Configuring LAN Pin Groups
This chapter includes the following sections:
Cisco UCS uses LAN pin groups to pin Ethernet
traffic from a vNIC on a server to an uplink Ethernet port or port channel on
the fabric interconnect. You can use this pinning to manage the distribution of
traffic from the servers.
To configure pinning
for a server, you must include the LAN pin group in a vNIC policy. The vNIC
policy is then included in the service profile assigned to that server. All
traffic from the vNIC travels through the I/O module to the specified uplink
If you do not assign
a pin group to a server interface through a vNIC policy,
Cisco UCS Manager chooses an uplink Ethernet port or port channel for traffic from
that server interface dynamically. This choice is not permanent. A different
uplink Ethernet port or port channel may be used for traffic from that server
interface after an interface flap or a server reboot.
If an uplink is part of a LAN pin group, the uplink is not necessarily
reserved for only that LAN pin group. Other vNIC's policies that do not specify
a LAN pin group can use the uplink as a dynamic uplink.
Configuring a LAN Pin Group
In a system with two fabric interconnects, you can associate the
pin group with only one fabric interconnect or with both fabric interconnects.
Before You Begin
Configure the ports and port channels with which you want to
configure the pin group. You can only include ports and port channels
configured as uplink ports in a LAN pin group.
| ||Command or Action||Purpose|
Enters Ethernet uplink mode.
|Step 2||UCS-A /eth-uplink #
Creates an Ethernet (LAN) pin group with the specified name, and enters
Ethernet uplink pin group mode.
|Step 3||UCS-A /eth-uplink/pin-group #
Provides a description for the pin group.
If your description includes spaces, special characters, or
punctuation, you must begin and end your description with quotation marks. The
quotation marks will not appear in the description field of any
|Step 4||UCS-A /eth-uplink/pin-group #
Sets the Ethernet pin target to the specified fabric and port, or
fabric and port channel.
|Step 5||UCS-A /eth-uplink/pin-group #
Commits the transaction to the system configuration.
The following example creates a LAN pin group named pingroup54
on fabric A, provides a description for the pin group, sets the pin group
target to port channel 28, and commits the transaction:
UCS-A# scope eth-uplink
UCS-A /eth-uplink # create pin-group pingroup54
UCS-A /eth-uplink/pin-group* # set descr "This is my pin group #54"
UCS-A /eth-uplink/pin-group* # set target a port-channel 28
UCS-A /eth-uplink/pin-group* # commit-buffer
UCS-A /eth-uplink/pin-group #
What to Do Next
Include the pin group in a vNIC template.