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Cisco2821 - ip flow top talkers = cache is empty

aandrews
Level 1
Level 1

Hi Everyone,

I've been fighting an issue with a 2821 router for some time now. I'm trying to pull the top talkers from an interface, however the cache is empty. I verified the configuration with a known working 2821 and the output for the interfaces are the same. Any help would be greatly appreciated!

 

NON-WORKING:::

interface GigabitEthernet0/0
 description P2P Comcast NLAN to ENET
 ip address 10.103.2.6 255.255.255.0
 ip flow ingress
 ip flow egress
 duplex full
 speed 100
!
interface GigabitEthernet0/1
 description connect to JDR_3560_2
 ip address 10.200.12.1 255.255.255.0
 duplex auto
 speed auto
!
interface Serial0/1/0
 no ip address
 shutdown
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0
no ip http server
no ip http secure-server
!
ip flow-cache timeout active 1
ip flow-export source GigabitEthernet0/0
ip flow-export version 5
ip flow-export destination 10.100.1.58 2055
ip flow-top-talkers
 top 25
 sort-by bytes
!
!
logging 10.100.1.17
logging 10.100.1.119

 

WORKING CONFIG:

interface GigabitEthernet0/0
 description Comcast MetroEthernet  CID: 54.VLXP.006454.CPLC
 ip address 10.103.2.5 255.255.255.0
 ip flow ingress
 ip flow egress
 ip pim sparse-dense-mode
 ip igmp query-interval 125
 duplex full
 speed 100
 service-policy output WAN-EDGE

ip flow-cache timeout active 1
ip flow-export source GigabitEthernet0/0
ip flow-export version 5
ip flow-export destination 10.100.6.111 2055
ip flow-export destination 10.100.1.58 2055
ip flow-top-talkers
 top 30
 sort-by bytes
!
ip mroute 0.0.0.0 0.0.0.0 10.103.2.240
!
logging 10.100.1.17
logging 10.100.1.40
logging 10.100.1.119

 

3 Replies 3

Dan Lukes
VIP Alumni
VIP Alumni

Off-topic in Feedback Forum. Moved to more apropriate one.

 

First time using this. thanks Dan

e.ciollaro
Level 4
Level 4

Hi,

I'm not a Netflow expert by let's try; config seems to be correct, could you post the output of

sh ip flow export

sh ip flow top-talker

sh ver

 

enrico