We have MPLS and VPLS running, and our set mtu on MPLS interface is 1526, and VPLS are 1508, we would like to increase this to 1600, I have noticed the interface are also at 1590, should i change all interfaces to 1600 manually and change the MPLS mtu to 1600?
thanks in advance.
Whatever your set vpls mtu, mpls mtu must be higher by 4 bytes.
Thank you for the response, but how can i test 1508 on VPLS, i tried pinging from a Mikrotik connected to one end of VPLS circuit to an ip on other end, but it cannot ping.
Does vpls tunnel is tagged with some vlan? Or it’s just bridged with interface bridge with IP address? Does vpls tunnel is established on both sides? It is semi connection.
vpls is established, i can ping with 1500, and there is one vlan interface on this vpls tunnel, i have increased advertise mtu to 1526, and also MTU to 1526 to see if it allows bigger packets, but it would fragment. and i have put IP address on both ends to test.
Can you ping with 1500 payload with df bit?(without fragmentation)
yes 1500, do-not-fragment is fine, anything above does not work.