Dell S4820T User Manual

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)#show sflow
sFlow services are enabled
Egress Management Interface sFlow services are disabled
Global default sampling rate: 32768
Global default counter polling interval: 86400
Global default extended maximum header size: 256 bytes
Global extended information enabled: none
1 collectors configured
Collector IP addr: 100.1.1.12, Agent IP addr: 100.1.1.1, UDP port: 6343 VRF:
Default
0 UDP packets exported
0 UDP packets dropped
0 sFlow samples collected
Example of viewing the sflow max-header-size extended on an Interface Mode
Dell#show sflow interface tengigabitethernet 1/1
Te 1/1
sFlow type :Ingress
Configured sampling rate :16384
Actual sampling rate :16384
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 100.1.1.12 agent-addr 100.1.1.1
sflow enable
sflow max-header-size extended
Dell#show run int tengigabitEthernet 1/10
!
interface TenGigabitEthernet 1/10
no ip address
switchport
sflow ingress-enable
sflow max-header-size extended
no shutdown
sFlow
919

Dell S4820T Specifications

General

Brand	Dell
Model	S4820T
Category	Switch
Language	English