DELL S6000-ON User Manual
Port channels can contain a mix of 10, 100, or 1000 Mbps Ethernet interfaces and Gigabit Ethernet
interfaces. The interface speed (10, 100, or 1000 Mbps) the port channel uses is determined by the first
port channel member that is physically up. Dell Networking OS disables the interfaces that do match the
interface speed that the first channel member sets. That first interface may be the first interface that is
physically brought up or was physically operating when interfaces were added to the port channel. For
example, if the first operational interface in the port channel is a Gigabit Ethernet interface, all interfaces
at 1000 Mbps are kept up, and all 10/100/1000 interfaces that are not set to 1000 speed or auto
negotiate are disabled.
interfaces. The interface speed (10, 100, or 1000 Mbps) the port channel uses is determined by the first
port channel member that is physically up. Dell Networking OS disables the interfaces that do match the
interface speed that the first channel member sets. That first interface may be the first interface that is
physically brought up or was physically operating when interfaces were added to the port channel. For
example, if the first operational interface in the port channel is a Gigabit Ethernet interface, all interfaces
at 1000 Mbps are kept up, and all 10/100/1000 interfaces that are not set to 1000 speed or auto
negotiate are disabled.
Dell Networking OS brings up 10/100/1000 interfaces that are set to auto negotiate so that their speed is
identical to the speed of the first channel member in the port channel.
identical to the speed of the first channel member in the port channel.
10/100/1000 Mbps Interfaces in Port Channels
When both 10/100/1000 interfaces and GigE 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 you enabled that interface, 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 1/1, 1/2, 1/3 and 1/4) in which Gi 1/1 and Gi 1/2are set to speed
1000 Mb/s and the others (te 1/3 and 1/4)are set to 10000 Mb/s, with all interfaces enabled, and you add
them to a port channel by entering channel-member tengigabitethernet 1/1/1-4while in port
channel interface mode, and Dell Networking OS determines if the first interface specified (TenGig 1/1) 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.
checks the first interface listed in the port channel configuration. If you enabled that interface, 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 1/1, 1/2, 1/3 and 1/4) in which Gi 1/1 and Gi 1/2are set to speed
1000 Mb/s and the others (te 1/3 and 1/4)are set to 10000 Mb/s, with all interfaces enabled, and you add
them to a port channel by entering channel-member tengigabitethernet 1/1/1-4while in port
channel interface mode, and Dell Networking OS determines if the first interface specified (TenGig 1/1) 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.
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 configuration is a 1000 Mb/s speed interface. You can also
change the common speed of the port channel here by setting the speed of the Te 1/1 interface to 1000
Mb/s.
the first enabled interface referenced in the configuration is a 1000 Mb/s speed interface. You can also
change the common speed of the port channel here by setting the speed of the Te 1/1 interface to 1000
Mb/s.
Configuration Tasks for Port Channel Interfaces
To configure a port channel (LAG), use the commands similar to those found in physical interfaces. By
default, no port channels are configured in the startup configuration.
default, no port channels are configured in the startup configuration.
These are the mandatory and optional configuration tasks:
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(mandatory)
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Interfaces