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Dell Configuration Guide for the S4048–ON System 9.14.2.6

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Enabling Extended sFlow

Extended sFlow packs additional information in the sFlow datagram depend on the type of sampled packet. The platform supports extended-switch information processing only.

Extended sFlow packs additional information in the sFlow datagram depending on the type of sampled packet. You can enable the following options:
  • extended-switch — 802.1Q VLAN ID and 802.1p priority information.
  • extended-router — Next-hop and source and destination mask length.
  • extended-gateway — Source and destination AS number and the BGP next-hop.
NOTE The entire AS path is not included. BGP community-list and local preference information are not included. These fields are assigned default values and are not interpreted by the collector.
  • Enable extended sFlow.
    sflow [extended-switch] [extended-router] [extended-gateway] enable
    By default packing of any of the extended information in the datagram is disabled.
  • Confirm that extended information packing is enabled.
    show sflow

Examples of Verifying Extended sFlow

The bold line shows that extended sFlow settings are enabled on all three types.

DellEMC#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: 128 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
0 UDP packets dropped
0 sFlow samples collected

stack-unit 1 Port set 0
  Te 1/1: configured rate 16384, actual rate 16384   
DellEMC#

If you did not enable any extended information, the show output displays the following (shown in bold).

DellEMC#show sflow
sFlow services are disabled
Global default sampling rate: 32768
Global default counter polling interval: 20
Global extended information enabled: none
0 collectors configured
0 UDP packets exported
0 UDP packets dropped
0 sFlow samples collected
0 sFlow samples dropped due to sub-sampling

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