Have a strange issue that is showing up in a few places. Was wondering what 
peoples thoughts are on this

Here is how things are setup.
Every tower has a Mikrotik router on it. And is OSPF Routed.

Route to the customer is (Tower A>Tower B>Tower C>Tower D>Customer)
Tower A is where we have fiber, And our colo for the purpose of this 
issue.
Tower A and Tower B connect via Licenced Backhaul and will do 200+Mb/s Full 
Duplex.
Tower B and Tower C connect via Licenced Backhaul and will do 200+Mb/s Full 
Duplex.
Tower C and Tower D connect via un-licenced Backhaul and will do about 
80Mb/s.
Customer Connects to Tower D. AP is a 5ghz Rocket with a sector. SU is a 
Power Bridge.

Now, Here is the bandwidth tests. Using the Mikrotik Bandwidth test to get 
these results.
Testing over each Backhaul from each tower will always max out whatever 
backhaul I'm testing.
IE. Tower A>Tower B will do ~250Mb/s
B>C ~250Mb/s
C>D ~80Mb/s
Then Testing End to End Tower A>Tower D ~80Mb/s (Maxes out the weakest 
link, The BH between C and D. This is expected)

Now, The Strange Part.
Testing from the customers Mikrotik Router on site.
Testing from Customer>Tower D I get about 45Mb/s Down, And 30Mb/s Up.
Testing from Customer>Tower C I get about 45Mb/s Down, And 30Mb/s Up
Testing from Customer>Tower B I get about 15Mb/s Down and 30Mb/s up.
Testing End to End Customer to Tower A I get about 15Mb/s Down And 30Mb/s 
Up.

I don't get what is causing the customer location to show such slow speeds. 
I've tested multiple times, And Confirmed tons of free bandwidth on every 
Backhaul in the path. And testing Tower to Tower shows great speeds. We 
have the same problem in a few places. And in each case, We see a drop in 
speed as soon as it hits one of the licenced Backhauls. However, Each one 
of these backhauls regularly carries over 100Mb/s and have been tested to 
over 200Mb/s each time.

Anyone have any ideas?

Nick Olsen
Network Operations (855) FLSPEED  x106

 

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