So do you tunnel everything back to the core and then do "router on a
stick" ?
On 11/20/2019 2:14 PM, Gino A. Villarini wrote:
Yeap VPLS is where is at…
VPLS tunnels to the towers, CORE routing + L2VPN to customers(
Enterprise, Wholesale)
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*From: *AF <af-boun...@af.afmug.com> on behalf of Josh Baird
<joshba...@gmail.com>
*Reply-To: *AnimalFarm Microwave Users Group <af@af.afmug.com>
*Date: *Wednesday, November 20, 2019 at 3:09 PM
*To: *AnimalFarm Microwave Users Group <af@af.afmug.com>
*Subject: *Re: [AFMUG] MPLS
It seems like lots of people in the WISP-world are running MPLS just
to use VPLS. Reasons for doing this are typically to achieve better
IPv4 utilization (not having to route a block of IP's to each POP and
maybe wasting IPv4, etc).
Another common use-case is providing L2VPN services for customers
(connecting multiple locations together, etc).
On Wed, Nov 20, 2019 at 2:03 PM Adam Moffett <dmmoff...@gmail.com
<mailto:dmmoff...@gmail.com>> wrote:
I think I don't fully understand what the advantages are of MPLS.
I mean I've been reading the white-papers and such, and I see it
brings some features to the table, but when are we going to use them?
Routing speed:
* MPLS can make forwarding decisions faster. When they made
this in the 1990's I'm sure that was a big deal, but I'm
doubting whether there is really measurably better latency on
modern hardware. Is there?
Traffic Engineering:
* It can do redundancy, but it seems to rely on the routing
protocol (eg OSPF) to know which paths are up. I don't
understand what that buys us.
* It can do load sharing on unequal paths. Admittedly that's
very hard to do with L3 routing protocols, and that would have
been extremely useful at one point in time. But how often
does that happen now that we're in a world of gigabit and
10gigabit connections?
L2 tunneling
* It can transport L2 traffic over an L3 network. It does it
with less overhead (8 bytes) than any other method I can think
of. I don't really see a downside to this.
So are people running MPLS just to get VPLS tunnels, or do you
find that the other tools in the MPLS toolbox matter in today's
world?
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