hi, MTU on ethernet vlan interfaces are also 1500. the vlan tag overhead is handled by the switch and NIC. you do not have to care about that.
run tcpdump on all interfaces and look for the ospf hello packets... and can you please post the logs... ? you'r not getting any neighbors with "ospfctl show neig", right? On Fri, May 8, 2009 at 1:34 AM, Stuart Henderson <s...@spacehopper.org>wrote: > On 2009-05-07, carlopmart <carlopm...@gmail.com> wrote: > > Matthew Dempsky wrote: > >> On Thu, May 7, 2009 at 1:47 PM, carlopmart <carlopm...@gmail.com> > wrote: > >>> Which is that sysctl param Stuart?? > >> > >> net.inet.ip.multipath > >> > >> See http://www.openbsd.org/faq/faq6.html#Multipath > >> > > I have setup this param previously ... And I think I have found the > problem. I > > am using vlan on this OpenBSD box, and I have setup mtu to 1450. Maybe > this can > > be a problem to use OSPF?? > > You probably have an error in the logs on both sides telling you that > the MTU mismatches. > > Why do you change the MTU? VLANs would be pretty useless if they meant > using different MTU all over the place.
