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- Ethernet interfaces will be kept down when using front ports as FEX NIF on N9K-C93180YC-FX3 (FEX mode) connected to any front port on parent Nexus switch.
- Using front ports as FEX NIF on N9K-C93180YC-FX3 (FEX mode) connected to any front port on parent Nexus switch is not supported. An example would be: N9K-C93180YC-FX3 (FEX mode) Eth1/1 Eth1/1 N9K-C93180YC-FX3 (NX-OS 10.2.5)
- Use only uplinks on N9K-C93180YC-FX3 (FEX mode) towards parent Nexus switch (uplinks). - If you want to use the front ports on the parent Nexus switch, you can use breakout cable. - Currently, documentation missing the following statement: "N9K-FX3 in FEX mode support a breakout cable only from FEX NIF ports (Eth1/49-54) to parent switch FRONT ports". - This statement will be added to Additional Notes section in Nexus 9000 Series Switch FEX Support website: https://www.cisco.com/c/dam/en/us/td/docs/Website/datacenter/fexmatrix/fexmatrix.html
Lab test: ++ N9K-FX3-1 [ 4 x 10G ] Breakout [40GB] N9K-FX3-2 -------------------------------------------------------------------------------- Ethernet VLAN Type Mode Status Reason Speed Port Interface Ch # -------------------------------------------------------------------------------- Eth1/5 1 eth fabric up none 10G(D) 1 Eth1/6 1 eth fabric up none 10G(D) 1 Eth1/7 1 eth fabric up none 10G(D) 1 Eth1/8 1 eth fabric up none 10G(D) 1 FEX: 101 Description: FEX0101 state: Online FEX version: 10.2(6) [Switch version: 10.2(6)] Extender Model: N9K-C93180YC-FX3, Extender Serial: FLM27160T0C Part No: 73-102931-02 pinning-mode: static Max-links: 1 Fabric port for control traffic: Eth1/7 FCoE Admin: false FCoE Oper: true FCoE FEX AA Configured: false Fabric interface state: Po1 - Interface Up. State: Active Eth1/5 - Interface Up. State: Active Eth1/6 - Interface Up. State: Active Eth1/7 - Interface Up. State: Active Eth1/8 - Interface Up. State: Active ++ N9K-FX3-1 [ 4 x 25G ] Breakout [100GB] N9K-FX3-2 -------------------------------------------------------------------------------- Ethernet VLAN Type Mode Status Reason Speed Port Interface Ch # -------------------------------------------------------------------------------- Eth1/9 1 eth fabric up none 25G(D) 1 Eth1/10 1 eth fabric up none 25G(D) 1 Eth1/11 1 eth fabric up none 25G(D) 1 Eth1/12 1 eth fabric up none 25G(D) 1 FEX: 101 Description: FEX0101 state: Online FEX version: 10.2(6) [Switch version: 10.2(6)] Extender Model: N9K-C93180YC-FX3, Extender Serial: FLM27160T0C Part No: 73-102931-02 pinning-mode: static Max-links: 1 Fabric port for control traffic: Eth1/12 FCoE Admin: false FCoE Oper: true FCoE FEX AA Configured: false Fabric interface state: Po1 - Interface Up. State: Active Eth1/9 - Interface Up. State: Active Eth1/10 - Interface Up. State: Active Eth1/11 - Interface Up. State: Active Eth1/12 - Interface Up. State: Active
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