I've got a Cisco 881 with the "Advanced IP features" This will do for what I'm
trying to accomplish.
I think I'm going to go with a BGP tunnel.
No one at RCN has any clue about this - they may not even provide the server. The sales
droids only know how to sell their pre-packaged plans.
Does anyone know who provides BGP tunnel session? Doesn't really need to
be RCN as I can create a tunnel with any peer.
Thanks
>
> They are obviously not running full tables on their 3640. I'd imagine a
> raspberry pi would have more BGP capability and throughput than a 3640,
> though I don't recommend doing that even as a joke. But an ERR would be
> fine if they're expecting nothing more than a slightly faster 3640 with
> maybe some extra features.
>
> On 9/3/19 3:54 PM, Florian Brandstetter via NANOG wrote:
> > Ubiquiti's EdgeRouter Lite is equipped with 512 MiB of DDR2 memory, of
> > which after startup, roughly 491 MiB can be utilized. 119 MiB of the
> > remaining memory are allocated by the base of the router already,
> > which leaves you with a remainder of 372 MiB memory. Memory usage
> > depends on the architecture for objects, for example there's a large
> > difference between x86 and x86_64, since on x86_64, the compiler will
> > generally use 64bit boundaries to be faster; the ERL runs on a MIPS64
> > architecture, which will have a similar trade-off. To get to the
> > point, let's have a quick look at the components using memory: bgpd,
> > zebra, kernel. Roughly 180 MiB of memory are required to keep a single
> > full table in bgpd alone, leaving you with 192 MiB of free memory.
> > Accounting further, zebra will eat at least another 100 MiB for
> > exporting the BGP RIB to the Kernel (FIB), leaving you with 100 MiB.
> > At this point, you have a mere 92 MiB left for fitting the routes into
> > the kernel, and to leave room for RX buffers on sockets.
> >
> > I don't see full tables happening from a memory perspective on the
> > EdgeRouter Lite, you would want to look at something with at least 2
> > GiB of memory to keep the whole system running smoothly, and when
> > using Quagga and Zebra, that's still aimed rather low. FRRouting at
> > this point uses 2 GiB for 4 full tables on an x86 system, without any
> > magic attached.
> >
> > Having kept it unmentioned, the EdgeRouter Lite has a dual-core with
> > 500 MHz, and surely your BGP updates processing isn't offloaded, hence
> > you will pretty quickly kill the whole router when you flood it with a
> > full table, unless you set very low queue sizes, which isn't really
> > reliable though since you generally want BGP to converge fast - not
> > after a period of 15 minutes with the CPU sitting on 100%.
> >
> > You might want to install something like OpenWRT (which I don't know
> > the possibility of on an ERL), and run BIRD if you're tied to a low
> > memory footprint, however, in a base vendor-generic setup of the ERL,
> > it's beyond my understanding why one would even suggest running a full
> > table on it.
> > Sent from Mailspring
>
> --------------69793807A24007030ACBABEA
> Content-Type: text/html; charset=utf-8
> Content-Transfer-Encoding: 7bit
>
> <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
> </head>
> <body text="#000000" bgcolor="#FFFFFF">
> <p>They are obviously not running full tables on their 3640. I'd
> imagine a raspberry pi would have more BGP capability and
> throughput than a 3640, though I don't recommend doing that even
> as a joke. But an ERR would be fine if they're expecting nothing
> more than a slightly faster 3640 with maybe some extra features.<br>
> </p>
> <div class="moz-cite-prefix">On 9/3/19 3:54 PM, Florian Brandstetter
> via NANOG wrote:<br>
> </div>
> <blockquote type="cite"
> cite="mid:69414933-770B-464C-B9DA-A8F7A61566A1@getmailspring.com">
> <meta http-equiv="content-type" content="text/html; charset=UTF-8">
> <div>Ubiquiti's EdgeRouter Lite is equipped with 512 MiB of DDR2
> memory, of which after startup, roughly 491 MiB can be utilized.
> 119 MiB of the remaining memory are allocated by the base of the
> router already, which leaves you with a remainder of 372 MiB
> memory. Memory usage depends on the architecture for objects,
> for example there's a large difference between x86 and x86_64,
> since on x86_64, the compiler will generally use 64bit
> boundaries to be faster; the ERL runs on a MIPS64 architecture,
> which will have a similar trade-off. To get to the point, let's
> have a quick look at the components using memory: bgpd, zebra,
> kernel. Roughly 180 MiB of memory are required to keep a single
> full table in bgpd alone, leaving you with 192 MiB of free
> memory. Accounting further, zebra will eat at least another 100
> MiB for exporting the BGP RIB to the Kernel (FIB), leaving you
> with 100 MiB. At this point, you have a mere 92 MiB left for
> fitting the routes into the kernel, and to leave room for RX
> buffers on sockets.</div>
> <br>
> <div>I don't see full tables happening from a memory perspective
> on the EdgeRouter Lite, you would want to look at something with
> at least 2 GiB of memory to keep the whole system running
> smoothly, and when using Quagga and Zebra, that's still aimed
> rather low. FRRouting at this point uses 2 GiB for 4 full tables
> on an x86 system, without any magic attached.</div>
> <br>
> <div>Having kept it unmentioned, the EdgeRouter Lite has a
> dual-core with 500 MHz, and surely your BGP updates processing
> isn't offloaded, hence you will pretty quickly kill the whole
> router when you flood it with a full table, unless you set very
> low queue sizes, which isn't really reliable though since you
> generally want BGP to converge fast - not after a period of 15
> minutes with the CPU sitting on 100%.</div>
> <br>
> <div>You might want to install something like OpenWRT (which I
> don't know the possibility of on an ERL), and run BIRD if you're
> tied to a low memory footprint, however, in a base
> vendor-generic setup of the ERL, it's beyond my understanding
> why one would even suggest running a full table on it.</div>
> <img class="mailspring-open" alt="Sent from Mailspring"
> style="border:0; width:0; height:0;"
> src="https://link.getmailspring.com/open/69414933-770B-464C-B9DA-A8F7A61566A1@getmailspring.com?me=06695157&recipient=bmFub2dAbmFub2cub3Jn"
> moz-do-not-send="true" width="0" height="0">
> </blockquote>
> </body>
> </html>
>
> --------------69793807A24007030ACBABEA--
>