[HamWAN PSDR] Component Engineering: Ethernet Switch - 8 port

[Bart Kus]

Steve,

I believe I said exactly this in my email.  :)  It's the advantages we 
both pointed out here that have me kind of excited for this approach.

Ben,

The centralization here is not a new danger.  With a single switch @ 
each site, there was always a SPoF 
<http://en.wikipedia.org/wiki/Single_point_of_failure>. A site going 
down needs to be pulled into redundancy planning.

--Bart


On 02/28/2013 08:55 AM, Steve wrote:
> If you are using Microtik routers... why would you not use their 
> multiport router/switches? Keep it all in the same famility. Their 
> cost is not that much even if you just used it as a switch compaired 
> to Cisco. And you never know when the router part might be handy.
> The main reason is you might run into some compatibility issues down 
> the road. Also, that means you have to learn and keep in your head 
> mutiliple CLI's and OS's. What a pain.
> Just my 2 cents from working in a mixed router / switch enviroment. It 
> sucks....  :-)  Yes, your tied to one vendor, but your sorta doing 
> that already by selecting Microtik as your main wireless radio.
> Or am I missing something here??
> Steve N0FPF
>
>
> On Thu, Feb 28, 2013 at 3:50 AM, Benjamin Krueger 
> <ben.krueger at gmail.com <mailto:ben.krueger at gmail.com>> wrote:
>
>     They look good. I'll take a more detailed review tomorrow. Do
>     remember that if we centralize routing, we're also centralizing
>     failure. One bad switch can now take down an entire site.
>
>
>     On Thu, Feb 28, 2013 at 3:15 AM, Bart Kus <me at bartk.us
>     <mailto:me at bartk.us>> wrote:
>
>         Dear Ben-Jammin',
>
>         So you might recall our recent discussion where you weighed in
>         favor of putting "real" switches into the cell sites to tie
>         the radios together. My major pushback to you was the price of
>         a typical Cisco/etc switch.
>
>         Well, I've updated the "Ethernet Switch - 8 port
>         <https://www.hamwan.org/t/tiki-index.php?page=Ethernet+Switch+-+8+port&structure=HamWAN>"
>         page with 3 new alternatives!  They're a miniscule amount of
>         money more than the D-Link smart switch, and are in fact full
>         blown RouterOS routers.  They also feature 2 more ports (10
>         total) than the 8-port requirement, but the catch is only 5 of
>         the ports are GigE.  This might be OK since all the 5SHPn
>         radios are 100Mbit only.  The GigE requirement was for
>         future-proofing only.
>
>         The other super nice thing is they can do MPLS-TE and preserve
>         QoS.  This might simplify the network structure a lot by
>         moving routing off of the modems and into these routers. 
>         Instead of 7 linked routers at a busy cell site, we'd have 1.
>         The routing tables get a lot easier.  These routers also have
>         more routing horsepower than what's in the modems.  Especially
>         the $105 model, which features a faster CPU and twice the RAM.
>
>         2 of the 3 are also rack-mountable, which might be a good
>         thing in most sites.
>
>         Finally, the idea of using a single OS for all networking is
>         appealing.  No need for fragmented administrator education,
>         and all the gear is designed to work together.
>
>         Let me know what you think.  I'm kinda psyched about this
>         approach.  I ordered a RB2011UAS-2HnD-IN for my personal home
>         use to replace my AP+router here.  We'll see how it works out
>         here.
>
>         --Bart
>
>         RB2011UAS2HnDIN
>
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>
>
>
>     -- 
>     Benjamin
>
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>
>
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