Butch, > Of the tunnels I've done with MT, you just use PPtP and set the MRRU > (just like your tunnels). I've done this with standard Linux, too. It > is actually quite an elegant solution.
Actually I missed this part of your post, before making my last post.... Am I understanding correctly.... Are you saying..... When using PPTP and you set the MRRU to the same as your tunnels, both your tunnel ethernet packet size can be 1512, while the ethernet packet size for data inside the tunnel also can be 1512? Meaning that PPTP does not increase the Ethernet packet size, in order to be implemented? (PS, I don't recall the details of PPTP. We generally use IPSEC, OpenVPN, VLANs, MPLS, all of which increase ethernet packetsize above 1512, unless IP payload MTU is reduced..) Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: "Butch Evans" <but...@butchevans.com> To: "WISPA General List" <wireless@wispa.org> Sent: Friday, April 24, 2009 11:03 PM Subject: Re: [WISPA] Interesting BGP Redundancy Opton for FREE > On Fri, 2009-04-24 at 19:37 -0400, Tom DeReggi wrote: >> Over a Layer2 PTP its usually not an issue, but it is over a standard >> transit connection. >> (customer and Internet needs to see 1500 bytes, but an ISP's tunnel >> causes >> packet size to exceed 1500 MTU. > > I have built tunnels that carry 12000 byte packets. Not sure where this > idea comes from. They can be built that will carry as much as 65k > bytes. > >> We use Cipe tunnels to solve that. To split the full size packets before >> it >> enters the tunnel, so tunnel stays at 1500MTU or less, required by the >> transit provider.. >> >> How do you do it with Mikrotik ? > > Of the tunnels I've done with MT, you just use PPtP and set the MRRU > (just like your tunnels). I've done this with standard Linux, too. It > is actually quite an elegant solution. > > -- > ******************************************************************** > * Butch Evans * Professional Network Consultation* > * http://www.butchevans.com/ * Network Engineering * > * http://www.wispa.org/ * WISPA Board Member * > * http://blog.butchevans.com/ * Wired or Wireless Networks * > ******************************************************************** > > > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
