Deployment Guide

Table Of Contents
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 105. 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 because
there is no AS
information.
static/connected/IGP BGP 0 Exported src_as and src_peer_as
are zero because there
is no AS information for
IGP.
BGP static/connected/IGP
Exported
Exported
Prior to Dell EMC
Networking OS version
7.8.1.0, extended
gateway data is not
exported because IP DA
is not learned via BGP.
Version 7.8.1.0 allows
extended gateway
information in cases
where the source
and destination IP
addresses are learned
by different routing
protocols, and for cases
where is source is
reachable over ECMP.
BGP BGP Exported Exported Extended gateway data
is packed.
828 sFlow