Supported Platforms
Related Documentation
- QFabric System, QFX Series standalone switches
- Configuring CoS PFC (Congestion Notification Profiles)
- Example: Configuring Two or More Lossless FCoE IEEE 802.1p Priorities on Different FCoE Transit Switch Interfaces
- Example: Configuring Two or More Lossless FCoE Priorities on the Same FCoE Transit Switch Interface
- 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 Lossless IEEE 802.1p Priorities on Ethernet Interfaces for Multiple Applications (FCoE and iSCSI)
- Understanding CoS IEEE 802.1p Priorities for Lossless Traffic Flows
code-point (Output Congestion Notification)
Syntax
Hierarchy Level
Release Information
Statement introduced in Junos OS Release 12.3 for the QFX Series.
Description
Specify the IEEE 802.1p code point bits that identify the traffic you want to enable for priority-based flow control (PFC) pause.
Default
By default, IEEE 802.1p priorities 3 and 4 (code points 011 and 100, respectively) are enabled for PFC pause on all Ethernet interfaces. If you explicitly configure priorities to pause and the output queues on which to enable pause, the explicit configuration overrides the default configuration. When you apply an explicit output congestion notification profile to an interface, only the priorities and queues specified in the output congestion notification profile are enabled for pause on that interface.
For example, if you configure an output congestion notification profile that specifies priority 2 (code point 010), then traffic with IEEE 802.1p priority 2 is paused on the configured output queue during periods of congestion. However, traffic with priority 3 and priority 4 is not programmed to pause, because the explicit configuration overwrites the default configuration, and the explicit configuration does not pause priority 3 and priority 4. If you configure an explicit output congestion notification profile, all of the priorities you want to enable for PFC and all of the output queues you want to pause must be explicitly configured.
Options
code-point-bits—3-bit value in decimal form.
The remaining statements are described separately.
Required Privilege Level
interfaces—To view this statement in the
configuration.
interface-control—To add this
statement to the configuration.
Related Documentation
- QFabric System, QFX Series standalone switches
- Configuring CoS PFC (Congestion Notification Profiles)
- Example: Configuring Two or More Lossless FCoE IEEE 802.1p Priorities on Different FCoE Transit Switch Interfaces
- Example: Configuring Two or More Lossless FCoE Priorities on the Same FCoE Transit Switch Interface
- 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 Lossless IEEE 802.1p Priorities on Ethernet Interfaces for Multiple Applications (FCoE and iSCSI)
- Understanding CoS IEEE 802.1p Priorities for Lossless Traffic Flows
Published: 2014-07-23
Supported Platforms
Related Documentation
- QFabric System, QFX Series standalone switches
- Configuring CoS PFC (Congestion Notification Profiles)
- Example: Configuring Two or More Lossless FCoE IEEE 802.1p Priorities on Different FCoE Transit Switch Interfaces
- Example: Configuring Two or More Lossless FCoE Priorities on the Same FCoE Transit Switch Interface
- 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 Lossless IEEE 802.1p Priorities on Ethernet Interfaces for Multiple Applications (FCoE and iSCSI)
- Understanding CoS IEEE 802.1p Priorities for Lossless Traffic Flows
