Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 861
Important Points to Remember, Networking OS
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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 67. Extended Gateway Summary IP SA IP DA static/ connected/IGP static/ connected/IGP srcAS and srcPeerAS - static/ BGP 0 connected/IGP BGP static/ connected/IGP - Exported dstAS and dstPeerAS - Exported - 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 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 sFlow 861
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