I have two 10/100 SyncInjectors at two sites. One is a RB1100AHx2 still
on v5.25. The other is a RB493G on v6.21.1. I don't see any negotiation
issues or CRC/FCS errors, etc.
Also, I don't think the GigE PoE on the 450 uses all 8 wires for power,
still only 4, 5, 7 & 8 are powered.
On 4/6/2015 12:20 PM, Ken Hohhof wrote:
I've mostly gotten rid of problems with Mikrotik ports not wanting to
work at 100M when 450 APs are powered from a 10/100 Syncinjector, by
changing out the WB surge suppressors from LV to GigE. One site still
seems to have some issues, which go away if using the onboard GPS and
turning off sync over power.
So I can change out the router, Syncinjector, surge suppressor, cable
or AP. If changing out the Syncinjector, I could use another 10/100
version or spend the extra money for the GigE version.
Has anyone done a comparison? Is there any difference between the
10/100 and GigE versions as far as sync over power making Mikrotik
Ethernet ports flap at 100M and then stop advertising 100M
altogether? I'm thinking it could be worse because the power is
actually going on the data pins via the transformers, or better
because it is using all 8 wires, or maybe it makes no difference since
power is still not across twisted pairs.
I do realize I won't get more than 100 Mbps throughput unless I use
the GigE version (duh!), but that doesn't seem to be a major issue
with 20 MHz channels and 256QAM.
