[c-nsp] Mac address accounting on Cisco 6509

[Stephen J. Wilcox]

Hi Nicolas,
 the 6509 switches using mls, you are only seeing the packets as switched by the 
msfc not the switch.

The only way you can do this is with netflow and an external collector.. iirc 
theres one of the free collectors which can do this out of the box, google for 
it, might be cflowd. 

(i say its the only way, you can also disable mls.. but that will likely make 
your router die when your load is significant)

Steve

On Sat, 31 Jul 2004, Nicolas DEFFAYET wrote:

> Hi,
> 
> I want graph traffic of peers on an IX.
> 
> I have configured the router (Cisco 6509 - 12.2(14)ZA7) like this
> documentation:
> http://www.cisco.com/warp/public/477/SNMP/mac_ip_snmp.shtml
> 
> c6k#sh run int FastEthernet4/4
> Building configuration...
> 
> Current configuration : 303 bytes
> !
> interface FastEthernet4/4
>  ip address <cut>
>  no ip redirects
>  no ip unreachables
>  no ip proxy-arp
>  ip accounting mac-address input
>  ip accounting mac-address output
>  logging event link-status
>  duplex full
>  speed 100
>  ipv6 nd suppress-ra
>  no cdp enable
> end
> 
> I have configured MRTG and it pool correctly the router.
> 
> The problem is that MRTG show a traffic of 4000 bps/s for a peer that
> have a traffic of more than 20 Mbps/s.
> 
> If i try to get data with command 'sh int FastEthernet4/4
> mac-accounting', i get not correct data (the interface have a traffic of
> more than 30 Mbps/s.
> 
> c6k#sh int FastEthernet4/4 mac-accounting
> FastEthernet4/4
>   Input  (489 free)
> <cut>
>                   Total:  55962 packets, 5429077 bytes
>   Output  (482 free)
> <cut>
>                   Total:  21456 packets, 3810965 bytes
> c6k#
> <wait 2 seconds>
> c6k#sh int FastEthernet4/4 mac-accounting
> FastEthernet4/4
>   Input  (489 free)
> <cut>
>                   Total:  55992 packets, 5432601 bytes
>   Output  (482 free)
> <cut>
>                   Total:  21467 packets, 3815239 bytes
> c6k#
> 
> How i can fix this problem ?
> 
> 
> Thanks
> 
> Best Regards,
> 
>