nanog mailing list archives

Re: Multi-gigabit edge devices as CPE


From: Hamish McGlinn <hmcglinn () gmail com>
Date: Thu, 9 Apr 2015 11:26:00 +1200

Is it a necessity to terminate the layer 3 at the edge? You could get a
10Gbps switch and move it all back to a central location where you have
your high end routers. It would then be terminated as a VLAN and be a
router on a stick kind of topology. Could be a cheaper way to do it without
taking MPLS all the way out to the edge.

As Tim said above, I too was thinking about the Juniper ACX. The 5048/5096
model could suit your needs. They are primarily designed as layer 1(TDM)/2
backhaul devices and i'm not sure they can do a full table. They do have
full JunOS MPLS features. Could be a way to use MPLS-TE to move the layer 2
back to a core location and terminate later 3 there. Would give you some
flexibility over just doing ethernet stuff as I mentioned in the first
paragraph.


Hamish

On Thu, Apr 9, 2015 at 10:46 AM, Daniel Rohan <drohan () gmail com> wrote:

I work at a state REN and we are seeking a lead for a new edge device for
on prem deployment at customer sites.

We currently deploy two classes of routers-- a high end and a low end. Both
the high end and the low end use some of the standard edge features:
MPLS-TE, MBGP, flowspec, vrf, PIM, etc. We deliver full tables over these
devices to the customers that need them.

We recently finished a new ethernet procurement and have a large number of
sites (~200) moving from <1Gbps in bandwidth to 1-10Gb in bandwidth. Our
currently deployed low-end router can't handle these speeds and we can't
afford to place our high end router at 200+ sites.

So, we're looking for a middle tier router to deploy. Something with 2+
SFP+ ports, software that can handle the aforementioned features, and
something with an API that we can leverage for programmatic management.

So far we've not found anything that checks all the boxes. Layer 3 switches
seem like obvious choices, but lack some of the features and RIB/FIB we
need at the edge. Other devices like the Juniper MX5/10 certainly meet the
requirements, but are priced way beyond what we can afford.

Any suggestions for devices we might have overlooked? Preferably in the
less than 10K per unit price point. If such a magical device exists.

-Dan



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