[c-nsp] Monitoring CPU usage on a Sup720-3BXL (BGP)

[Richard A Steenbergen]

On Tue, Sep 01, 2009 at 03:56:02PM -0700, e ninja wrote:
> 
> *BGP scanner is a housekeeping maintenance activity by the main system
> processor. As such, its 'impact' on the 'system' should continue to diminish
> as more platforms become modular (distributed architecture) and/or switch
> packets in hardware. *

Actually no, bgp scanner has nothing to do with platform architecture of 
packet forwarding of any kind (hardware or otherwise). It is an entirely 
software mechanism which periodically walks the entire bgp table and 
does things like verify next-hop reachability. Distributing the 
operations that it performs so that they happen when a prefix or 
next-hop changes is a much better way to handle things (improves 
convergence and reduces the periodic cpu spikes), but you'll probably 
never see it go away completely. :)

-- 
Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)