Class of Service

Interface

Name of a physical interface to which CoS components are assigned.

To display names of logical interfaces configured on this physical interface, click the plus sign (+).

Queues Supported

Number of queues you can configure on the interface.

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Logical Interface

Name of a logical interface on the physical interface, to which CoS components are assigned.

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Name

Name that you have given to an object—for example, ba-classifier.

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Index

Index of this interface or the internal index of a specific object.

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Classifier Name

Name of a classifier.

To display classifier assignments, click the plus sign (+).

Index

Internal index of the classifier.

Assign to Forwarding Class

Forwarding class that the classifier assigns to an incoming packet. This class affects the forwarding and scheduling policies that are applied to the packet as it transits the device.

CoS Value Type

Type of the CoS value:

• dscp—Examines Layer 3 packet headers for IP packet classification.

• dscp ipv6—Examines Layer 3 packet headers for IPv6 packet classification.

• exp—Examines Layer 2 packet headers for MPLS packet classification.

• ieee-802.1—Examines Layer 2 packet header for packet classification.

• inet-precedence—Examines Layer 3 packet headers for IP packet classification.

To display aliases and bit patterns, click the plus sign (+).

Bit Pattern

Set of bits associated with an alias.

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RED Drop Profile Name

Name of the RED drop profile.

A drop profile consists of pairs of values between 0 and 100, one for queue buffer fill level and one for drop probability, that determine the relationship between a buffer's fullness and the likelihood it will drop packets.

To display profile values, click the plus sign (+).

Type

Type of a specific drop profile:

• interpolated—The two coordinates (x and y) of the graph are interpolated to produce a smooth profile.

• segmented—The two coordinates (x and y) of the graph are represented by line fragments to produce a segmented profile.

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Fill Level

Percentage fullness of a buffer queue. This value is the x coordinate of the RED drop profile graph.

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Forwarding Class

Names of forwarding classes assigned to queue numbers. By default, the following forwarding classes are assigned to queues 0 through 3:

• best-effort—Provides no special CoS handling of packets. Loss priority is typically not carried in a CoS value, and RED drop profiles are more aggressive.

• expedited-forwarding—Provides low loss, low delay, low jitter, assured bandwidth, and end-to-end service.

• assured-forwarding—Provides high assurance for packets within specified service profile. Excess packets are dropped.

• network-control—Packets can be delayed but not dropped.

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Rewrite Rule Name

Names of rewrite rules.

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Index

Internal index for this particular rewrite rule.

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Loss Priority

Loss priority that in combination with forwarding class is used to determine CoS values for rewriting.

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Scheduler Map

Name of a scheduler map.

For details, click the plus sign (+).

Scheduler Name

Name of a scheduler.

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Transmit Rate

Configured transmit rate of the scheduler in bits per second (bps). The rate value can be either of the following:

• A percentage—The scheduler receives the specified percentage of the total interface bandwidth.

• remainder—The scheduler receives the remaining bandwidth of the interface after allocation to other schedulers.

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Buffer Size

Delay buffer size in the queue or the amount of transmit delay (in milliseconds). The buffer size can be either of the following:

• A percentage—The buffer is a percentage of the total buffer allocation.

• remainder—The buffer is sized according to what remains after other scheduler buffer allocations.

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Drop Profiles

Name and index of a drop profile that is assigned to a specific loss priority and protocol pair.

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Protocol

Transport protocol corresponding to a drop profile.

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