GE Multilink ML3000, Instruction Manual, Page: 280 / 356

17–4 MULTILINK ML3000 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL
LACP CHAPTER 17: LACP
Figure 17-3: Another Incorrect LACP Connection
In this figure, even though the connections are from one module to another, this is still not
a valid configuration (for LACP using 4 ports) as the trunk group belongs to two different
VLANs.
However – on each switch, the set of ports can belong to same VLANs as shown in the
figure below. While the ports belong to the same VLANs, there is no common VLAN
between the switches and hence the LACPDU cannot be transmitted. This configuration
does not work in the LACP mode.
Figure 17-4: No Common VLAN Between 2 Ports
In the figure above, there is no common VLAN between the two sets of ports, so packets
from one VLAN to another cannot be forwarded. There should be at least one VLAN
common between the two switches and the LACP port groups.