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Community Member

Netflow on 6506-E with Sup 720 and IOS 12.2(18)SXF8

Hi Guys,

I am running many switches with identical hardware, IOS level and Netflow configuration. they are all working, except the last unit configured.

The last units is configured as bellow. Some interfaces are reporting Netflow and some not. The ones configured with netflow are not reporting and some of the interfaces not configured are reporting - not all.

All to the same Netflow Server. I tried pretty much everything but no luck. Clearing the netflow table, deleteing and re-entering netflow configuration.

Any clues?

interface vlan 10

ip route-cache flow

no mls netflow sampling

no ip flow ingress

mls netflow

mls flow ip interface-full

no mls flow ipv6

mls nde sender version 5

mls qos

mls verify ip length minimum

no mls acl tcam share-global

mls cef error action freeze

ip flow-export source Loopback0

ip flow-export version 5

ip flow-export destination 1.1.1.1 9996

router#show mls netflow table-contention det

Earl in Module 5

Detailed Netflow CAM (TCAM and ICAM) Utilization

================================================

TCAM Utilization : 40%

ICAM Utilization : 0%

Netflow TCAM count : 52505

Netflow ICAM count : 0

Netflow Creation Failures : 0

Netflow CAM aliases : 0

router#show ip flow export

Flow export v5 is enabled for main cache

Exporting flows to 1.1.1.1 (9996)

Exporting using source interface Loopback0

Version 5 flow records

1937762 flows exported in 64593 udp datagrams

0 flows failed due to lack of export packet

0 export packets were sent up to process level

0 export packets were dropped due to no fib

0 export packets were dropped due to adjacency issues

0 export packets were dropped due to fragmentation failures

0 export packets were dropped due to encapsulation fixup failures

0 export packets were dropped enqueuing for the RP

0 export packets were dropped due to IPC rate limiting

1 ACCEPTED SOLUTION

Accepted Solutions
Silver

Re: Netflow on 6506-E with Sup 720 and IOS 12.2(18)SXF8

Is ip cef enabled globally?

Then I would add the following to my config. To put the interface and routing information into the NetFlow Exports:

mls nde interface

mls flow ip interface-full

To break up long flows into roughly 1 minute segments:

mls aging long 64

Export the finished flows in a timely manner.

mls aging normal 32

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/nde.html

HTH

Steve

3 REPLIES
Silver

Re: Netflow on 6506-E with Sup 720 and IOS 12.2(18)SXF8

Is ip cef enabled globally?

Then I would add the following to my config. To put the interface and routing information into the NetFlow Exports:

mls nde interface

mls flow ip interface-full

To break up long flows into roughly 1 minute segments:

mls aging long 64

Export the finished flows in a timely manner.

mls aging normal 32

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/nde.html

HTH

Steve

Community Member

Re: Netflow on 6506-E with Sup 720 and IOS 12.2(18)SXF8

This is something new, the other 6500 do not need the command bellow for Netflow to work. I added this command and now works perfectly.

mls nde interface

Thanks guys.

Regards

Bronze

Re: Netflow on 6506-E with Sup 720 and IOS 12.2(18)SXF8

Hello,

could you send me part of your netflow configuration?

i.e.:

show running | inc flow

show running | inc mls

Kind regards,

Jan Nejman

Caligare, Co.

http://www.caligare.com/

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