Step 1 Configure port lane mode before set port speed. To make this configuration effective, users have to restart PICOS service after the configuration.
ovs-vsctl set-port-lane-mode {all | <port_number>} <0|1>
all | <port_number>: specifies the port number. all indicates to configure for all ports. <port_number> indicates the port number on the front panel, for example, number 10 represents port xe-1/1/10.
0|1: specifies the port lane mode. 0 indicates 8 lanes, supporting port speed 400Gb/s. 1 indicates 4 lanes, supporting port speed 100Gb/s.
By default, the port lane mode is 0.
The following command configures the lane mode of port xe-1/1/10 to 1 to support speed 100Gb/s.
admin@PICOS-OVS:~$ ovs-vsctl set-port-lane-mode 10 1 Port 10 has been set lane_mode=1! Please reboot for the change to take effect!
Step 2 Restart PICOS service after the configuration to make the configuration effective.
admin@PICOS-OVS:~$ sudo systemctl restart picos
Step 3 Show port information. From the show result, we can see that lane mode of port xe-1/1/10 has been set to 1.
admin@PICOS-OVS:~$ ovs-vsctl show-valid-port Front Sub BreakOut IfIndex Quad-Group Interface-Name Lane-Mode Configurable-Speed ----- --- -------- ------- ---------- -------------- --------- ------------------ 1 1 False 129 N/A xe-1/1/1 0 400G,100G 2 1 False 130 N/A xe-1/1/2 0 400G,100G 3 1 False 131 N/A xe-1/1/3 0 400G,100G 4 1 False 132 N/A xe-1/1/4 0 400G,100G 5 1 False 133 N/A xe-1/1/5 0 400G,100G 6 1 False 134 N/A xe-1/1/6 0 400G,100G 7 1 False 135 N/A xe-1/1/7 0 400G,100G 8 1 False 136 N/A xe-1/1/8 0 400G,100G 9 1 False 137 N/A xe-1/1/9 0 400G,100G 10 1 False 138 N/A xe-1/1/10 1 400G,100G 11 1 False 139 N/A xe-1/1/11 0 400G,100G 12 1 False 140 N/A xe-1/1/12 0 400G,100G .......
Step 4 Configure the port speed.
admin@PICOS-OVS:~$ ovs-vsctl add-port br0 xe-1/1/10 admin@PICOS-OVS:~$ ovs-vsctl set interface xe-1/1/10 options:link_speed=100G
Step 5 Show bridge information. From the result, we can see that the link speed of port xe-1/1/10 has been set to 100G.
admin@PICOS-OVS:~$ ovs-vsctl show
ab0f08dc-9262-43f1-9894-d82c62827a06
Bridge "br0"
Port "br0"
Interface "br0"
type: internal
Port "xe-1/1/25"
tag: 3
Interface "xe-1/1/25"
type: "pica8"
Port "xe-1/1/10"
Interface "xe-1/1/10"
options: {link_speed="100G"}
Port "xe-1/1/26"
tag: 4
Interface "xe-1/1/26"
type: "pica8"