We run Dragonwave systems and have no issues at all. MPLS in itself doesn't make a difference since the gear is a straight Ethernet link. Just make sure your gear handles your frame sizes and tagging and you should be good. As long as your radio link is engineered right you should have high reliability. The key is having enough margin to maintain links during fades. So for example our link runs at -34 dbm and our receivers are good down to about -65 dbm at this rate. That gives us a roughly 35 dbm margin for degradation before the modems will change modulation a to a lower speed. Here in chicago we have seen maybe a total of an hour of weather related fade in a 10 years period on a 20 mile link running 600 Mbps. They are very popular for low latency since they actually have less latency than fiber. The high frequency traders pay big bucks to get on the microwaves between markets because of that trait. Microwaves through air are faster than photons in a fiber cable. Steven Naslund Chicago IL Sent from my iPhone

On Feb 5, 2015, at 4:03 PM, Mike Hammett <nanog@ics-il.net> wrote:

Shouldn't really be any different as long as your gear supports the appropriate MTUs.

----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com

----- Original Message -----

From: "Scott Weeks" <surfer@mauigateway.com> To: nanog@nanog.org Sent: Thursday, February 5, 2015 3:55:04 PM Subject: mpls over microwave

Anyone doing MPLS over microwave radios? Please share your experiences on list or off.

scott

On 6/Feb/15 00:31, Eric Louie wrote:

I work for a fixed wireless provider, and our mpls-capable backhauls are all running mpls with 9200 MTU with no problem. The only weirdness I encounter is if I have multiple equal-cost routes to the same location, one over MPLS and one not, end up having ping/unreachable issues from my monitoring equipment. The solution has been to cost one path (the MPLS) lower than the other. The only other problem I had was with radio's that didn't support larger 9000+ byte MTU packets - we've phased that radio out for now. if you run MPLS with 1500 byte MTU, you'll have issues with 1500 byte packets with the DF-bit set. That was a nasty discovery in the production network, your mileage will not vary with that problem.

I'm curious why you'd have multiple paths in your network (equal-cost to boot) where some support and others don't. Mark.

We run MPLS over wireless links of all kinds quite extensively. The key is to make sure that packet loss is at a minimum (duh), and to ensure that your wireless links have a large enough MTU to pass the additional bytes for each label. Other than that, we treat the wireless links as wires. -- Tim Huffman Staff Manager - Engineering | Windstream 999 Oak Creek Dr | Lombard, IL 60148 timothy.huffman@windstream.com | windstreambusiness.com o: 630.590.6012 | m: 630.340.1925 | f: 630.986.2496 -----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Spyros Kakaroukas Sent: Friday, February 06, 2015 5:46 AM To: 'surfer@mauigateway.com'; nanog@nanog.org Subject: RE: mpls over microwave Hey, We run few mpls links ( 7600s/3600s on the mpls side mostly ) over Ceragon wireless gear. Nothing too fancy, I just treat them as switches ( or even just "cables" for some boxes, not doing mac learning at all ). No issues whatsoever on the networking side. My thoughts and words are my own. Kind Regards, Spyros -----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Scott Weeks Sent: Thursday, February 05, 2015 11:55 PM To: nanog@nanog.org Subject: mpls over microwave Anyone doing MPLS over microwave radios? Please share your experiences on list or off. scott This e-mail and any attachment(s) contained within are confidential and are intended only for the use of the individual to whom they are addressed. The information contained in this communication may be privileged, or exempt from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender and delete the communication without retaining any copies. Rolaware Hellas SA is not responsible for, nor endorses, any opinion, recommendation, conclusion, solicitation, offer or agreement or any information contained in this communication. ---------------------------------------------------------------------- This email message and any attachments are for the sole use of the intended recipient(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message and any attachments.