So, have you increased Ethernet MTU to something more than 1518?..
2012/4/6 <butch-mikro...@ics-il.net> > Right. I determined that is why I could only send 1472 in the beginning. > However, shouldn't I be able to send larger packets when the Control Word > will fragment and reassemble packets? I can only do 1486 now, which is 1518 > - 28 - 4. > > ----- Original Message ----- > From: "Chupaka" <chup...@gmail.com> > To: "Mikrotik discussions" <mikrotik@mail.butchevans.com> > Sent: Friday, April 6, 2012 6:19:50 AM > Subject: Re: [Mikrotik] VPLS Control Word > > In Windows, you set data payload size for ping, and header is 28 bytes > long. So "ping -l 1472" creates packets with length = 1472 + 28 = 1500 > bytes. > > -- > Подпись: > (добавляется в конце всех исходящих писем) > > > > 2012/4/6 <butch-mikro...@ics-il.net> > > > As I understood it, VPLS Control Word would fragment an Ethernet packet, > > then reassemble at the far end of the VPLS tunnel. > > > > Without changing any L2MTU settings, when I set ping to do not fragment, > I > > can only get 1472 across. I understand the overhead that VPLS has, but I > > thought using the Control Word would resolve that issue for me. > > > > MPLS MTU was set to 1508. I increased it to 1518, which I understand is > > the MTU of Ubiquiti AirOS 5.3 gear. > > > > I increased the L2MTU to 1518 on all interfaces I could. For some reason, > > on my 493 and 750, I couldn't change the L2MTU, but it was higher than > 1518. > > > > I did try my test again, but it still wouldn't let me pass a ping larger > > than 1472 without fragmenting. I suspect this is because that's all > regular > > Ethernet allows. > > > > With L2MTU and MPLS MTUs set to 1518, it looks like I can traffic an MTU > > of 1486 (using pings set to not fragment). > > > > I set my Windows MTU to 1518 and pinged through the MPLS\VPLS cloud. > > > > Does this sound right? > > > > What happened to control word auto fragmenting and reassembling? > > _______________________________________________ > > Mikrotik mailing list > > Mikrotik@mail.butchevans.com > > http://www.butchevans.com/mailman/listinfo/mikrotik > > > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > > RouterOS > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://www.butchevans.com/pipermail/mikrotik/attachments/20120406/29567b91/attachment.html > > > _______________________________________________ > Mikrotik mailing list > Mikrotik@mail.butchevans.com > http://www.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS > _______________________________________________ > Mikrotik mailing list > Mikrotik@mail.butchevans.com > http://www.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.butchevans.com/pipermail/mikrotik/attachments/20120406/e239ae31/attachment.html> _______________________________________________ Mikrotik mailing list Mikrotik@mail.butchevans.com http://www.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS
