[c-nsp] NetFlow for billing on 6500/SUP720-3B

[Alexander Clouter]

TCIS List Acct <listacct at tulsaconnect.com> wrote:
> 
> We have traditionally used mirror ports in a L2 switch attached to a 
> FreeBSD box with NICs in promisc. mode to do our traffic accounting 
> (monitoring the traffic to/from the edge and ignoring local traffic).  
> However, with the new 6509 platform, we are hoping to use NetFlow v9 
> instead and get rid of the sniffer box.  Our hope is that we can 
> monitor each customer port (which is configured as a L3/routed port) 
> and export only the flows to/from the edge to our collector, and then 
> use that data for billing purposes.
>
You will have to configure a seperate instance for each user, but if you 
have DFC3B's (3A's have borked counters apparently, well ours do) you 
can configure a NOOPing PBR route-map on each customer.  Have a common 
ACL for all your 'local' traffic and a catchall route-map rule for 
everything else.

The script up something to SSH in (might be possible via SNMP), 'show 
route-map' and yank out the packet/byte counters.

Profit!

Have fun.

-- 
Alexander Clouter
.sigmonster says: Happiness is a hard disk.