04-15-2016 11:44 PM - edited 03-05-2019 03:49 AM
Hi,
i work for a small company in regional Australia.
I've been recently tasked to provide a design to upgrade the lan/wan infrastructure of a local gov entity.
For the lan part, is pretty straight forward, i'll go for a bunch of small business 500 series, L3.
The idea is to get rid of spanning tree and go full routed.
For the routers though i'm having a hard time picking the right model..
The network consist of a central office, a relatively large branch and two small remote offices. all you get around here is DSL.
The main office will have 3 ADSL connections, around 20mbps each. 2 will be used for vpn and the last one for internet access.
the second site will have 2 connections, again 1 for vpn to the main office and 1 for internet.
the 2 small branches just 1 connection each.
Which model of router would you use to support this topology?
My actual idea is a 3925 for the main office, a 1900 series for the second and 800 series for the branches.
it would be nice however if i could downsize the 3900 series a bit as it gets pretty pricey.
would it be better to use maybe 3 separate 800 series instead?
Thanks in advance
04-16-2016 06:54 AM
This is a very difficult question to answer without knowing what sort of services you are intending to run.
A 3900 series feels overkill for 3 ADSL connections running crypto to remote routers (also on ADSL) as best case you will end up with a 1mbit circuit due to your upload speed at each end... but then again, actually running 3 ADSL connections concurrently is very unusual in the first place.
What town are you in? If this was me, I would be investigating if anyone (Telstra or AAPT/TPG?) offers EFM/EoC/SHDSL. I would put this in at head office with a 1921-SEC running an EFM-capable HWIC + ADSL2 HWIC. EFM/EoC/SHDSL would connect to the branch sites via a VPN and the ADSL would be for web browsing and a backup VPN if the primary link goes down.
Branch sites I would run 867VAE-SEC's if the budget was tight, then run BGP to control routing to the EFM/DSL at head office (I don't think you get much else on the 867's)...
But maybe you are doing something much more complex.. Without a more detailed description I can't really make to much of a suggestion other than the above.
Regards,
Elliott
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