[c-nsp] 28xx and a DS3

[Chris Cappuccio]

For a router with gigabit interfaces, that comes default with a gigabyte of
RAM and a rather fast CPU (well, for Cisco anyways), I can't imagine that you
would have many problems with a DS3, unless maybe you fill it with tiny
packets (all VoIP ?)

chip [chip.gwyn at gmail.com] wrote:
> >
> >
> > I work for a company that SERIOUSLY pinches pennies on network gear and
> > am trying to spec routers for both ends of a point-to-point DS3. Cisco
> > is pretty clear - I need at least a 3800 series. But I'm leery of
> > Cisco's recommendations - it always seems like they're trying to up-sell
> > me. Same (even worse) with my reseller. As an example, Cisco says a 2811
> > is only good for two T1s but I have them in my environment running 4
> > encrypted T1s without breaking a sweat.
> >
> >
> > I've been looking at various specs and they're confusing and often
> > conflict. I've seen specs of encryption performance of more than 130Mbps
> > with the addition of a AIM VPN card and 200 to 250Kpps (100Mbps+ w/ 64
> > byte packets) max throughput for 2800 series routers. That makes it look
> > to me like it should be able to handle a DS3 pretty easily.
> >
> > These routers won't be doing much in terms of services. They'll be
> > running a single instance of OSPF with a pretty small route table (<100
> > routes), be encrypting traffic across the link and possible (but not
> > necessarily) some basic ACLs.
> >
> >
> Just an FYI, I don't think a 2800 series router can handle a full-rate DS3:
> http://www.cisco.com/en/US/products/hw/modules/ps2797/products_data_sheet09186a008010fba2.html
> "Cisco 2800  -  Subrate T3/E3 with concurrent services"
> 
> 
> --chip
> 
> --
> Just my $.02, your mileage may vary,  batteries not included, etc....
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