[c-nsp] 75xx CyBuses

[Chris Cappuccio]

Under the best optimal conditions (maybe the worst conditions if you
are using a VIP2), a single VIP2-50 is lucky to be able to fill up less
than 10% of the bandwidth of a single cybus.  So, it probably doesn't
make any difference at all.  

Bill Wichers [billw at waveform.net] wrote:
> Just a (hopefully) easy question: is there any reason to plan router
> layout in a 7507/7516/7576 chassis such that various VIP2's are "grouped"
> on one of the two CyBuses? I have a router that picks up some traffic from
> some local aggregation (customer access circuits), but mostly just passes
> traffic between two interfaces (a local carrier handoff and a link to
> another POP). The Cisco docs I can find seem to imply that the CyBuses are
> independent of each other and thus it might be good to have the handoff
> and POP connections on one CyBus and the local aggregation circuitry on
> the other, but since most traffic is probably likely to go between the
> buses anyway (customer traffic goes mostly "out" rather than to other
> local customers), I'm not sure if there is much difference. Any insights?
> 
>      -Bill
> 
> *****************************
> Waveform Technology
> UNIX Systems Administrator
> 
> 
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