Dell Force10 S55T S55 Configuration Guide FTOS 8.3.5.3 - Page 296
Configuration task list for port channel interfaces, Create a port channel, CONFIGURATION mode
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www.dell.com | support.dell.com For example, if four interfaces (Gi 0/0, 0/1, 0/2, 0/3) in which Gi 0/0 and Gi 0/3 are set to speed 100 Mb/s and the others are set to 1000 Mb/s, with all interfaces enabled, and you add them to a port channel by entering channel-member gigabitethernet 0/0-3 while in the port channel interface mode, and FTOS determines if the first interface specified (Gi 0/0) is up. Once it is up, the common speed of the port channel is 100 Mb/s. FTOS disables those interfaces configured with speed 1000 or whose speed is 1000 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 Gi 0/0 interface to 1000 Mb/s. Configuration task list for port channel interfaces To configure a port channel (LAG), you use the commands similar to those found in physical interfaces. By default, no port channels are configured in the startup configuration. • Create a port channel (mandatory) • Add a physical interface to a port channel on page 297 (mandatory) • Reassign an interface to a new port channel on page 299 (optional) • Configure the minimum oper up links in a port channel (LAG) on page 300 (optional) • Add or remove a port channel from a VLAN on page 300 (optional) • Assign an IP address to a port channel on page 301 (optional) • Delete or disable a port channel on page 301 (optional) • Load balancing through port channels on page 302 (optional) Create a port channel You can create up to 255 port channels on an E-Series. You can create up to 128 port channels on C-Series and S-Series. To configure a port channel, use these commands in the following sequence, starting in the CONFIGURATION mode: Step Command Syntax 1 interface port-channel id-number 2 no shutdown Command Mode CONFIGURATION INTERFACE PORT-CHANNEL Purpose Create a port channel. Ensure that the port channel is active. The port channel is now enabled and you can place the port channel in Layer 2 or Layer 3 mode. Use the switchport command to place the port channel in Layer 2 mode or configure an IP address to place the port channel in Layer 3 mode. You can configure a port channel as you would a physical interface by enabling or configuring protocols or assigning access control lists. 296 | Interfaces