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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 booting-time
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-po-number)#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.
•
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.
RDMA Over Converged Ethernet (RoCE)
Overview
Remote direct memory access (RDMA) is a technology that a virtual machine (VM) uses to directly transfer
information to the memory of another VM, thus enabling VMs to be connected to storage networks. With
RDMA over converged Ethernet (RoCE), RDMA enables data to be forwarded without passing through the
CPU and the main memory path of TCP/IP. In a deployment that contains both the RoCE network and the
normal IP network on two different networks, routable RoCE (RRoCE) combines the RoCE and the IP
networks and sends the RoCE frames over the IP network. RRoCE transmission results in the encapsulation of
RoCE packets in IP packets.
RRoCE packets are received and transmitted on specific interfaces called lite-subinterfaces. These interfaces
are similar to the normal Layer 3 physical interfaces except for the extra provisioning that they offer to enable
the VLAN ID for encapsulation.
You can configure a physical interface or a Layer 3 Port Channel interface as a lite subinterface. When you
configure a lite subinterface, only tagged IP packets with VLAN encapsulation are processed and routed. All
other data packets are discarded.
Flex Hash and Optimized Boot-Up
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Troubleshooting
