On Mon, Jan 14, 2019 at 03:08:32PM -0500, Henry Bonath wrote: > Is it possible to set to ignore MTU on OpenOSPFD?
No, this is not supported. > > For example on Cisco IOS I can add the command "ip ospf mtu-ignore" > > I am having some issues if the MTU is mismatched and some neighbors will be > stuck in Exstart or Exchange. Exactly. If the MTU differs between neighbors the adjacency will not come up. > Other times those neighbors work fine, and it's unclear whether the MTU is > coming into play, however those neighbors do have MTU of 9000. Maybe it is worth checking that you configured the MTU for L2 and for L3 on these Cisco devices.