Dell PowerEdge FX2/FX2s - Manual (Page 101)

10GbE Interface in Port Channels
When TenGigabitEthernet interfaces are added to a port channel, the interfaces must share a common
speed. When interfaces have a configured speed different from the port channel speed, the software
disables those interfaces.
The common speed is determined when the port channel is first enabled. At that time, the software
checks the first interface listed in the port channel configuration. If that interface is enabled, its speed
configuration becomes the common speed of the port channel. If the other interfaces configured in that
port channel are configured with a different speed, Dell Networking OS disables them.
For example, if four interfaces (TenGig 0/1, 0/2, 0/3 and 0/4) in which TenGig 0/1 and TenGig 0/2 are set
to speed 1000 Mb/s and the TenGig 0/3 and TenGig0/4 are set to 10000 Mb/s, with all interfaces
enabled, and you add them to a port channel by entering channel-member tengigabitethernet
0/1-4 while in port channel interface mode, and the Dell Networking OS determines if the first interface
specified (TenGig 0/1) is up. After it is up, the common speed of the port channel is 1000 Mb/s. Dell
Networking OS disables those interfaces configured with speed 10000 Mb/s or whose speed is 10000
Mb/s as a result of auto-negotiation. The channel-member command is available only in PMUX mode.
In this example, you can change the common speed of the port channel by changing its configuration so
the first enabled interface referenced in the port level is a 1000 Mb/s speed interface. You can also
change the common speed of the port channel by setting the speed of the TenGig 0/1 interface to 1000
Mb/s.
Uplink Port Channel: VLAN Membership
The tagged VLAN membership of the uplink LAG is automatically configured based on the VLAN
configuration of all server-facing ports (ports 1 to 8).
The untagged VLAN used for the uplink LAG is always the default VLAN 1.
Server-Facing Port Channel: VLAN Membership
The tagged VLAN membership of a server-facing LAG is automatically configured based on the server-
facing ports that are members of the LAG.
The untagged VLAN of a server-facing LAG is auto-configured based on the untagged VLAN to which the
lowest numbered server-facing port in the LAG belongs.
Displaying Port Channel Information
To view the port channel’s status and channel members in a tabular format, use the show interfaces
port-channel brief command in EXEC Privilege mode.
Dell#sh int port-channel brief
Codes: L - LACP Port-channel
O - OpenFlow Controller Port-channel
LAG Mode Status Uptime Ports
L 1 L2 up 00:00:19 Te 0/7 (Up)
Te 0/8 (Up)
L 128 L2 up 00:00:36 Te 0/9 (Up)
Te 0/10 (Up)
Te 0/11 (Up)
Dell#
Interfaces 101