All things related to multicast

[Marshall Eubanks <>]

Could you be receiving Norton Ghost transmissions from outside your  
network ?

They should be filtered out but are not always.

Regards
Marshall

On Sep 26, 2007, at 2:45 PM, 
<>
 wrote:

> Hello !
>
>             We use a lot of multicast on the LAN. The throughputs  
> of multicast traffics seem to vary a lot during the day and ghost  
> operation are not reliable on the LAN.  We use Catalyst 6500 with  
> Sup720  PIM- Sparce-dense mode. During the day, Cpu, memory and  
> link utilization doesn’t seem to be busy enough to affect  
> performance.  At night Ghost are very fast so the problem point to  
> my switch.  Maybe I am not monitoring the right variable on my  
> Catalyst 6500 to link this performance issue with a certain  
> chokepoint in my Catalyst.
>
>
>
>             Many CCIE came to solve our multicast/Ghost problem but  
> nobody ever succeeded. If anybody can suggest item I might have  
> overlook or I should investigate let me know off line. We have  
> validated the configuration with auto-RP and pim-sparce-dense mode.
>
>
>
> Thanks,
>
>
>
> Christian Héroux
>
> Bacc Ing. ÉTS, M. Ing. Poly, étudiant MBA HEC, Ing jr.
>
>
>
> Analyste de l'informatique
>
> (Sécurité réseau & Télécom)
>
> Section systèmes, infrastructures et télécommunications
>
> École de Technologie Supérieure
>
> 1100 rue Notre-Dame ouest
>
> Montréal, Québec
>
> H3C 1K3
>
> Tél : 396-8800 (7863)
>
>
>
>  "Network design is 50 percent technology, 50 percent diplomacy, 50  
> percent magic"