Supported Platforms
Related Documentation
- QFabric System, QFX Series standalone switches
- Configuring CoS PFC (Congestion Notification Profiles)
- Example: Configuring CoS PFC for FCoE Traffic
- Example: Configuring Lossless FCoE Traffic When the Converged Ethernet Network Does Not Use IEEE 802.1p Priority 3 for FCoE Traffic (FCoE Transit Switch)
- Example: Configuring Two or More Lossless FCoE Priorities on the Same FCoE Transit Switch Interface
- Example: Configuring Two or More Lossless FCoE IEEE 802.1p Priorities on Different FCoE Transit Switch Interfaces
- Example: Configuring Lossless IEEE 802.1p Priorities on Ethernet Interfaces for Multiple Applications (FCoE and iSCSI)
- Example: Configuring IEEE 802.1p Priority Remapping on an FCoE-FC Gateway
- Understanding CoS Flow Control (Ethernet PAUSE and PFC)
- QFX Series standalone switches
- Example: Configuring PFC Across Layer 3 Interfaces
show class-of-service congestion-notification
Syntax
Release Information
Command introduced in Junos OS Release 11.1 for the QFX Series.
Description
Display whether priority-based flow control (PFC) is enabled for each IEEE 802.1p code point.
Options
none | — | Display the PFC state for all IEEE 802.1p code points. |
Required Privilege Level
view
Related Documentation
- QFabric System, QFX Series standalone switches
- Configuring CoS PFC (Congestion Notification Profiles)
- Example: Configuring CoS PFC for FCoE Traffic
- Example: Configuring Lossless FCoE Traffic When the Converged Ethernet Network Does Not Use IEEE 802.1p Priority 3 for FCoE Traffic (FCoE Transit Switch)
- Example: Configuring Two or More Lossless FCoE Priorities on the Same FCoE Transit Switch Interface
- Example: Configuring Two or More Lossless FCoE IEEE 802.1p Priorities on Different FCoE Transit Switch Interfaces
- Example: Configuring Lossless IEEE 802.1p Priorities on Ethernet Interfaces for Multiple Applications (FCoE and iSCSI)
- Example: Configuring IEEE 802.1p Priority Remapping on an FCoE-FC Gateway
- Understanding CoS Flow Control (Ethernet PAUSE and PFC)
- QFX Series standalone switches
- Example: Configuring PFC Across Layer 3 Interfaces
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.
Table 1: show class-of-service congestion-notification Output Fields
Field Name | Field Description |
|---|---|
Type | Type of interfaces on which congestion notification is applied. Congestion notification is applied on input interfaces. |
Index | Index of this congestion notification profile. |
Name | Name of the congestion notification profile. |
Cable Length | Length of the attached physical cable in meters. The default value is 100 meters. |
Priority | IEEE 802.1p code point. |
PFC | State of PFC for the corresponding code point, either enabled or disabled. |
MRU | 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. |
Flow-Control-Queues | 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
Published: 2014-07-23
Supported Platforms
Related Documentation
- QFabric System, QFX Series standalone switches
- Configuring CoS PFC (Congestion Notification Profiles)
- Example: Configuring CoS PFC for FCoE Traffic
- Example: Configuring Lossless FCoE Traffic When the Converged Ethernet Network Does Not Use IEEE 802.1p Priority 3 for FCoE Traffic (FCoE Transit Switch)
- Example: Configuring Two or More Lossless FCoE Priorities on the Same FCoE Transit Switch Interface
- Example: Configuring Two or More Lossless FCoE IEEE 802.1p Priorities on Different FCoE Transit Switch Interfaces
- Example: Configuring Lossless IEEE 802.1p Priorities on Ethernet Interfaces for Multiple Applications (FCoE and iSCSI)
- Example: Configuring IEEE 802.1p Priority Remapping on an FCoE-FC Gateway
- Understanding CoS Flow Control (Ethernet PAUSE and PFC)
- QFX Series standalone switches
- Example: Configuring PFC Across Layer 3 Interfaces
