Reference Guide

Enabling sFlow Max-Header Size Extended
To configure the maximum header size of a packet to 256 bytes, use the following commands:
• Set the maximum header size of a packet.
CONFIGURATION mode
INTERFACE mode
sflow max-header-size extended
By default, the maximum header size of a packet is 128 bytes. When sflow max-header-size
extended
is enabled, 256 bytes are copied. These bytes are useful for VxLAN, NvGRE, IPv4, and IPv6
tunneled packets.
NOTE: Interface mode configuration takes priority.
• To reset the maximum header size of a packet, use the following command
[no] sflow max-header-size extended
• View the maximum header size of a packet.
show running-config sflow
Example of the show sflow command when the sflow max-header-size extended is configured
globally
Dell(conf-if-te-1/10/1)#show sflow
sFlow services are enabled
Egress Management Interface sFlow services are disabled
Global default sampling rate: 32768
Global default counter polling interval: 20
Global default extended maximum header size: 256 bytes
Global extended information enabled: none
1 collectors configured
Collector IP addr: 100.1.1.1, Agent IP addr: 1.1.1.2, UDP port: 6343 VRF:
Default
0 UDP packets exported
11 UDP packets dropped
0 sFlow samples collected
stack-unit 1 Port set 0
Hu 1/29: configured rate 131072, actual rate 131072
Example of viewing the sflow max-header-size extended on an Interface Mode
Dell#show sflow interface hundredgigabitethernet 1/29
Hu 1/29
sFlow type :Ingress
Configured sampling rate :131072
Actual sampling rate :131072
Counter polling interval :20
Extended max header size :256
Samples rcvd from h/w :0
Example of the show running-config sflow Command
Dell#show running-config sflow
!
sflow collector 100.1.1.1 agent-addr 1.1.1.2
810
sFlow