Hello

I have a Mikrotika installed on x86.
Detected Intel 2 x 10Ge cards correctly
However, I have a LACP (bond) problem.
LACP is set between Mikrotik and Juniper switch ex3400.
Ping through the LACP passes, however, you can not even login to Mikrotik or connect to a host that is behind the router.
I also noticed that by changing the frame size to ping to 2048 it means that the ping automatically stops working.
Ping will start to go again as you change the MTU from 1500 to 1490 - 1494 on the host's network card.
Change of MTU on LACP (bond) or/and network cards to lower ones, e. g. 1492 unfortunately nothing is possible.

Have any of you encountered such a problem and could help solve the problem? Unfortunately, my ideas are over and I do not know how to solve this problem.

Disconnect one of the Ethernets on the LACP. Then try loggin in.

North Idaho Tom Jones

Nothing happen the same thing

I also found http://xapmc.net/index.php/LACP_juniper ... krotik_CCR but also problem still exist.

I try change MTU from 1480 till 1530 but nothing happen ;(

Any idea ?

Just a try: could you check RouterOS 6.20 or something near?

In some ~6.3x a problem appeared for us with vlans over bonding (something with mtu/l2mtu changes in later versions) - maybe it's your case...