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
- Understanding CoS Flow Control (Ethernet PAUSE and PFC)
- Understanding CoS IEEE 802.1p Priorities for Lossless Traffic Flows
cable-length (Congestion Notification)
Syntax
Hierarchy Level
Release Information
Statement introduced in Junos OS Release 12.3 for the QFX Series.
Description
Specify the length of the cable between the interface and its peer interface in meters. The system uses the cable length and the maximum receive unit (MRU) to calculate the amount of buffer headroom reserved to support priority-based flow control (PFC). The the shorter the cable length and lower the MRU, the less headroom buffer space is required for PFC.
 | Note: You can also set a maximum transmission unit (MTU) value (the largest packet size the interface sends) for interfaces by including the mtu statement at the [edit interfaces interface-name] hierarchy level. |
Default
The default cable length value is 100 meters (approximately 328 feet).
Options
cable-length-value—Length of the cable in meters. (Generally from 1 to 300 meters, but there is no configuration restriction.)
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
- Understanding CoS Flow Control (Ethernet PAUSE and PFC)
- 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
- Understanding CoS Flow Control (Ethernet PAUSE and PFC)
- Understanding CoS IEEE 802.1p Priorities for Lossless Traffic Flows
