[c-nsp] Router recommendation

Rodney Dunn rodunn at cisco.com
Wed Sep 20 13:56:40 EDT 2006 

On Wed, Sep 20, 2006 at 11:20:22AM -0500, Frank Bulk wrote:
> With the right amount of RAM the NPE-400 is supposed to support 8000
> sessions -- does that come with some caveats based on traffic type/volume?

PPS and packet size.

Then you have to factor in feature overhead on a software forwarding platform
and even in some hardware specific applications (ie: some feature patterns
might require feedbacks depending on the hardware architecture).


> 
> Frank
> 
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Robert E. Seastrom
> Sent: Tuesday, September 19, 2006 5:05 PM
> To: Rick Kunkel
> Cc: Cisco-NSP Mailing List
> Subject: Re: [c-nsp] Router recommendation
> 
> 
> Let's step back from this and look at it the larger picture and your
> needs:
> 
> How many customers (ie, how many pppoe/lt2p sessions)?
> How many packets/second?
> How many megabits/second?
> 
> We started running out of steam at around 1000 users on an NPE-300.
> Our users were some filesharin' fools though.  Quebecers outstripped
> Ontarians in their per capita b/w usage by like 50%.
> 
> We found that the NPE-G1s were about 3.5x the performance, so we
> upgraded.  With about 1700 users online, 75 megs down, 50 megs up,
> 27kpps, cpu utilization peaks at right around 40%.
> 
> Aggregation routers just carry our OSPF, not full internet routes, and
> run just fine (69 megs free) with 256 megs in 'em, no reason to put in
> a gig.
> 
>                                         ---Rob
> 
> 
> Rick Kunkel <kunkel at w-link.net> writes:
> 
> > Heya folks,
> >
> > Thanks much for all the suggestions.  As a relatively small company we go 
> > through this process like once every 3 years or so, and of course, by 
> > then, not only have all the models changed and stuff, but I've completely 
> > forgotten all the research I may have done before.
> >
> > If you can bear with me, I think I'm almost there...
> >
> > It sounds like whatever I do, I'm looking at 1 GB of RAM.  Everything 
> > else-wise, it sounds like my options are something like this:
> >
> > 7206VXR w/NPE-G2
> > A 7600 series
> > A 10000 series
> >
> > My biggest confusion right now, and to which I'm having trouble finding 
> > the answer, is what exactly pieces are required for each.  For instance, 
> > as far as I know, without the NPE-G2 (or some other other NPE), the 7206 
> > is just a paper-weight, even if it has other modules in it.  (Is that 
> > correct.)  I'm assumign the same is true for the supervisor engine, but 
> > then it sounds like even the supervisor engine has components, like the 
> > PFC2 or MSFC2.  Ditto for the 10000.
> >
> > For the record here, it's worth noting that I'd be happy to speak with a
> > knowledgeable salesperson about this.  Obviously, no one here is obligated
> > to answer what seem to me to be pretty basic questions.  Please let me
> > know if I should be hunting down a salesperson somewhere.
> >
> > Getting back to the three options above...  (and assuming that some of you
> > might not just tell me to find a salesperson...)  What are the basic
> > pieces needed for a functioning 7600 or 10000?  Beyond that, I will be
> > requiring at least 3 GigE ports and and ATM DS-3 port.  But my guess is
> > that the GigE ports MAY come on the processor thingy, like the NPE-G2, and
> > I'm expecting the ATM card to be separate.
> >
> > Again, i can't thank people enough for this.  Again, doing a pretty decent
> 
> > sized purchase like this only every couple years or so just isn't 
> > conducive to this kind of knowledge.
> >
> > Thanks,
> >
> > Rick Kunkel
> >
> > On Fri, 15 Sep 2006, Matthew Crocker wrote:
> >
> >> 
> >> I'm pretty sure you don't want to do DSL Aggregation/PPPoE  
> >> termination on a 12000 series.  The 12.0 software is lacking in edge  
> >> features.
> >> 
> >> for DSL aggregation you really want to look at the 7206 or 10000  
> >> series with appropriate processors.
> >> 
> >> -Matt
> >> 
> >> On Sep 15, 2006, at 12:34 PM, Rick Kunkel wrote:
> >> 
> >> > Another possibility...  i've heard that 12000 series can be had
> >> > relatively inexpensively on Ebay.  Any thoughts on these?
> >> >
> >> > Thanks,
> >> >
> >> > Rick
> >> >>>>>
> >> >>>>> On Wed, Sep 13, 2006 at 05:36:43PM -0700, Rick Kunkel wrote:
> >> >>>>>> Heya folks... I'm pretty dim on the upper lever Cisco gear,  
> >> >>>>>> and we're
> >> >>>> in
> >> >>>>>> the market for something burlier than the 7206 we've currently  
> >> >>>>>> got.  I
> >> >>>>>> need some suggestions for products...
> >> >>>>>>
> >> >>>>>> The requirements:
> >> >>>>>>
> >> >>>>>> 1. We're terminating a DSL Aggregation DS-3, so there must be an
> >> >>>>>> electrical and/or optical DS-3 module available for it.
> >> >>>>>>
> >> >>>>>> 2.  At least 3 GigEthernet ports, either somewhat built-in or in
> >> >>>> modules.
> >> >>>>>>
> >> >>>>>> 3.  Capable of handling at least 3 full BGP routing tables.
> >> >>>>>>
> >> >>>>>> 4.  Must be able to do operating-system-wise everything that our
> >> >>>> current
> >> >>>>>> 7206 does, like "atm route-bridged ip" stuff and 802.1Q.  (I  
> >> >>>>>> have a
> >> >>>>>> feeling this is kind of a "it goes without saying" type of
> >> >>>> requirement,
> >> >>>>>> but I wanted to be clear...)
> >> >>>>>>
> >> >>>>>> 5.  Able to route/switch about 1Gbps from the various internet  
> >> >>>>>> facing
> >> >>>>>> interfaces to the various internal facing interfaces.  (I'm  
> >> >>>>>> sure this
> >> >>>> is
> >> >>>>>> not a simple answer, but unfortunately, that's about all I've  
> >> >>>>>> got to
> >> >>>> go on
> >> >>>>>> right now.)
> >> >>>>>>
> >> >>>>>> Any suggestions?
> >> >>>>>>
> >> >>>>>> Thanks!
> >> >>>>>>
> >> >>>>>> Rick Kunkel
> >> 
> >> --
> >> Matthew S. Crocker
> >> Vice President
> >> Crocker Communications, Inc.
> >> Internet Division
> >> PO BOX 710
> >> Greenfield, MA 01302-0710
> >> http://www.crocker.com
> >> 
> >> 
> >
> >
> >
> >
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