We are in the process of migrating our MPLS and DMVPN network to SDWAN. Our MPLS and DMVPN routers all had an mtu size of 1400 configured for the VPN tunnel interfaces.
Now we use the same transport networks for SDWAN, so the same MPLS and Internet circuits are being used for the SDWAN devices. We are just replacing the MPLS/DMVPN routers with SDWAN devices.
Can I assume we are supposed to configure similar mtu settings? Or better yet how do we go about finding the right mtu size for the SDWAN overlay tunnels?
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Sorry I'm having a hard time understanding this. I still don't know how to troubleshoot mtu issues from the dashboard and find the right mtu size.
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