In the example used in this guide, interface eth1/1/9 is connected to a 10 GbE adapter on a PowerEdge server used as a jump box. On S5248F-ON, this interface must be changed from its native speed of 25 GbE to 10 GbE using the port-group command.
To determine the port-group-to-interface mapping, run the show port-group command:
S5248F-Leaf1A# show port-group
Port-group Mode Ports FEM
port-group1/1/1 Eth 25g-4x 1 2 3 4 -
port-group1/1/2 Eth 25g-4x 5 6 7 8 -
port-group1/1/3 Eth 25g-4x 9 10 11 12 -
port-group1/1/4 Eth 25g-4x 13 14 15 16 -
port-group1/1/5 Eth 25g-4x 17 18 19 20 -
port-group1/1/6 Eth 25g-4x 21 22 23 24 -
port-group1/1/7 Eth 25g-4x 25 26 27 28 -
port-group1/1/8 Eth 25g-4x 29 30 31 32 -
port-group1/1/9 Eth 25g-4x 33 34 35 36 -
port-group1/1/10 Eth 25g-4x 37 38 39 40 -
port-group1/1/11 Eth 25g-4x 41 42 43 44 -
port-group1/1/12 Eth 25g-4x 45 46 47 48 -
port-group1/1/13 Eth 100g-2x 49 50 -
port-group1/1/14 Eth 100g-2x 51 52 -
port-group1/1/15 Eth 100g-1x 53 -
port-group1/1/16 Eth 100g-1x 54 -
port-group1/1/17 Eth 100g-1x 55 -
port-group1/1/18 Eth 100g-1x 56 -
In the output above, interface eth1/1/9 is in port-group 1/1/3 which is at its default setting of 25 GbE. The commands to change the interfaces in port-group 1/1/3 from 25 GbE to 10 GbE are as follows:
S5248F-Leaf1A# configure terminal
S5248F-Leaf1A(config)# port-group 1/1/3
S5248F-Leaf1A(conf-pg-1/1/3)# mode eth 10g-4x
Verify the settings with the following command:
S5248F-Leaf1A(conf-pg-1/1/3)# do show port-group
Port-group Mode Ports FEM
port-group1/1/1 Eth 25g-4x 1 2 3 4 -
port-group1/1/2 Eth 25g-4x 5 6 7 8 -
port-group1/1/3 Eth 10g-4x 9 10 11 12 -
(Output truncated)
The four interfaces in port-group1/1/3 are now set to 10 GbE.
After the port group mode change is made, the interface naming changes from eth 1/1/x to eth 1/1/x:n, where x is the physical port number, and n is the logical port number. In this example, changing port group 1/1/3 to 10 GbE also changes the affected interface names to eth1/1/9:1– 1/1/12:1.
Port-group configuration options for the S5248F-ON are shown in the table below.
Port group number | Native physical interface name | Native speed | Other supported speeds | Non-native logical interface name |
1/1/1 | Eth 1/1/1-1/1/4 | 25g-4x | 10g-4x | Eth 1/1/x:1 |