Class of Service
Monitoring CoS Interfaces
Purpose
Display details about the physical and logical interfaces and the CoS components assigned to them.
Action
Select Monitor>Class of Service>Interfaces in the J-Web user interface, or enter the show class-of-service interface interface command.
Table 83 summarizes key output fields for CoS interfaces.
Table 83: Summary of Key CoS Interfaces Output Fields
Field | Values | Additional Information |
---|---|---|
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 (+). |
Scheduler Map | Name of the scheduler map associated with this interface. | – |
Queues Supported | Number of queues you can configure on the interface. | – |
Queues in Use | Number of queues currently configured. | – |
Logical Interface | Name of a logical interface on the physical interface, to which CoS components are assigned. | – |
Object | Category of an object—for example, classifier, scheduler-map, or rewrite. | – |
Name | Name that you have given to an object—for example, ba-classifier. | – |
Type | Type of an object—for example, dscp, or exp for a classifier. | – |
Index | Index of this interface or the internal index of a specific object. | – |
Monitoring CoS Classifiers
Purpose
Display the mapping of incoming CoS value to forwarding class and loss priority.
Action
For each classifier, select Monitor>Class of Service>Classifiers in the J-Web user interface, or enter the show class-of-service classifier command.
Table 84 summarizes key output fields for CoS classifiers.
Table 84: Summary of Key CoS Classifier Output Fields
Classifier Name | Name of a classifier. | To display classifier assignments, click the plus sign (+). |
CoS Value Type | The classifiers are displayed by type:
| |
Index | Internal index of the classifier. | |
Incoming CoS Value | CoS value of the incoming packets, in bits. These values are used for classification. | |
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. | |
Assign to Loss Priority | Loss priority value that the classifier assigns to the incoming packet based on its CoS value. |
Monitoring CoS Value Aliases
Purpose
Display information about the CoS value aliases that the system is currently using to represent DSCP, DSCP IPv6, MPLS EXP, and IPv4 precedence bits.
Action
Select Monitor>Class of Service>CoS Value Aliases in the J-Web user interface, or enter the show class-of-service code-point-aliases command.
Table 85 summarizes key output fields for CoS value aliases.
Table 85: Summary of Key CoS Value Alias Output Fields
Field | Values | Additional Information |
---|---|---|
CoS Value Type | Type of the CoS value:
| To display aliases and bit patterns, click the plus sign (+). |
CoS Value Alias | Name given to a set of bits—for example, af11 is a name for 001010 bits. | – |
Bit Pattern | Set of bits associated with an alias. | – |
Monitoring CoS RED Drop Profiles
Purpose
Display data point information for each CoS random early detection (RED) drop profile currently on a system.
Action
Select Monitor>Class of Service>RED Drop Profiles in the J-Web user interface, or enter the show class-of-service drop-profile command.
Table 86 summarizes key output fields for CoS RED drop profiles.
Table 86: Summary of Key CoS RED Drop Profile Output Fields
Field | Values | Additional Information |
---|---|---|
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 (+). |
Graph RED Profile | Link to a graph of a RED curve that the system uses to determine the drop probability based on queue buffer fullness. | The x axis represents the queue buffer fill level, and the y axis represents the drop probability. |
Type | Type of a specific drop profile:
| – |
Index | Internal index of this drop profile. | – |
Fill Level | Percentage fullness of a buffer queue. This value is the x coordinate of the RED drop profile graph. | – |
Drop Probability | Drop probability of a packet corresponding to a specific queue buffer fill level. This value is the y coordinate of the RED drop profile graph. | – |
Monitoring CoS Forwarding Classes
Purpose
View the current assignment of CoS forwarding classes to queue numbers on the system.
Action
Select Monitor>Class of Service>Forwarding Classes in the J-Web user interface, or enter the show class-of-service forwarding-class command.
Table 87 summarizes key output fields for CoS forwarding classes.
Table 87: Summary of Key CoS Forwarding Class Output Fields
Field | Values | Additional Information |
---|---|---|
Forwarding Class | Names of forwarding classes assigned to queue numbers. By default, the following forwarding classes are assigned to queues 0 through 3:
| – |
Queue | Queue number corresponding to the forwarding class name. | By default, four queues, 0 through 3, are assigned to forwarding classes. |
Monitoring CoS Rewrite Rules
Purpose
Display information about CoS value rewrite rules, which are based on the forwarding class and loss priority.
Action
Select Monitor>Class of Service>Rewrite Rules in the J-Web user interface, or enter the show class-of-service rewrite-rules command.
Table 88 summarizes key output fields for CoS rewrite rules.
Table 88: Summary of Key CoS Rewrite Rules Output Fields
Field | Values | Additional Information |
---|---|---|
Rewrite Rule Name | Names of rewrite rules. | – |
CoS Value Type | Rewrite rule type:
| To display forwarding classes, loss priorities, and rewritten CoS values, click the plus sign (+). |
Index | Internal index for this particular rewrite rule. | – |
Forwarding Class | Forwarding class that in combination with loss priority is used to determine CoS values for rewriting. | Rewrite rules are applied to CoS values in outgoing packets based on forwarding class and loss priority setting. |
Loss Priority | Loss priority that in combination with forwarding class is used to determine CoS values for rewriting. | – |
Rewrite CoS Value To | Value that the CoS value is rewritten to. | – |
Monitoring CoS Scheduler Maps
Purpose
Display assignments of CoS forwarding classes to schedulers.
Action
Select Monitor>Class of Service>Scheduler Maps in the J-Web user interface, or enter the show class-of-service scheduler-map command.
Table 89 summarizes key output fields for CoS scheduler maps.
Table 89: Summary of Key CoS Scheduler Maps Output Fields
Field | Values | Additional Information |
---|---|---|
Scheduler Map | Name of a scheduler map. | For details, click the plus sign (+). |
Index | Index of a specific object—scheduler maps, schedulers, or drop profiles. | – |
Scheduler Name | Name of a scheduler. | – |
Forwarding Class | Forwarding classes this scheduler is assigned to. | – |
Transmit Rate | Configured transmit rate of the scheduler in bits per second (bps). The rate value can be either of the following:
| – |
Rate Limit | Rate limiting configuration of the queue:
| – |
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:
| – |
Priority | Scheduling priority of a queue:
| – |
Drop Profiles | Name and index of a drop profile that is assigned to a specific loss priority and protocol pair. | – |
Loss Priority | Packet loss priority corresponding to a drop profile:
| – |
Protocol | Transport protocol corresponding to a drop profile. | – |
Drop Profile Name | Name of the drop profile. | – |