Monitoring each port of a NM-ESW-16 with Netflow

Unanswered Question
Sep 12th, 2007
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Hello,


How can I monitor each port of an EtherSwitch?


I've already tried but, i have no result:


I've configured all ports into a VLAN1.

I've configured an IP Address for the card : Vlan1


So all PC or router connected in the EtherSwitch are in a same VLAN / LAN.


But when I monitor the router with the Netflow Analyzer, I cannot see the 16 ports of the EtherSwitch.


I just see the interface Vlan1.


But I want to monitor each port of the EtherSwitch.


Can you help me?


Many Thanks

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Jan Nejman Wed, 09/12/2007 - 10:24
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Hello.

Please, which box do you using and which version, CatOS, IOS or Native IOS? Could you send me your netflow configuration? Did you also configure mls nde? Did you configure layer2-switched accounting?


For IOSes try the command:


ip flow ingress layer2-switched vlan

ip flow export layer2-switched vlan


However, from the IOS guide: A PFC3B or PFC3BXL running 12.2(18)SXE or higher is required for this command, which enables NDE for all traffic within the specified VLANs rather than just inter-VLAN traffic.


If you are using a CatOS you may use the following command:


set mls bridged-flow-statistics enable




Kind regards


Jan


connect101 Wed, 09/12/2007 - 22:55
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Hello,

Thanks for the reply.

I'm using a 3825 with an IOS c3825-advipservicesk9-mz.124-11.T2


This is my Netflow configuration i've put into the router :

!!__________________________

!!

ip flow-cache entries 9996

ip flow-export source Vlan2

ip flow-export version 5

ip flow-export destination 192.168.0.52 9996


!! 192.168.0.52 is the PC monitor.

!!______________________________



I cannot put the "ip route-cache flow" command

into each port of the EtherSwitch.


I've tried your solution, but ios have not this command :

ip flow ingress layer2-switched


The following are possible on with this IOS


ip flow-aggregation

ip flow-cache

ip flow-capture

ip flow-egress

ip flow-export

ip flow-top-talkers



Many thanks


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