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Netflow in one direction on 6500's

There was a similar post but no configs were posted.

I am collecting netflow data from 6500's and 3845's. The 3845's are sending netflow from inbound and outbound on the interfaces.

The 6500's are inbound only. The configuration is much the same so it must be something deeper than that.

Here is the 6500 config that is the same on the 3845's

interface Vlan32
 description VOICE
 bandwidth 1000000
 ip address 10.20.32.3 255.255.248.0
 ip access-group VOICE_32_ACL_IN in
 ip helper-address x.20.120.101
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip flow ingress
 ip flow egress
 standby 32 ip x.20.32.1
 standby 32 timers msec 300 1
 standby 32 priority 255
 standby 32 preempt
 standby 32 authentication md5 key-string 

 no mop enabled


mls ip slb purge global
mls netflow interface
no mls flow ip
no mls flow ipv6
no mls qos rewrite ip dscp
mls qos marking ignore port-trust
mls qos
no mls rate-limit unicast acl vacl-log
mls cef error action reset

mls netflow interface
ip flow-export source Loopback0
ip flow-export version 5
ip flow-export destination x.x.120.120 9996

Does anyone have any ideas why this is please?

 

Sam