Reference Guide

first interface specified (TenGig 0/1) is up. After it is up, the common speed of the port channel is 10 Gb/s. The system disables
those interfaces configured with speed 40 Gb/s or whose speed is 40 Gb/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 10 Gb/s speed interface. You can also change the common speed of the port
channel here by setting the speed of the Te 0/0 interface to 10 Gb/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.
These are the mandatory and optional configuration tasks:
● Creating a Port Channel (mandatory)
● Adding a Physical Interface to a Port Channel (mandatory)
● Reassigning an Interface to a New Port Channel (optional)
● Configuring 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 configure 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
configure an IP address to place the port channel in Layer 3 mode, use the switchport command.
You can configure a port channel as you would a physical interface by enabling or configuring protocols or assigning access
control lists.
Adding a Physical Interface to a Port Channel
The physical interfaces in a port channel can be on any line card in the chassis, but must be the same physical type.
You can add any physical interface to a port channel if the interface configuration is minimal. You can configure only the
following commands on an interface if it is a member of a port channel:
● description
● shutdown/no shutdown
● mtu
● ip mtu (if the interface is on a Jumbo-enabled by default)
NOTE:
A logical port channel interface cannot have flow control. Flow control can only be present on the physical
interfaces if they are part of a port channel.
NOTE: The Z9500 supports jumbo frames by default (the default maximum transmission unit (MTU) is 9216 bytes). To
configure the MTU, use the mtu command from INTERFACE mode.
342 Interfaces