NOKIA 7250 IXR-e Switch SFP28 Interface Rate Configuration

When using the NOKIA 7250 IXR-e 2QSFP28 8SFP28 24SFP+ switch, Moduletek Limited Labs observed that the SFP28 interface of the switch is configured differently from the SFP+ interface in terms of rate, and it is configured in terms of an interface group, and the next step is to bring you together to learn about the way to configure the rate of the SFP28 interface of the switch.

NOKIA 7250 IXR-e 2QSFP28 8SFP28 24SFP+ The default rate of the SFP28 interface of the switch is 25G, and according to the method of configuring the rate of the SFP+ interface, the execution of the command “configure port 1/1/25 ethernet speed 10000” configuration, the rate is prompted with the FEC mode does not match; the interface FEC mode is configured as no-fec, and the rate of other interfaces is prompted with the FEC mode does not match;

Figure 1 Interface rate configuration error

According to Nokia official information “Nokia 7250 Interface_Configuration_Guide_23.10.R1”, SFP28 interface is backward compatible with 10G, 4 interfaces as a group, you need to shut down the interfaces before modifying the rate, and the rate of interfaces in the same interface group must be the same, i.e., modifying one of the interfaces to 10G, the rate of the other three interfaces is also automatically configured to 10G, and the rate of the other interfaces is also automatically configured to 10G. The rate of the other three interfaces is also automatically configured as 10G.

Figure 2 SFP28 Interface Rate Limit

SFP28 interface group display

Figure 3 SFP28 interface group display

According to the above information combined with practical tips, turn off the four interfaces of the same interface group at the same time, and configure them as no-fec mode at the same time, and then modify the rate of one of the interfaces to 10G, at which time all four interfaces in the interface group are configured to 10G rate. After the configuration is completed, note that the interfaces are turned on again.