On Sun, Nov 20, 2016 at 2:13 AM, Nathan Anderson <[email protected]> wrote:

> Which again leaves us at square one as far as explaining what is going on,
> but at least we now have a working solution.  So, huzzah for that.  Ever
> since moving the EPC trunk port to a different port on our LTE core router,
> I have been able to do 60Mbit/s single-stream TCP tests to UEs that are
> multiple hops out on our microwave backbone.  I have NEVER been able to
> accomplish this before, much less consistently.  I think that using the
> word "giddy" here to explain our disposition ever since we made this
> discovery would be a vast understatement.
>

It is always a relief to finally isolate problems like this.

We experienced something very odd when we moved an EPC from being directly
connected to a router to being connected via a switch, with separate ports
for bearer, management, and PDN. Even with no overlapping port VLANs on the
switch, the EPC refused to work when connected via a switch, and we had to
consolidate VLANs to one port. Apparently that was an unsupported
configuration.

We'll do a LAG for all trunks when that is available. In a perfect world we
could do multiple LAGs, one to each of two separate switch/router combos,
to eliminate SPOF…

-- 
Jeremy Austin

(907) 895-2311
(907) 803-5422
[email protected]

Heritage NetWorks
Whitestone Power & Communications
Vertical Broadband, LLC

Schedule a meeting: http://doodle.com/jermudgeon
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