show class-of-service congestion-notification
Syntax
show class-of-service congestion-notification <profile-name>
Description
Display whether priority-based flow control (PFC) is enabled for each IEEE 802.1p code point or for each DSCP value for DSCP-based PFC.
Options
| none | Display the PFC state for all IEEE 802.1p code points or DSCP values. |
| profile-name | Display the PFC state for all IEEE 802.1p code points or DSCP values for the specified congestion notification profile. |
Required Privilege Level
view
Output Fields
Table 1 describes the output fields for the show class-of-service congestion-notification command. Output fields are listed in the approximate order in which
they appear.
Field Name |
Field Description |
|---|---|
|
Type of interfaces on which congestion notification is applied. Congestion notification is applied on input interfaces. |
|
Index of this congestion notification profile. |
|
Name of the congestion notification profile. |
|
Length of the attached physical cable in meters. The default value is 100 meters. |
|
IEEE 802.1p code points, or for DSCP-based PFC, DSCP values. |
|
State of PFC for the corresponding code point, either |
|
Maximum receive unit of the interface in bytes. (Incoming traffic that exceeds the MRU size of an interface is dropped.) The default values are:
Note:
If you configure flow control on a priority that is not one of the default flow control priorities, the default MRU value is 2500 bytes. For example, if you configure flow control on priority 5 and you do not configure an MRU value, the default MRU value is 2500 bytes. |
|
Output queue mapping to IEEE 802.1p code points (priorities). Explicit output queue to priority mapping overwrites the default configuration, and only explicitly mapped queues are displayed in the output. Flow control is only enabled on a queue when you enable PFC on the corresponding priority in the input stanza of the congestion notification profile. |
Sample Output
show class-of-service congestion-notification
user@switch> show class-of-service congestion-notification
Name: fcoe_p3_cnp, Index: 12037
Type: Input
Cable Length: 100 m
Priority PFC MRU
000 Disabled
001 Disabled
010 Disabled
011 Enabled 2500
100 Enabled 9216
101 Disabled
110 Disabled
111 Disabled
Type: Output
Priority Flow-Control-Queues
000
0
001
1
010
2
011
3
100
4
101
5
110
6
111
7
Name: fcoe_p3_p5_cnp, Index: 46484
Type: Input
Cable Length: 100 m
Priority PFC MRU
000 Disabled
001 Disabled
010 Disabled
011 Enabled 2240
100 Disabled
101 Enabled 2240
110 Disabled
111 Disabled
Type: Output
Priority Flow-Control-Queues
011
3
101
5
Sample Output
show class-of-service congestion-notification (QFX Series with DSCP-based PFC and a specified congestion notification profile)
user@switch> show class-of-service congestion-notification dscp_cnp Name: dscp_cnp, Index: 13825 Type: Input Cable Length: 100 m Priority PFC MRU 000000 Disabled 000001 Disabled 000010 Disabled 000011 Disabled 000100 Disabled 000101 Disabled 000110 Disabled 000111 Disabled 001000 Disabled 001001 Disabled 001010 Disabled 001011 Disabled 001100 Disabled 001101 Disabled 001110 Disabled 001111 Disabled 010000 Disabled 010001 Disabled 010010 Disabled 010011 Disabled 010100 Disabled 010101 Disabled 010110 Disabled 010111 Disabled 011000 Disabled 011001 Disabled 011010 Disabled 011011 Disabled 011100 Disabled 011101 Disabled 011110 Disabled 011111 Disabled 100000 Disabled 100001 Disabled 100010 Disabled 100011 Disabled 100100 Disabled 100101 Disabled 100110 Disabled 100111 Disabled 101000 Disabled 101001 Disabled 101010 Disabled 101011 Disabled 101100 Disabled 101101 Disabled 101110 Disabled 101111 Disabled 110000 Enabled 3000 110001 Disabled 110010 Disabled 110011 Disabled 110100 Disabled 110101 Disabled 110110 Disabled 110111 Disabled 111000 Enabled 2000 111001 Disabled 111010 Disabled 111011 Disabled 111100 Enabled 4000 111101 Disabled 111110 Disabled 111111 Disabled Type: Output Priority Flow-Control-Queues 111 1
Release Information
Command introduced in Junos OS Release 11.1.
Output for DSCP values introduced for DSCP-based PFC in Junos OS Release 17.4R1 for the QFX Series.