[c-nsp] Graphing traffic for specific BGP peer on exchange points

[Ian Cox]

At 08:37 PM 10/2/2005 +0200, Gert Doering wrote:
>Hi,
>
>On Sun, Oct 02, 2005 at 08:19:30AM -0700, Ian Cox wrote:
> > >> On a positive note, with 7600-SIP-400 and the GE SPA we just released
> > >> (12.2(18)SXF we added support for the much requested MAC address
> > >accounting.
> > >
> > >That's cool :-) - what about "native" 7600 interfaces, like the onboard
> > >interfaces of the Sup720, or on a WS-X6408A-GBIC?
> >
> > There are no counters that indicate how much traffic is sent to/from
> > MAC addresses for WS-X... line cards. The GE SPA MAC chip  had MAC
> > accounting, and other features added to it specifically asked for by ISPs.
>
>Thanks for the clear words.  I'm not sure I can convince management to
>invest in SIP+GE SPA just to get MAC accounting back (not with the
>current prices for bandwidth).
>
>OTOH: how does bridged netflow work?  Doesn't it contain MAC layer
>information?

Bridged Netflow records the IP flow information of traffic L2 
switched on a vlan. It does not store any MAC information for traffic 
switched in the PFCx hardware today.

>  And if it does, where does it come from? - read "can it
>be used to update the (software) counters for MAC accounting"?

No, unfortuantely.


Ian

>gert
>
>--
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>Gert Doering - Munich, Germany                             gert at greenie.muc.de
>fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de