Topology 4 - Redundant Uplink Switch Topology - Supermicro SSE-F3548S User Manual

5.2.4 Topology 4 – Redundant Uplink Switch Topology
Uplink Switch 1
Switch A
In Figure MLAG-4, Switch A and Switch B are peer switches in the MLAG. Switches A and B are connected
through an IPL port channel interface.
The server is connected to both the MLAG peer switches through regular LACP port channel interface.
Uplink Switch 1 and Uplink Switch 2 are connected to MLAG peer switches Switch A and Switch B through
the MLAG port channel interface.
On the Switch A and Switch B sides, the ports connected to the server are configured with the same
MLAG enabled port channel number. Similarly, the ports connected to Uplink Switch 1 and Uplink Switch
2 are configured with the same MLAG port channel number.
The reason for MLAG in the uplink switches is to make sure the uplink switch does not send
the same packet (broadcast or multicast) to both the MLAG peer switches.
MLAG Port Channel
IPL - PO
MLAG Port Channel
Server
Figure MLAG-4
Supermicro SSE-F3548S/SSE-F3548SR Configuration User's Guide
Uplink Switch 2
Switch B
LACP PO
152