Configuring Etherchannel And Link State Tracking - Cisco Catalyst 4500 series Administration Manual

Configuring EtherChannel and Link State
Tracking
Supervisor 6-E, Supervisor 6L-E, Catalyst 4900M, and Catalyst 4948-E do not support hw CoPP for all
Note
IPv6 First Hop Security Features (DHCPv6 Inspection/Guard, DHCPv6 remote-ID option for Layer 2,
IPv6 "full" RA Guard, ...) over EtherChannel. If these features are applied either directly to
EtherChannel interface, on ports in the EtherChannel, or over a VLAN to which EtherChannel belongs,
they will not work.
This chapter describes how to use the command-line interface (CLI) to configure EtherChannel on the
Catalyst 4500 series switch Layer 2 or Layer 3 interfaces. It also provides guidelines, procedures, and
configuration examples.
EtherChannel provides automatic recovery for the loss of a link by redistributing the load across the
remaining links. If a link fails, EtherChannel redirects traffic from the failed link to the remaining links
in the channel without intervention. This chapter also describes how to configure link-state tracking.
This chapter includes the following major sections:
• About EtherChannel, page 26-2
• EtherChannel Configuration Guidelines and Restrictions, page 26-5
Configuring EtherChannel, page 26-6
•
Displaying EtherChannel to a Virtual Switch System, page 26-16
•
Understanding Link-State Tracking, page 26-18
•
Configuring Link-State Tracking, page 26-21
•
The commands in the following sections can be used on all Ethernet interfaces on a Catalyst 4500 series
Note
switch, including the uplink ports on the supervisor engine.
For complete syntax and usage information for the switch commands used in this chapter, see the Cisco
Note
Catalyst 4500 Series Switch Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/hw/switches/ps4324/index.html
If a command is not in the Catalyst 4500 Series Switch Command Reference, you can locate it in the
OL_28731-01
C H A P T E R
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
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26-1