While running from R1 to R4 (maxing at only 10 Mbps), I can also run from
R1 to R3 an additional 15+.

Also, while running from R1 to R4 (again, maxing at 10 Mbps), I can also
run from R3 to R4 an additional 60+.


Aggregation on the M5 link is defaulted to 32 frames / 50,000 bytes. Could
this be causing such issues on a good link?






On Wed, Oct 26, 2016 at 2:54 PM, Christopher Gray <
[email protected]> wrote:

> R1 is the only router with 1 Gbps ports. Everything is auto except 1
> connection that requires manual settings.
>
> *R1* -- (Auto 1 G FD) ...Internet... (Manual 100 FD) -- *R2 *-- (Auto 100
> FD)  -- *R3* -- (Auto 100 FD) ...M5... (Auto 100 FD) -- *R4*
>
> MTU is set to 1500 on every port (and the UBNT link).
>
> Flow control is off, and none of the interfaces show any pause frames
> received.
>
>
> This is a live link, but it is only running ~ 1 Mbps otherwise.
>
>
>
> On Wed, Oct 26, 2016 at 2:12 PM, Steve <[email protected]> wrote:
>
>> Few questions come to mind.
>>
>> Are all set to auto negotiate or are they fixed at 100Mbit?
>> What are the MTU's of each connection?
>> Flow control turned on?
>>
>>
>> ----- Original Message -----
>> From: "Christopher Gray" <[email protected]>
>> To: "af" <[email protected]>
>> Sent: Wednesday, October 26, 2016 1:57:56 PM
>> Subject: [AFMUG] Trouble Identifying Throughput Issue
>>
>> I have a section of my network that is lacking something, and I can't
>> figure out where the problem is. I'm looking for any thoughts /
>> suggestions.
>>
>> 4x MikroTik routers
>>
>> Link speeds:
>> R1 -- (30 Mbps IP / Transport) -- R2 -- (100 Mbps Eth) -- R3 -- (75 Mbps
>> UBNT M5) -- R4
>>
>> The limiting factor for traffic should be the Transport, and I expect to
>> be
>> able to get 30 Mbps across the system (one-way).
>>
>> Testing from R1 to R3 runs 30 Mbps.
>>
>> Testing from R2 to R4 runs 75 Mbps.
>>
>> Testing from R1 to R4 only runs 10 Mbps (instead of 30).
>>
>> Tests were one-way btest with 20 TCP streams.
>>
>> Any ideas for something that would cause this?
>>
>
>

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