Important Points To Remember - Dell S4820T Configuration Manual

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 0 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 72. Extended Gateway Summary
IP SA IP DA
static/ static/
connected/IGP connected/IGP
static/ BGP
connected/IGP
BGP static/
connected/IGP
882
srcAS and dstAS and
srcPeerAS dstPeerAS
— —
0 Exported
— —
Description
Extended gateway
data is not
exported because
there is no AS
information.
src_as and
src_peer_as are
zero because there
is no AS
information for
IGP.
Prior to Dell
Networking OS
sFlow