I have a S-35LC20D SFP module connected to a CCR1036-12-4S and working with my ISP. I want to change to a CCR1072-1G-8S+ the same configuration with the same SFP module but the interface show “no link”. CCR1036-12G-4S has 6.29.1 RouterOS and the CCR1072-1G-8S+ has 6.39 RouterOS version. When I turn off the “auto negotiation” in the 1072 SFP+ port then show “link ok” but The router can’t ping the other side neither establish the bgp peer session.
The router just have a vlan on the SFP port and BGP peer
/interface vlan
add arp=enabled disabled=no interface=sfp1 l2mtu=1586 mtu=1500 name=vlan.3405 use-service-tag=no vlan-id=3405
/routing bgp peer
add in-filter=default_in name="BACKUP" remote-address=10.111.154.5 remote-as=19114 ttl=default
/ip address
add address=10.111.154.6/30 comment="BACKUP" interface=vlan.3405 network=10.111.154.4
this is the 1036 interface
