Dell Force10 MXL Blade, Reference Manual

Page: 278 / 732

278 | Interfaces
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Usage
Information
Use the interface port-channel command to access this command.
You cannot add an interface to a Port Channel if the interface contains an IP address in its
configuration.
Link MTU and IP MTU considerations for Port Channels are:
• All members must have the same link MTU value and the same IP MTU value.
• The Port Channel link MTU and IP MTU must be less than or equal to the link MTU and IP MTU
values configured on the channel members.
For example, if the members have a link MTU of 2100 and an IP MTU 2000, the Port Channel’s MTU
values cannot be higher than 2100 for link MTU or 2000 bytes for IP MTU.
When an interface is removed from a Port Channel with the no channel-member command syntax, the
interface reverts to its configuration prior to joining the Port Channel.
An interface can belong to only one Port Channel.
You can have sixteen interfaces per Port Channel on the MXL Switch. The interfaces can be located on
different stack units but must be the same physical type and speed (for example, all 10-Gigabit
Ethernet interfaces). However, you can combine 100/1000 interfaces and GE interfaces in the same
Port Channel.
If the Port Channel contains a mix of interfaces with 100 Mb/s speed and 1000 Mb/s speed, the
software disables those interfaces whose speed does not match the speed of the first interface
configured and enabled in the Port Channel. If that first interface goes down, the Port Channel does not
change its designated speed; you must disable and re-enable the Port Channel or change the order of
the channel members configuration to change the designated speed. Refer to the
FTOS Configuration
Guide for more information on Port Channels.
Related
Commands
group
Group two LAGs in a supergroup (“fate-sharing group” or “failover group”).
Syntax group group_number port-channel number port-channel number
To remove an existing LAG supergroup, use the no group group_number command.
Parameters
Defaults none
description Assigns a descriptive text string to the interface.
interface port-channel Creates a Port Channel interface.
shutdown Disables/Enables the port channel.
group_number Enter an integer from 1 to 32 that will uniquely identify this LAG
fate-sharing group.
port-channel number
Enter the keyword
port-channel
followed by an existing LAG
number
.
Enter this keyword/variable combination twice, identifying the two LAGs to
be paired.