Cisco N7K-C7010 Configuration Guide - Page 164

LACP, LACP Overview

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Information About Port Channels Chapter 6 Configuring Port Channels Send document comments to [email protected] • Multicast traffic without Layer 4 information-Source IP address, destination IP address • Non-IP multicast traffic-Source MAC address, destination MAC address Note Devices that run Cisco IOS were able to optimize the behavior of the member ports ASICs if a failure of a single member occurred by running the port-channel hash-distribution command. The Cisco Nexus 7000 Series device performs this optimization by default and does not require or support this command. Cisco NX-OS does support the customization of the load-balancing criteria on port channels through the port-channel load-balance command, either for the entire device or on a per-module basis. See the Cisco Nexus 7000 Series NX-OS Interfaces Command Reference, Release 5.x, for information on this command. LACP LACP allows you to configure up to 16 interfaces into a port channel. A maximum of 8 interfaces can be active, and a maximum of 8 interfaces can be placed in a standby state on the M Series modules. Beginning with Cisco NX-OS Release 5.1, you can bundle up to 16 active links into a port channel on the F Series module. This section includes the following topics: • LACP Overview, page 6-8 • Port-Channel Modes, page 6-9 • LACP ID Parameters, page 6-10 • LACP Marker Responders, page 6-11 • LACP-Enabled and Static Port Channels Differences, page 6-11 • LACP Compatibility Enhancements, page 6-12 • LACP Port-Channel MinLinks and MaxBundle, page 6-12 • LACP Offload to Fabric Extenders, page 6-13 • LACP Fast Timers, page 6-13 LACP Overview Note You must enable LACP before you can use LACP. By default, LACP is disabled. See the "Enabling LACP" section on page 6-29 for information on enabling LACP. Beginning in Cisco NX-OS Release 4.2, the system automatically takes a checkpoint before disabling the feature, and you can roll back to this checkpoint. See the Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x, for information on rollbacks and checkpoints. Figure 6-2 shows how individual links can be combined into LACP port channels and channel groups as well as function as individual links. Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x 6-8 OL-23435-03

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Send document comments to [email protected]
6-8
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
OL-23435-03
Chapter 6
Configuring Port Channels
Information About Port Channels
•
Multicast traffic without Layer 4 information—Source IP address, destination IP address
•
Non-IP multicast traffic—Source MAC address, destination MAC address
Note
Devices that run Cisco IOS were able to optimize the behavior of the member ports ASICs if a failure
of a single member occurred by running the
port-channel hash-distribution
command. The Cisco
Nexus 7000 Series device performs this optimization by default and does not require or support this
command. Cisco NX-OS does support the customization of the load-balancing criteria on port channels
through the
port-channel load-balance
command, either for the entire device or on a per-module basis.
See the
Cisco Nexus 7000 Series NX-OS Interfaces Command Reference, Release 5.x
, for information on
this command.
LACP
LACP allows you to configure up to 16 interfaces into a port channel. A maximum of 8 interfaces can
be active, and a maximum of 8 interfaces can be placed in a standby state on the M Series modules.
Beginning with Cisco NX-OS Release 5.1, you can bundle up to 16 active links into a port channel on
the F Series module.
This section includes the following topics:
•
LACP Overview, page 6-8
•
Port-Channel Modes, page 6-9
•
LACP ID Parameters, page 6-10
•
LACP Marker Responders, page 6-11
•
LACP-Enabled and Static Port Channels Differences, page 6-11
•
LACP Compatibility Enhancements, page 6-12
•
LACP Port-Channel MinLinks and MaxBundle, page 6-12
•
LACP Offload to Fabric Extenders, page 6-13
•
LACP Fast Timers, page 6-13
LACP Overview
Note
You must enable LACP before you can use LACP. By default, LACP is disabled.
See the
“Enabling LACP” section on page 6-29
for information on enabling LACP.
Beginning in Cisco NX-OS Release 4.2, the system automatically takes a checkpoint before disabling
the feature, and you can roll back to this checkpoint. See the
Cisco Nexus 7000 Series NX-OS System
Management Configuration Guide, Release 5.x
, for information on rollbacks and checkpoints.
Figure 6-2
shows how individual links can be combined into LACP port channels and channel groups as
well as function as individual links.