[c-nsp] 28xx and a DS3

chip chip.gwyn at gmail.com
Wed Apr 5 13:39:59 EDT 2006


>
>
> 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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