[nsp] C7200 Bandwidth Points

[Huw Jones (hjones)]

You can find an explanation of 7200 bandwidth points at

http://www.cisco.com/application/vnd.ms-powerpoint/en/us/guest/products/
ps341/c1161/ccmigration_09186a008009184d.ppt


Cheers
Huw
*********************************************************************

 



> -----Original Message-----
> From: Stephen J. Wilcox [mailto:steve at telecomplete.co.uk] 
> Sent: 12 July 2003 10:36
> To: Jason Lixfeld
> Cc: Temkin, David; cisco-nsp at puck.nether.net
> Subject: Re: [nsp] C7200 Bandwidth Points
> 
> 
> Theyre not unlimited altho I dont know what they are off 
> hand.. both 7200 or 
> 7200vxr are quite easy to overload. 
> 
> on the 7200 the bus can be an issue and you will see errors 
> on the interface eg 
> throttles etc when the unit as a whole is loaded up. there 
> are some interesting 
> subtleties too such as if u use a multiport adaptor eg PA-2FE 
> you can load them 
> higher by switching between the two ports as your not using 
> the backplane!
> 
> on both 7200 and vxr the thing you are likely to run into 
> also is CPU, they have 
> one cpu for switching and routing and even a modestly loaded 
> router will hit cpu 
> limit once you start running a couple of routing protocols 
> and holding a couple 
> of copies of the full BGP table!
> 
> imho the limit of these systems is found by experience, take 
> a few of these 
> 7200s play with them for a few months and you'll come to know 
> your router quite 
> well and instinctively know when you can get away with 
> something or if your 
> going to hit trouble :)
> 
> Steve
> 
> On Fri, 11 Jul 2003, Jason Lixfeld wrote:
> 
> > Ah!  you didn't specify VXR! :)
> > 
> > I've never heard of a points system for backplane before.  I thought
> > VXRs were pretty much unlimited.  Well, short of the 
> obvious -- you get 
> > a NPE-G1, I/0-GE and 1 PA-GE for each slot and drive ALL of 
> them, you 
> > are going to run into problems.
> > 
> > On Friday, July 11, 2003, at 3:15 PM, Temkin, David wrote:
> > 
> > > Thanks.  I am speaking about the VXR, but certain 
> adapters I'm using
> > > (the
> > > SA-VAM2 for example) require 600 points off the bat.  I 
> thought that 
> > > was a
> > > little ludicrus.
> > >
> > > Thanks,
> > >
> > > -Dave
> > >
> > > -----Original Message-----
> > > From: Jason Lixfeld [mailto:jason at lixfeld.ca]
> > > Sent: Friday, July 11, 2003 3:13 PM
> > > To: Temkin, David
> > > Cc: cisco-nsp at puck.nether.net
> > > Subject: Re: [nsp] C7200 Bandwidth Points
> > >
> > >
> > > It will usually just error.  I beat the shit out of a 
> 7206 back in 
> > > the day and it ran and ran and ran, but not without it 
> complaining 
> > > about unsupported configurations, etc.  I think I had 4 
> FastEs and 2 
> > > DS3s in it.  Also, that was in the days of 11.1 code.  
> They may have 
> > > done something to later revs of 7200 code to make the device 
> > > unusable because they were trying to push VXRs.  That 
> being said. I 
> > > wouldn't recommend it, especially now when you can get a 
> VXR chassis 
> > > on the used market for next to nothing.  VXRs are godly!
> > >
> > > On Friday, July 11, 2003, at 2:30 PM, Temkin, David wrote:
> > >
> > >> 'nother question.  I understand how bandwidth points work on the 
> > >> 7200 series, however, if I'm building a system and I know that I 
> > >> won't be using interfaces to their full potential (ie, 
> there's an 
> > >> extra FE or DS-3 interface in it) and it exceeds the 
> maximum amount 
> > >> of points per the NPE, will the system run correctly or will it 
> > >> error?
> > >>
> > >> Thanks,
> > >>
> > >> -Dave
> > >> _______________________________________________
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> > 
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> > 
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