Dell S4048T, Configuration Manual

Page: 977 / 1277

Examples of Verifying Extended sFlow
The bold line shows that extended sFlow settings are enabled on all three types.
Dell#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
Dell#
If you did not enable any extended information, the show output displays the following (shown in bold).
Dell#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
Important Points to Remember
• To export extended-gateway data, BGP must learn the IP destination address.
• If the IP destination address is not learned via BGP the Dell Networking system does not export
extended-gateway data.
• If the IP source address is learned via IGP, srcAS and srcPeerAS are zero.
• The srcAS and srcPeerAS might be zero even though the IP source address is learned via BGP. The c
system packs the srcAS and srcPeerAS information only if the route is learned via BGP and it is reachable
via the ingress interface of the packet.
• The sFlow sampling functionality is supported only for egress traffic and not for ingress traffic.
The previous points are summarized in following table.
Table 83. Extended Gateway Summary
IP SA IP DA srcAS and
srcPeerAS
dstAS and
dstPeerAS
Description
static/
connected/IGP static/
connected/IGP — — Extended gateway
data is not exported
sFlow 977