Cisco 10000-2P2-2DC Software Guide - Page 540
Configuration Example, Configuration Example of VLAN-Based Load Balancing
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Configuring VLAN-Based Load Balancing Chapter 23 Configuring Gigabit EtherChannel Features Step 8 Command router(config-subif)# encapsulation dot1Q vlan-id primary member-link secondary member-link Step 9 router(config-subif)# end Purpose Enables IEEE 802.1Q encapsulation of traffic on a specified subinterface in a VLAN. Specify the VLAN identifier, primary and secondary links. Note The primary and secondary links must be a part of the port channel so that traffic can be forwarded to these links. If any of primary or secondary links are not part of the port channel at any state, the VLAN sub-interface gets in a suspended state and traffic is not forwarded. Exits to the global configuration mode. Note The primary and secondary links must be configured. If primary and secondary links are not specified during the configuration of the VLAN-based Load Balancing feature, by default, the primary and secondary links are selected. When default links are chosen, equal VLAN distribution across links does not occur. If only a primary link is specified, by default, a secondary link that is different than the specified primary is selected. The system allows the user to see the type of port channel load-balancing method that is enabled, using the show ether-channel load-balancing command. The output of the show vlans command displays information such as the mapping of VLANs, the member link (primary or secondary) that is currently used by the traffic for a given VLAN, and the VLANs for which a given member-link is active. Note The port-channel load-balancing vlan-manual command applies the VLAN-manual load-balancing method globally to all GEC interfaces. Configuration Example This section provides the following configuration examples: • Configuration Example of VLAN-Based Load Balancing, page 23-14 • Configuration Example for Applying VLAN QoS on GEC Bundle Subinterfaces, page 23-15 • Configuration Example for Using the VLAN Group Feature to Apply QoS, page 23-16 Note When service policy is applied to port channel's main or subinterface, changing the load balancing mode from VLAN to flow is not supported. Configuration Example of VLAN-Based Load Balancing Example 23-5 shows how to configure the VLAN-based Load Balancing feature on a GEC subinterface: 23-14 Cisco 10000 Series Router Software Configuration Guide OL-2226-23
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