You connect Ethernet links to four ports on slot 1 of a new Cisco Nexus 5548UP switch and receive the following error: Which of the following is most likely true?

Last Updated on August 2, 2021 by Admin

You connect Ethernet links to four ports on slot 1 of a new Cisco Nexus 5548UP switch and receive the following error:

ERROR: Ethernet range starts from first port of the module
ERROR: FC range should end on last port of the module

Which of the following is most likely true?

  • Slot 1 does not support unified ports.
  • No more Ethernet ports are available on the module.
  • The Ethernet links were connected in an incorrect port order.
  • FC links are already connected to slot 1.
  • Slot 1 does not support Ethernet links.
Explanation:

Most likely, the Ethernet links were connected in an incorrect port order if you receive the error message in this scenario when you connect Ethernet links to four ports on slot 1 of a new Cisco Nexus 5548UP switch. Unified ports are ports that can be either Ethernet or Fibre Channel (FC) ports. Cisco Nexus switches that support unified ports require that Ethernet links be connected from the beginning of the port range forward and that FC links be connected from the end of the port range backward. Therefore, in this scenario, the Ethernet links would need to be connected to port 1/1, port 1/2, port 1/3, and port 1/4.
As a further example, if you were to connect a single Ethernet link and a single FC link to slot 1 of a Cisco Nexus 5548UP switch that has no other links connected, you must connect the Ethernet link to port 1/1 and the FC link to port 1/32. Slot 1 of a Cisco Nexus 5548UP switch contains 32 unified ports. If you were to then connect an additional Ethernet link to slot 1, that link must be connected to port 1/2. If you were to connect an additional FC link to slot 1, that link must be connected to port 1/31. Link additions should continue in that way until the Ethernet range ends where the FC range begins and no more ports are available in the slot.
There is nothing in this scenario to indicate that FC links are already connected to slot 1 of the Cisco Nexus 5548UP switch. However, even if FC links were already connected to slot 1 of the switch, the error would still indicate that the Ethernet links were connected in an incorrect port order.
It is not likely that there are no more Ethernet ports available on the switch. In this scenario, you have already connected four Ethernet links to the switch when the error message occurs. There would have to have been at least five Ethernet links available on the switch in this scenario in order for the switch to have detected the incorrect port order.
Slot 1 on the Cisco Nexus 5548UP switch supports Ethernet links because slot 1 on the Cisco Nexus 5548UP switch contains only unified ports. Other Nexus switches might contain different port configurations. For example, on the Cisco Nexus 5596T, only the last 16 ports are unified ports.

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