HP Mellanox SX1018 Mellanox MLNX-OS User Manual for SX1018HP Ethernet Managed - Page 58

Ethernet Switching

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5 Ethernet Switching Rev 1.6.2 5.1 Interface Interface Ethernet have the following physical set of configurable parameters • Admin state - enabling or disabling the interface. • Flow control - admin state per direction (send or receive) • MTU (Maximum Transmission Unit) - (1518-9216 bytes) • Speed - 1/10/40/56Gbps (depends on the interface type and system) • Description - user defined string • Module-type - the type of the module plugged in the interface 5.1.1 Break-Out Cables The Break-out Cable is a unique Mellanox capability, where a single physical 40Gbps port is divided into 2x10Gbps or 4x10Gbps ports. It maximizes the flexibility of the end user to use the Mellanox switch with a combination of 10Gbps and 40Gbps interfaces according to the specific requirements of its network. Certain ports cannot be split at all and there are ports which can be split into 2 ports only. Splitting a port changes the notation of that port from x/y to x/y/z with "x/ y" indicating the previous notation of the port prior to the split and "z" indicating the number of the resulting 10G port (1,2 or 1,2,3,4). Each sub-physical port is then handled as an individual port. For example: splitting port 10 into 4 will give the following new ports: 1/10/1, 1/10/2, 1/10/ 3, 1/10/4. Figure 8: Break-Out Cable Mellanox Technologies 58

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Rev 1.6.2
Mellanox Technologies
58
5
Ethernet Switching
5.1
Interface
Interface Ethernet have the following physical set of configurable parameters
•
Admin state - enabling or disabling the interface.
•
Flow control - admin state per direction (send or receive)
•
MTU (Maximum Transmission Unit) - (1518-9216 bytes)
•
Speed - 1/10/40/56Gbps (depends on the interface type and system)
•
Description - user defined string
•
Module-type - the type of the module plugged in the interface
5.1.1
Break-Out Cables
The Break-out Cable is a unique Mellanox capability, where a single physical 40Gbps port is
divided into 2x10Gbps or 4x10Gbps ports. It maximizes the flexibility of the end user to use the
Mellanox switch with a combination of 10Gbps and 40Gbps interfaces according to the specific
requirements of its network. Certain ports cannot be split at all and there are ports which can be
split into 2 ports only. Splitting a port changes the notation of that port from x/y to x/y/z with “x/
y” indicating the previous notation of the port prior to the split and “z” indicating the number of
the resulting 10G port (1,2 or 1,2,3,4). Each sub-physical port is then handled as an individual
port. For example: splitting port 10 into 4 will give the following new ports: 1/10/1, 1/10/2, 1/10/
3, 1/10/4.
Figure 8: Break-Out Cable