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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, the
interface reverts to its configuration prior to joining the Port Channel.
An interface can belong to only one Port Channel.
You can add up to 16 interfaces to a Port Channel on the switch. The interfaces can be located on
different line cards 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; disable and re-enable the Port Channel or change the order of the channel members
configuration to change the designated speed. 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; disable and re-enable the Port Channel
or change the order of the channel members configuration to change the designated speed. For more
information about Port Channels, refer to the Dell Networking OS Configuration Guide.
Related
Commands
interface port-channel — creates a Port Channel interface.
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
group_number Enter an integer from 1 to 32 that uniquely identifies this LAG fate-sharing group.
port-channel
number
Enter the keywords port-channel then an existing LAG number. Enter this
keyword/variable combination twice, identifying the two paired LAGs.
Defaults none
Command Modes PORT-CHANNEL FAILOVER-GROUP (conf-po-failover-grp)
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the M I/O Aggregator.
Example
Dell(conf)#port-channel failover-group
Dell(conf-po-failover-grp)#group 1 port-channel 1 port-channel 2
Dell(conf-po-failover-grp)#
Related
Commands
port-channel failover-group — accesses PORT-CHANNEL FAILOVER-GROUP mode to configure a LAG
failover group.
show interfaces port-channel — displays information on configured Port Channel groups.
518 Interfaces