prevented.
  • WRED (Weighted Random Early Detection): When the WRED policy is used, the queue length and priorities of packets (colors) are considered for packet discarding. The user can configure the packet discarding as follows: The packets of higher discarding priorities (such as red packets and yellow packets) are first discarded. These packets are more probable to be discarded.

Tail Drop Threshold (256 bytes)

0 to 480

Set the tail drop threshold. Tail drop threshold refers to the percentage of the buffer space used by a queue to the total buffer size. When the length of the queue exceeds the value that is equal to the tail drop threshold multiplied by the buffer size, all subsequent packets are dropped. You can set either Tail Drop Threshold (256 bytes) or WRED, but not both.

WRED

Policy ID-Policy Name

Example: 1-default port wred

After bandwidth limit is enabled, you can select the default port WRED policy.

If the queue length is smaller than the lower drop threshold, the packets are not dropped. If the queue length is between the lower drop threshold and the upper drop threshold, the packets are randomly discarded. If the queue length is greater than the upper drop threshold, all the packets are dropped. You can set either Tail Drop Threshold or WRED, but not both.

Bandwidth Limit

Enable, Disable

The PIR, PBS can be set only when Bandwidth Limit is set to Enable.

PIR (kbit/s)

For example: 1222

Set the maximum rate for the service to pass.

NOTE:
The PIR range is 0-2499968 for IF ports and 0-1000000 for GE ports.

PBS (bytes)

For example: 1222

Set the peak burst size.

Table 4 Traffic Classification Configuration

Field

Value

Description

Traffic Classification ID

For example: 2

Set and display the ID of the traffic classification.

Traffic Classification Rules

For example: Protocol Type: TCP

Display the rule for traffic classification. Click Traffic Classification Rules to modify the rule.

CoS

 CS7, CS6, EF, AF4, AF3, AF2, AF1, BE, None
Define the different service classes.
  • CS6, CS7: Indicates the highest service class. The CoS is applicable to transport of signaling.
  • EF: Indicates fast forwarding. The CoS is applicable to the service of little delay and packet loss rate, such as the audio and video services.
  • AF1-AF4: Indicates the guaranteed forwarding. The CoS is applicable to the service that requires a certain rate, but does not limit the delay or jitter.
  • BE: Indicates the traffic that need not be processed exceptionally.
  • None: Indicates the service classes are not defined.

Bandwidth Limit

Enabled, Disabled

The CIR, PIR, CBS, PBS can be set only when Bandwidth Limit is set to Enabled.

CIR (Kbit/s)

For example: 1222

Commit the information rate for the service to pass. This parameter can be set only when Bandwidth Limit is set to Enabled. The CIR of CS7 and CS6 should be the same as PIR.

NOTE:
The PIR range is 0-2499968 for IF ports and 0-1000000 for GE ports.

PIR (Kbit/s)

For example: 1222

Set the maximum rate for the service to pass. This parameter can be set only when Bandwidth Limit is set to Enabled.

NOTE:
The PIR range is 0-2499968 for IF ports and 0-1000000 for GE ports.

PBS (byte)

For example: 1222

Set the peak burst size. This parameter can be set only when Set the peak burst size. This parameter can be set only when Bandwidth Limit is set to Enabled. is set to Enabled.

CBS (byte)

For example: 1222

Set the committed burst size for the traffic to pass in a short time. This parameter can be set only when Bandwidth Limit is set to Enabled.

Logical Relation Between Matched Rules

And, or

Set the logical relation between matched rules.

And indicates that the packet matches the flow only when the packet matches each traffic classification rule. Or indicates that the packet matches the flow when the packet matches one of the traffic classification rules.

Match Type

Source IP Address, Destination IP Address, Source MAC Address, Destination MAC Address, Protocol Type, Source Port, Destination Port, ICMP Packet Type Code, DSCP Value, IP Precedence Value, C-Vlan ID, C-Vlan Priority, S-Vlan ID, S-Vlan Priority, DEI

Click Add to add a row for a new match type.

Match Value

For example: when Match Type is DSCP Value, the Match Value is a value between 0 and 63.

Set the match value of each match type.

Wildcard

For example: when Match Type is DSCP Value, the Wildcard is a value between 0 and 63.

Set the wildcard of the match value.

Adopt 0 for strictly matched bits, and 1 for unconcerned bits.

Packet Color

Red, Yellow, Green

Mark packets in red, yellow or green. The packets marked in red are discarded with the highest priority.

Handling Mode

Discard, Pass, Remark

Set the mode in which packets are handled.

  • Discard: Discard packets.
  • Pass: Forward packets.
  • Remark: Re-set the packet CoS.

Relabeled CoS

-

Re-set the packet CoS when Handling Mode is set to Remark.

Relabeled Color

-

Re-mark color for packets when Handling Mode is set to Remark.
Table 5 Service WRED Policy

Field

Value

Description

Policy ID

Example: 5

Set and display the ID of the policy. If this parameter is set to 0, the system automatically allocates the policy ID.

Policy Name

64 bytes

Set and display the name of the policy.

Packet Color

Red, Yellow, Green

Packets may be marked in red, yellow or green. Different colors indicate different priorities for packet discarding. The packets marked in red are discarded with the highest priority.

Lower Drop Threshold (256 bytes)

0 to 4095

Set the lower threshold for dropping the packets.

When the queue length is lower than the lower drop threshold, the packets are not dropped.

Upper Drop Threshold (256 bytes)

0 to 4095

Set the upper threshold for dropping the packets.

When the queue length is higher than the upper drop threshold, all packets are dropped. The upper drop threshold should not be lower than the lower drop threshold.

Drop Probability (%)

1 to 100

Set the probability for dropping packets marked in different colors.

The drop probability indicates the probability for randomly dropping packets when the queue length is higher than the lower threshold but lower than the upper threshold.
Parent topic: QoS Management
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