[c-nsp] NetFlow

[Tim Stevenson]

If you are running CatOS/IOS (hybrid), you can use the set mls 
bridged-flow-statistics enable command to enable this (NF collection for 
bridged flows).

In IOS (native), unfortunately, this is not yet implemented.

Note that there are two aspects of NF on 6500 - the NF stats tracked in the 
PFC, and the NF stats tracked on the MSFC. Note that ip route-cache flow 
under an L3 interface handles only the latter.

Check out the user docs for all the CLI relating to PFC vs MSFC NF 
collection & export.

Tim

At 12:33 PM 8/6/2004, cisco-nsp-request at puck.nether.net vociferated:
>Message: 1
>Date: Fri, 6 Aug 2004 19:31:07 +0300
>From: "Jean-Christophe Varaillon" <jcvaraillon at dolnet.gr>
>Subject: [c-nsp] NetFlow
>To: <cisco-nsp at puck.nether.net>
>Message-ID:
>      <000101c47bd2$c6c9f790$fc95a8c0 at dolusers.internal.dolnet.gr>
>Content-Type: text/plain;     charset="us-ascii"
>
>Hi,
>
>I need information about exchanged flows between servers of a same
>subnet, same VLAN.
>
>Those servers are directly connected to a Cisco 6509,
>where that VLAN exist on its L2 database (show vlan).
>
>A corresponding L3 vlan interface exist as well on that 6509 with an IP
>belonging to the server subnet.
>
>I don't think that adding the command "ip route-cache flow" on the
>"interface vlan 2" on the 6509
>would give me what I need (flows established between those servers
>only).
>
>I think that adding this command would give flow information about what
>flowing from the VLAN 2
>to any and from any to VLAN2, but not from VLAN2 to VLAN2. Is this
>correct ?
>
>If so, is there any other Cisco tool that could provide such statistics?
>
>To extend this, do you know any draw-back setting-up flows switching on
>each interface (vlan and routed interfaces)
>of a 6509 ?
>
>Any suggestion and/or comments are welcome.
>
>Thank you.
>
>Christophe



Tim Stevenson, tstevens at cisco.com
Routing & Switching CCIE #5561
Technical Marketing Engineer, Catalyst 6500
Cisco Systems, http://www.cisco.com
IP Phone: 408-526-6759
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