Mikrotik V7 OSPF MTU Issue

RouterOS General
1

Dear Team,

Thanks in advance.

I am experienceing Mikrotik OSPF issue with Large MTU.
MTU=1500 working fine. But MTU=9000 OSPF not established.

ospf-instance-1 { version: 2 router-id: 10.62.165.254 } ospf-area-1 { 0.0.0.1 } interface { p2p 10.62.165.26%UP-LINK } neighbor { router-id: 10.62.145.255 state: ExStart } timeout

ospf-instance-1 { version: 2 router-id: 10.62.165.254 } ospf-area-1 { 0.0.0.1 } interface { p2p 10.62.165.26%UP-LINK} neighbor { router-id: 10.62.145.255 state: ExStart } state change to Down


Looking for solution. Please help.

Thanks

2

Can you ping between the two routers with the “dont fragment” flag active and mtu 9000?

3

Dear,

ping is ok with dont-frag and size 9000.


Thanks
Screenshot 2023-06-23 at 9.51.38 AM.png