Lacp Fast-Switchover - Dell Z9500 Reference Manual

Usage
With the introduction of various overlay technologies such as network virtualization
Information
using generic routing encapsulation (NVGRE) segments and Routable Remote
Direct Memory Access (RRDMA) over Converged Ethernet (RRoCE), information
related to a traffic flow is contained in the L4 header. The fields in the L2 and L3
headers are not sufficient to distinguish the flows. Therefore, the fields in the L4
header are processed when hashing is performed on packets over LAG and ECMP
links. The Flex hash functionality enables you to configure a packet search key and
matches packets based on the search key. When a packet matches the search key,
two 16-bit hash fields are extracted from the start of the L4 header and provided as
inputs (bins 2 and 3) for RTAG7 hash computation. You must specify the offset of
hash fields from the start of the L4 header, which contains a flow identification
field.
You can cause the system to include the fields present at the offsets that you
define (from the start of the L4 header) as a part of LAG and ECMP computation.
Also, you can specify whether the IPv4 or IPv6 packets are processed with the Flex
hash functionality.
Example
Dell(conf)# load-balance flexhash ipv4 ip-proto 1 desc offset1
1 offset2 2

lacp fast-switchover

Cause the physical ports to be aggregated faster by configuring this capability in a port-channel on both
the nodes that are members of a port-channel.
Syntax
lacp fast-switchover
To disable the capability of faster aggregation of the member ports of a LAG or a
port-channel bundle, use the no version of this command.
Defaults Not configured
Command INTERFACE (conf-if-po-number)
Modes
Command
Version 9.3(0.0)
History
Usage You can configure the optimal switchover functionality for LACP even if you do not
Information enable the fast boot mode on the system. You must configure the long timeout
mechanism for the LACP session to enable the fast boot capability to operate
properly. This 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.
728
Introduced on the S6000.
Flex Hash