i want to connect my router through cisco sfp to a cisco 3750 switch in 1Gbps Mode
The Router led port show active but cisco switch do not accept connection
and there is a one way traffic that shown on mikrotik statistics
can anyone help me
Try to force-set 1G speed on the SFP interface.
What i do most times is to play around with the speed and duplex settings. Setting 1Gb or Auto on each side, one at a time while checking the connectivity. What works most times for me is Auto with full duplex on Mikrotik and 1Gb/full duplex hard-coded on Cisco.
I use multiple CCRs with multiple C3750s with 10gbit modules (X2s on the cisco side, sfp+ on the ccr side).
They’ve always worked right away without an issue (assuming proper configuration on both devices).
Is your switch configured properly?
Is the switch port configured as an access port or a trunk?
Can you post your switch port configuration (sh int gi X/0/X) and port stats (sh int gi X/0/X) ?
Can you post your router configuration?
my router works fine in 10Gbps mode
My problem with 1Gbps SFPs
I try everything!
but status show connected in mikrotik but disconnected in cisco switch and but no traffic passed from link
Interface on the Cisco MUST be forced to 1G/Full (speed nonegotiate), and if it’s a copper/sfp combo port, set to use the sfp.
What’s the running configuration of the interface on the Cisco? Either the Cisco’s port isn’t configured correctly, or you have incompatible SFP modules.
Can you post a ‘show run interface x’ and a ‘show int x transceiver properties’ ?
I had same problem that you with CCR1072 in production. No error, link ok but no transfer data or packets.
This is your config need:
/interface ethernet set sfpX auto-negotiation=no speed=1Gbps
Very important NO auto-negotiationa and forced speed at 1Gbps.