Service Manual

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 have 16 interfaces per Port Channel on the S-Series and Z-Series. The interfaces can be located
on different line cards but must be the same physical type and speed (for example, all 1-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
description — assigns a descriptive text string to the interface.
interface port-channel — creates a Port Channel interface.
shutdown — disables/enables the port channel.
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)
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
Interfaces 683