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Monitoring CoS Forwarding Classes

 

Purpose

Note

This topic applies only to the J-Web Application package.

J-Web Application package Release 14.1X53-A2 does not support Class of Service (CoS) on EX4600 switches.

View the current assignment of CoS forwarding classes to queues on the switch.

Action

To monitor CoS forwarding classes in the J-Web interface, select Monitor > Class of Service > Forwarding Classes.

To monitor CoS forwarding classes in the CLI, enter the following CLI command:

show class-of-service forwarding-class

Meaning

Table 1 summarizes key output fields for CoS forwarding classes.

Table 1: Summary of Key CoS Forwarding Class Output Fields

Field

Values

Forwarding Class

Names of forwarding classes assigned to queue numbers. The following are the default forwarding classes:

  • best-effort—Provides no special CoS handling of packets. Loss priority is typically not carried in a CoS value.

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

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

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

EX8200 switches have the following additional default forwarding classes:

  • mcast-be—Provides no special CoS handling of packets.

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

  • mcast-af—Provides high assurance for packets within the specified service profile. Excess packets are dropped.

EX4300 switches supports all the forwarding classes mentioned above and the one mentioned in this section:

  • mcast-nc—Provides multicast network-control traffic.

Queue

Queue number corresponding to the forwarding class name. The default forwarding classes are assigned as follows:

  • best-effort—0

  • expedited-forwarding—5

  • assured-forwarding—1

  • network-control—7

  • mcast-be—2

  • mcast-ef—4

  • mcast-af—6

EX4300 switches have the following queue numbers for the forwarding classes:

  • best-effort—0

  • expedited-forwarding—1

  • assured-forwarding—2

  • network-control—3

  • mcast-be—8

  • mcast-ef—9

  • mcast-af—10

  • mcast-nc—11

Fabric Priority

(EX8200 switches only) Fabric priority for the forwarding class, either high or low. The fabric priority determines the priority of packets entering the switch fabric.