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Netflow: Data is not available

Netflow is configured and working throughout the network but there is on interface that isn't showing me any details as you can see from the screenshot. These stats show up just fine for other interfaces on this same router.

The interface is being used to source a tunnel. Here is the configuration. Is there anything here that might block netflow?

interface GigabitEthernet0/0

description //TACLANE PT GW//

bandwidth 40000

ip address [redacted] 255.255.255.252

no ip redirects

no ip unreachables

no ip proxy-arp

ip nbar protocol-discovery

ip flow ingress

duplex auto

speed auto

media-type rj45

no cdp enable

service-policy input DISCOVERY

service-policy output SHAPING

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Accepted answers

All comments

rharland2012

Not sure on this one, but do your working interfaces have 'ip route-cache flow' command on them?

FormerMember

'ip route-cache flow' doesn't show up on any of the working interfaces either.

choly

Brian,

This may happen if the interface is sending too little data to be worth storing compared to others. Please try to temporarily (couple hours) set NetFlow settings > Top Talker Optimization: from 95 to 99 or 100%. This will force NTA store even small flows, check if you will see data on that interface.

If yes, you can keep the setting, however you will be processing and storing much more data (e.g. 5-10x as much), so make sure you have enough space.

If not, set the setting back to 95 and let us know.

Ondrej