CLI Guide

Command History
Version Description
9.8(1.0) Introduced on the Z9100–ON.
9.3(0.0) Introduced on the S6000 platform.
9.2(1.0) Introduced on the Z9500.
Usage Information
With the introduction of various overlay technologies such as network virtualization
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 for 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 must be operated with the
Flex Hash mechanism.
Example
Dell(conf)# load-balance flexhash ipv4 ip-proto 1 desc offset1
1 offset2 2
reload-type fastboot
Restart the system with optimized booting-time functionality enabled. When you restart the device in fast
boot mode, traffic disruption is reduced significantly and the system operations to service the data traffic
are restored in a seamless way.
C9000 Series
Syntax
reload-type fastboot
Parameters
fastboot Enable the system to restart the next time with the
optimized booting-time capability
Defaults By default, the device reloads in Jumpstart or BMP mode.
Command Modes GLOBAL CONFIGURATION
600
Flex Hash and Optimized Boot-Up