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• Description
• CDP
• LACP port priority
• Debounce
After you enable forcing a port to be added to a channel group by entering the channel-group force command,
the following two conditions occur:
• When an interface joins a port channel the following parameters are removed and they are operationally
replaced with the values on the port channel; however, this change will not be reflected in the
running-configuration for the interface:
• QoS
• Bandwidth
• Delay
• STP
• Service policy
• ACLs
• When an interface joins or leaves a port channel, the following parameters remain unaffected:
• Beacon
• Description
• CDP
• LACP port priority
• Debounce
• UDLD
• Shutdown
• SNMP traps
Load Balancing Using Port Channels
Cisco NX-OS load balances traffic across all operational interfaces in a port channel by reducing part of the
binary pattern formed from the addresses in the frame to a numerical value that selects one of the links in the
channel. Port channels provide load balancing by default.
The basic configuration uses the following criteria to select the link:
• For a Layer 2 frame, it uses the source and destination MAC addresses.
• For a Layer 3 frame, it uses the source and destination MAC addresses and the source and destination
IP addresses.
Cisco Nexus 5000 Series NX-OS Interfaces Configuration Guide, Release 5.2(1)N1(1)
48 78-26881-OL
Configuring Port Channels
Load Balancing Using Port Channels