[c-nsp] Router recommendation

Kristian Larsson kristian at spritelink.se
Tue Sep 19 19:57:46 EDT 2006


On Tue, Sep 19, 2006 at 03:15:22PM -0700, Rick Kunkel wrote:
> I'll do my best for current stuff.  Need a little room to grow too I 
> suppose...
> 
> > How many customers (ie, how many pppoe/lt2p sessions)?
> 
> Actually, none of pppoe or l2tp right now.  We've got about 350 DSL 
> customers that are currently running in the "atm route-bridged ip" mode.  
> At some point, we may switch these to ppp.  It's also possible that we may 
> move another DSL aggregation circuit we have from Verizon into this 
> router, which would add about another 350.  Also, I suppose we could do 
> some point-to-point links from this router at some point.
> 
> > How many packets/second?
> 
> This, unfortunately I do not have a great handle on.
> 
> > How many megabits/second?
> 
> We anticipating around 1 Gbps, but I think we better plan on a few times 
> that.
1Gbps for 350 customers is really a lot of
traffic. For example, we just connected a LAN with
700 customers. They get 10Mbps full duplex
connection to the internet and usage peaks out at
180Mbps with an average of 55Mbps. You must have
some really bandwidth hungry ADSL customers.


   Kristian.


> And of course i already mentioned that it probably needs to safely hold 3
> full routing tables.
> 
> Thanks!
> 
> Rick
> 
> On Tue, 19 Sep 2006, Robert E. Seastrom wrote:
> 
> > 
> > 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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> > 
> 
> 
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-- 
Kristian Larsson                                   KLL-RIPE
Network Engineer                      Net at Once [AS35706]
+46 704 910401			     kristian at spritelink.se


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