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Chapter 23
Configuring Gigabit EtherChannel Features
Configuring High Availability Support on GEC Bundle
The following high availability features are supported on GEC bundle interfaces, on the Cisco 10000
Series router.
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The EtherChannel and the IEEE 802.3ad LACP protocol are SSO and ISSU aware. This feature makes
the GEC bundle interface available after a PRE switchover, in the event of a catastrophic failure.
For more information on NSF, see Cisco Nonstop Forwarding whitepaper at:
http://www.cisco.com/en/US/docs/ios/12_2s/feature/guide/fsnsf20s.html
For information on SSO see, Stateful Switchover feature guide at:
http://www.cisco.com/en/us/docs/ios/12_2s/feature/guide/fssso20s.html
For more information on ISSU, see Cisco IOS In Service Software Upgrade and Enhanced Fast Software
Upgrade Process feature guide, at:
http://www.cisco.com/en/US/docs/ios/12_2sb/feature/guide/sb_issu.html
Configuring 8 Member Links per GEC Bundle
A maximum of 8 configured member links per GEC bundle and 64 port channels are supported on the
Cisco 10000 Series router. The number of member links per GEC bundle has been increased from 4 to
8 in the Cisco IOS Release 12.2(15)BX.
Configuration Tasks
The following table lists the configuration commands used to configure the maximum and minimum
links on a GEC bundle on a Cisco 10000 Series router.
Command
router(config-if)# lacp max-bundle 1–8
router(config-if)# lacp min-link 1–8
router(config-if)# lacp fast-switchover
For more information on configuring member links, see the Link Aggregation Control Protocol (LACP)
(802.3ad) for Gigabit Interfaces feature guide at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122sb/newft/122sb31/10gigeth.htm
OL-2226-23
Stateful Switchover (SSO)
In Service Software Upgrade (ISSU))
Nonstop Forwarding (NSF)
Nonstop Routing (NSR)
Configuring High Availability Support on GEC Bundle
Purpose
Assigns the maximum number of links per bundle.
The default value is 8.
Sets the minimum number of active links required
before declaring the port channel interface down.
The default value is 1.
Reduces the switchover time from 2 seconds to
10ms. By default lacp fast-switchover
configuration is not enabled.
Cisco 10000 Series Router Software Configuration Guide
23-11
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Troubleshooting
