Thanks, I'll try 6.x before 6.31 and see what happens. I think this router
actually had something around 6.25 on it when I received it, but silly me, I
upgraded it before putting it in service.
Must be x86 specific, because I know I've got routerboards at customer sites
on 6.33.1 or later and not exhibiting this problem. But the problem is
somewhat subtle, most traffic passes OK, I might have missed the low level
packet loss if I hadn't been investigating the Winbox problem from the ports
running at 100M. I think the fact that the Winbox traffic is originating
from the router itself means packets can burst at full link speed and that
is aggravating the problem.
-----Original Message-----
From: Kevin Radunz
Sent: Friday, January 01, 2016 1:32 PM
To: [email protected]
Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet
links
I think some weard problems started around 6.33. There are posts of
different topics about things like Winbox and VPN traffic not working but
traffic through the device was fine. Some thought MTU changes but I'm not
sure I saw concrete fixes. I know earlier versions don't do this.
I recently upgraded one of those RouterMaxx 1106 routers from 5.2 to
6.33.1
(I actually configured a new router and swapped hardware). Ever since, I
have had performance problems with a couple ports that are connected to
radios with 100M Ethernet ports. The most obvious symptom is that Winbox
won't stay connected or can't download plugins, but I also see pings
dropped
even to the directly connected equipment.
I was a bad boy making multiple changes at once, so I've been gradually
walking them back in the lab on the original router, I upgraded it to
6.33.1
and the problem appeared. I dropped back to 6.31 and it was still there,
but when I dropped back to 5.26 everything was fine again. I haven't
tried
earlier 6.x versions yet, 6.31 is the oldest x86 version I have handy.
This
is not a radio problem, I can reproduce it with a directly connected
laptop
if I force the laptop NIC to 100M FDX.
Is anyone familiar with this problem? I can't find anything on the
Mikrotik
forums. I guess I can live with 5.26 if I have to, but I'd like to know
what is causing this. Do I just need to change some configuration
parameter? I know 6.x brought out hardware only queues, but I think
that's
for Routerboards, not x86. Is there a problem with the Intel NIC drivers
included with 6.x? Any chance that an earlier or later version of 6.x
will
work for me? I see nothing in the change logs about it.
