i bond My Core Mikrotik with Cisco 2950T,
//Core Mikrotik: name="mbd-bond" mtu=1500 mac-address=00:0C:42:20:9B:8F arp=enabled
slaves=ether4,LAN DIST mode=broadcast primary=none link-monitoring=none
arp-interval=100ms mii-interval=100ms down-delay=0s up-delay=0s
lacp-rate=30secs
//Cisco2950T : Group: 1
----------
Group state = L2
Ports: 2 Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol: PAgP
and my all branch mikrotiks are connected with cisco2950T.