Dell Force10 S4810P, Reference Manual

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You cannot add an interface to a Port Channel if the interface contains an IP address in its
configuration. Only the
shutdown
,
description
,
mtu
, and
ip mtu
commands can be
configured on an interface if it is to be added to a Port Channel. The
mtu
and
ip mtu
commands are only available when the chassis is in Jumbo mode.
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.
On the E-Series TeraScale, you can add up to 16 interfaces to a Port Channel; E-Series
ExaScale can add up to 64. You can have eight interfaces per Port Channel on the C-Series and
S-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; you must 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; you must 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
FTOS 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”).
C-Series, E-Series, S-Series, Z-Series, S4810
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.
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