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6-15
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
OL-23435-03
Chapter 6 Configuring Port Channels
Default Settings
• STP computes the cost of a port-channel based on the aggregated bandwidth of the configured port
members. With NX-OS, this cost is not updated dynamically based on the operational state of those
port channel members.
• After you configure a port channel, the configuration that you apply to the port-channel interface
affects the port-channel member ports. The configuration that you apply to the member ports affects
only the member port where you apply the configuration.
• LACP does not support half-duplex mode. Half-duplex ports in LACP port channels are put in the
suspended state.
• You must remove the port-security information from a port before you can add that port to a port
channel. Similarly, you cannot apply the port-security configuration to a port that is a member of a
channel group.
• Do not configure ports that belong to a port-channel group as private VLAN ports. While a port is
part of the private VLAN configuration, the port channel configuration becomes inactive.
• Channel member ports cannot be a source or destination SPAN port.
• You cannot configure the ports from a F1 and an M1 series linecard in the same port channel because
the ports will fail to meet the compatibility requirements.
• Beginning with Cisco NX-OS Release 5.1, you can bundle up to 16 active links into a port channel
on the F1 series linecard.
Default Settings
Table 6-3 lists the default settings for port-channel parameters.
Configuring Port Channels
This section includes the following topics:
• Creating a Port Channel, page 6-16
• Adding a Layer 2 Port to a Port Channel, page 6-17
Table 6-3 Default Port-Channel Parameters
Parameters Default
Port channel Admin up
Load balancing method for Layer 3 interfaces Source and destination IP address
Load balancing method for Layer 2 interfaces Source and destination MAC address
Load balancing per module Disabled
LACP Disabled
Channel mode on
LACP system priority 32768
LACP port priority 32768
Minlinks 1
Maxbundle 16