Dell C9000 Line Cards Networking Configuration Guide for the C9000 Series Vers - Page 415
LACP Fast Switchover, Configuring LACP Fast Switchover, LACP
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When load balancing RRoCE packets using flex hash is enabled, the show ip flow command is disabled. Similarly, when the show ip flow command is in use (ingress port-based load balancing is disabled), the hashing of RRoCE packets is disabled. Flex hash APIs do not mask out unwanted byte values after extraction of the data from the Layer 4 headers for the offset value. 2. Use the load-balance flexhash command to specify whether IPv4 or IPv6 packets must be subjected to the flex hash functionality, a unique protocol number, the offset of hash fields from the start of the L4 header to be used for hash calculation, and a meaningful description to associate the protocol number with the name. CONFIGURATION mode Dell(conf)# load-balance flexhash ipv4/ipv6 ip-proto offset1 [offset2 ] To delete the configured flex hash setting, use the no version of the command. LACP Fast Switchover LACP Fast Switchover causes the physical ports to be aggregated faster when configured in a portchannel on both the nodes that are members of a port-channel. When LACP 'fast-switchover' is enabled on the system, two optimizations are performed to the LACP behavior: • The wait-while timer is not started in the 'waiting' state of the MUX state machine. The port moves directly to the 'attached' state. • The local system moves to the 'collecting' and 'distributing' states on the port in a single step without waiting for the partner to set the 'collecting' bit. Configuring LACP Fast Switchover To configure the optimized booting time functionality, perform the following step: • The lacp fast-switchover command applies to dynamic port-channel interfaces only. When applied on a static port-channel, this command has no effect. If you configure the optimized bootingtime capability and perform a reload of the system, the LACP application sends PDUs across all the active LACP links immediately. INTERFACE (conf-if-po-number) mode Dell(conf-if-ponumber)#lacp fast-switchover LACP LACP Fast Switchover When LACP 'fast-switchover' is enabled on the system, two optimizations are performed to the LACP behavior: • The wait-while timer is not started in the 'waiting' state of the MUX state machine. The port moves directly to the 'attached' state. Flex Hash and Optimized Boot-Up 415
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