[c-nsp] 7206VXRG2 performance question

Gabriel jarod125 at gmail.com
Sat Jul 25 17:29:24 EDT 2009


Hi all,

the company I work for is involved in a WAN redesing process, so we
got in touch with a few Cisco partners to help us. We're considering a
dual-hub and spoke topology (about 100 spokes, more in the future)
with both hubs active (half of the spokes will connect to one hub, the
other half to the other).

As I said, we contacted some Cisco partners (as we don't have the
necessary expertise to do this on our own) and one of them recommended
that, besides using the 7206 (with NPE-G2 and VSA) as the hub router,
we should also get a SCE1010 box to handle the QoS.

One of the aspects I'd like your feedback on is whether this SCE box
is required or not (from the docs and design guides I read, it was
only present in SP networks). I'll try to give more details (please
let me know if they are relevant or not and what others have I
missed):

- DMVPN (although one tunnel/branch was also suggested) over IPSec
- spokes connect to hubs via two providers (with per-flow load-balancing)
- hub bandwith will probably not exceed 10 mbit/provider
- spoke bandwith will be 256kbps/provider for roughly half of the
spokes and 128kbps/provider for the other half
- EIGRP as routing protocol
- no VoIP at the moment, but it could appear sometime in the future

Traffic is not latency-sensitive (as I said, no VoIP yet) and will be
split into four QoS classes (in the future, others might appear).

So, based on the above, can you comment on the capabilities of the
7206 alone to handle everything without issues?

Thanks,
Gabriel


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