Service Manual

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 congured speed dierent from the port channel speed, the software disables those interfaces.
The common speed is determined when the port channel is rst enabled. At that time, the software checks the rst interface listed
in the port channel conguration. If you enabled that interface, its speed conguration becomes the common speed of the port
channel. If the other interfaces congured in that port channel are congured with a dierent 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 rst interface
specied (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 congured 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 conguration so the rst enabled interface
referenced in the conguration 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.
Conguration Tasks for Port Channel Interfaces
To congure a port channel (LAG), use the commands similar to those found in physical interfaces. By default, no port channels are
congured in the startup conguration.
These are the mandatory and optional conguration tasks:
• Creating a Port Channel (mandatory)
• Adding a Physical Interface to a Port Channel (mandatory)
• Reassigning an Interface to a New Port Channel (optional)
• Conguring the Minimum Oper Up Links in a Port Channel (optional)
• Adding or Removing a Port Channel from a VLAN (optional)
• Assigning an IP Address to a Port Channel (optional)
• Deleting or Disabling a Port Channel (optional)
• Load Balancing Through Port Channels (optional)
Creating a Port Channel
You can create up to 512 port channels with up to 16 port members per group on the platform.
To congure a port channel, use the following commands.
1. Create a port channel.
CONFIGURATION mode
interface port-channel id-number
2. Ensure that the port channel is active.
INTERFACE PORT-CHANNEL mode
no shutdown
After you enable the port channel, you can place it in Layer 2 or Layer 3 mode. To place the port channel in Layer 2 mode or
congure an IP address to place the port channel in Layer 3 mode, use the switchport command.
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Interfaces