L2 connections. Like cellphone towers back to some point? or business
location a to business location b?
can you give me some examples? Thanks.
----- Original Message -----
From: Adam Moffett
To: af@af.afmug.com
Sent: Wednesday, November 20, 2019 2:20 PM
Subject: Re: [AFMUG] MPLS
Well there's a fiber side and a wireless side to this operation. On the
fiber side we're selling a crapload of L2 connections.
Another thing that appeals to me is that if I tunnel all traffic from a POP
back to the core, then the routers at each POP have a config that is almost
identical. Just different IP addresses. Everything between the POP and the
core is a relatively generic copy/paste config.
So I'm pretty well convinced that VPLS is a good idea, but I'm wondering if
the rest of the MPLS features are just old baggage or will I actually use it.
I'm guessing I won't.
On 11/20/2019 2:56 PM, Dennis Burgess via AF wrote:
You can, its up to you.
Is routing faster on MikroTik by using MPLS/VPLS? No
Do you gain extra capacity by reducing the router load per packet by using
MPLS? Yes, think looking at 4-bytes of data vs 40. Is it 10 fold increase, no
but you get the point.
What is the big deal about MPLS without VPLS? Just that it does get you a
bit of extra capacity. Bout it.
Why does everyone want to run VPLS? VPLS gets you the IP and subnet
savings. You do need to design your core network correctly to handle this. If
you have a single core router and all of your tunnels go to that, then yes if
it goes down yes your tunnels are down, but may of our customers have to have
redundancy, so multiple edges, connected to multiple cores, connected to
multiple VPLS termination boxes, connected to multiple PPPoE servers. Etc.
The core is VERY robust, but the general network is not. This also does not
work very well if your have multiple geographically diverse BGP feeds, i.e.
everything goes back to the datacenter and that’s where it is, great, but
otherwise, it gets to the point that it not worth the effort.
L2VPNs? Weill there are a few customers that prefer them, but in all
honestly there is better, more secure, and faster protocols out there. Keep in
mind that L2VPNs are fine if all of the customers are on your network, but they
seldom are, so you will need a plan for those guys as well. My questions is
why do you build your network to deliver something that people don’t want, a
layer 2 network connection. If you are delivering Pipes then sure, but you
have to have the capacity and availability to do so. Most Wisps, not all,
don’t have this figured out. 99% of the time, they can make more money by
providing a managed L3 solution than L2 anyways.
Dennis Burgess, Mikrotik Certified Trainer
MTCNA, MTCRE, MTCWE, MTCTCE, MTCINE, MTCSE, HE IPv6 Sage, Cambium ePMP
Certified
Author of "Learn RouterOS- Second Edition”
Link Technologies, Inc -- Mikrotik & WISP Support Services
Office: 314-735-0270 Website: http://www.linktechs.net
Create Wireless Coverage’s with www.towercoverage.com
From: AF <af-boun...@af.afmug.com> On Behalf Of Adam Moffett
Sent: Wednesday, November 20, 2019 1:17 PM
To: af@af.afmug.com
Subject: Re: [AFMUG] MPLS
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)
Gino Villarini
Founder/President
@gvillarini
t: 787.273.4143 Ext. 204
m:
www.aeronetpr.com | Metro Office Park #18 Suite 304 Guaynabo, PR 00968
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> 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:
a.. 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:
a.. 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.
b.. 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
a.. 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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