Cisco 10000-2P2-2DC Software Guide - Page 539
Configuration Tasks
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Chapter 23 Configuring Gigabit EtherChannel Features Configuring VLAN-Based Load Balancing • When LACP max-bundle is used with VLAN-based load balancing, user needs to verify whether both primary and secondary member-links for a VLAN sub-interface are not selected as standby links by the LACP protocol. • Either of the Flow-based Load-balancing feature or VLAN-based Load Balancing feature for a GEC bundle is supported. The Flow and VLAN-based Load Balancing can co-exist on the same router, if they are selected for different GEC bundles. • VLAN-based load balancing for QinQ sub-interfaces is not supported. • Per VLAN bandwidth allocation cannot be more than 1 Gbps. • Per VLAN group bandwidth allocation cannot be more than 1 Gbps. • BRR can work only on a per member-link basis. • PPPoX and IP/DHCP session are not supported. • QoS on member-links is not supported. • 1:N mode is not supported, only M:N mode is supported. • The Link-switchover time depends on the carrier-delay configured on the member links and for VLAN-based load balancing the switchover time is expected to be same as flow-based load balancing. • Because the HQF hierarchy for a VLAN subinterface on the GEC bundle is programmed on both primary and secondary member-links, the HQF-related resources, such as class queues, and the logical BLTs usage, would double and therfore, reduce the scalability of the QoS. • If the member-link corresponding to the VLAN is not over-subscribed, there is no impact on the traffic of other VLANs, when new VLANs are added on the functional port channel. • With the VLAN group QoS feature, the class queues are created on all the member links. The scalability of QoS reduces as the class queues are allocated from the same pool. Configuration Tasks To configure the VLAN-based Load Balancing feature on a GEC bundle, enter the following commands: Step 1 Step 2 Command router(config)# interface port-channel number router(config-if)# load-balancing vlan Step 3 router(config-if)# lacp max-bundle 1-8 Step 4 router(config-if)# lacp min-link 1-8 Step 5 router(config)# interface interface Step 6 Step 7 router(config-if)# channel-group 1-64 [mode {active|passive}] router(config)# interface port-channel subinterface Purpose Creates a GEC bundle. Enables the VLAN-based Load Balancing feature on the GEC bundle. 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. Selects an GigabitEthernet interface to configure and enters config-if mode. Configures the member link so that it can be added to the port channel interface. Creates a GEC bundle subinterface and enters the subinterface mode. OL-2226-23 Cisco 10000 Series Router Software Configuration Guide 23-13
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