Compatibility Requirements - Cisco 7604-RSP720C-R Configuration Manual

Chapter 6 Configuring Port Channels
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m
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Compatibility Requirements

When you add an interface to a channel group, the software checks certain interface attributes to ensure
that the interface is compatible with the channel group. For example, you cannot add a Layer 3 interface
to a Layer 2 channel group. The Cisco DC-OS software also checks a number of operational attributes
for an interface before allowing that interface to participate in the port-channel aggregation.
The compatibility check includes the following operational attributes:
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Use the show port-channel compatibility-parameters command to see the full list of compatibility
checks that the Cisco DC-OS uses.
You can only add interfaces configured with the channel mode set to on to static port channels, and you
can only add interfaces configured with the channel mode as active or passive to port channels that are
running LACP. You can configure these attributes on an individual member port. If you configure a
member port with an incompatible attribute, the software suspends that port in the port channel.
Alternatively, you can force ports with incompatible parameters to join the port channel if the following
parameters are the same:
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OL-23435-03
Shutdown
Speed
Network layer
(Link) speed capability
Speed configuration
Duplex capability
Duplex configuration
Port mode
Access VLAN
Trunk native VLAN
Tagged or untagged
Allowed VLAN list
MTU size
SPAN—cannot be a SPAN source or a destination port
Layer 3 ports—cannot have subinterfaces
Storm control
Flow-control capability
Flow-control configuration
(Link) speed capability
Speed configuration
Duplex capability
Duplex configuration
Flow-control capability
Flow-control configuration
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
Information About Port Channels
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