Using Multi-Chassis Link Aggregation (MLAG), two blade switches (MLAG peer switches) act like a single blade switch when forming link bundles toward servers and external switches. These MLAG peer switches connect through an Inter Peer Link (IPL), which is used primarily for exchanging MLAG control information between peer switches. It can also carry data traffic for devices only attached to one of the MLAG peers.
MLAG allows a blade server host to uplink to two blade switches for physical diversity, while only having a single bundle interface to manage. MLAG is supported on the MBM-XEM-100, SBM-25G-100, MBM-XEM-002, and MBM-GEM-004. See Image | 
