Static Pinning Fabric Interface Connection - Cisco Nexus 5000 Series Configuration Manual

Static Pinning Fabric Interface Connection

Static Pinning Fabric Interface Connection
To provide a deterministic relationship between the host interfaces and the parent switch, you can configure
the Fabric Extender to use individual fabric interface connections. This configuration connects the 10-Gigabit
Ethernet fabric interfaces as shown in the following figure. You can use any number of fabric interfaces up
to the maximum available on the model of the Fabric Extender.
Figure 31: Static Pinning Fabric Interface Connections
When the Fabric Extender is brought up, its host interfaces are distributed equally among the available fabric
interfaces. As a result, the bandwidth that is dedicated to each end host toward the parent switch is never
changed by the switch but instead is always specified by you.
If a fabric interface fails, all its associated host interfaces are brought down and remain down until the
Note
fabric interface is restored.
You must use the pinning max-links command to create a number of pinned fabric interface connections so
that the parent switch can determine a distribution of host interfaces. The host interfaces are divided by the
number of the max-links and distributed accordingly. The default value is max-links 1.
Changing the value of the max-links is disruptive; all the host interfaces on the Fabric Extender are brought
Caution
down and back up as the parent switch reassigns its static pinning.
The pinning order of the host interfaces is initially determined by the order in which the fabric interfaces were
configured. When the parent switch is restarted, the configured fabric interfaces are pinned to the host interfaces
in an ascending order by the port number of the fabric interface.
To guarantee a deterministic and sticky association across a reboot, you can manually redistribute the pinning.
Cisco Nexus 5000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)N1(1)
246
Configuring the Fabric Extender