This is the first of three posts on MXL blade switches. While this gives an overview of the switch, the other two posts give configuration details for setting these up as Data and iSCSI fabrics, within M1000e Blade Chassis. The posts can be accessed here:
The MXL switch for M1000e Blade Chassis, is a 10/40G, L2/L3 switch. It has 32 internal ports, which can operate in 10/1GE mode. On the external plane, it has
By default, the 40GbE ports on a 2-Port 40GbE QSFP+ module come up in 4x10GbE (quad) mode as eight 10GbE ports.For the external ports, it is worthwhile remembering that the numbering starts from the bottom, and assumes 2 port QSFP+ module in each slot (for numbering only). Since each QSFP/40G port can be split into 4 x 10G ports (via splitter cables), each port is thus assigned a numbering block of 4.
Thus, if you have a 4 port module in slot 0, it would be numbered 41-44. The range 45-48 will be un-utilized, and the module in slot 1 will start at 49 as usual. QSFP+ built-in ports are set to 40Gb by default while expansion module QSFP+ ports are set to 10Gb ports by default. To change a port from 10Gb mode to 40Gb mode, use the command.
.If you see an issue where the MXL switch refuses to boot when placed in the M1000e chassis, be advised that this is not a hardware issue. the previous MXL firmware version, specifically version 126.96.36.199, does not support M1000e midplane version 1.0. This however, is resolved in the new revision 188.8.131.52be mindful that this is only relevant where you have midplane version 1.0 (check in CMC console via $getsysinfo).