setting up new FEX switches but po already exists on switches

[robertkwild]

hi all,

we have 2 7000's and obviously they have previously been set up on both switches as when i do on both switches

sh int po101

switch 1 has no members but switch 2 has 2 members ie ethernet ports assigned to this po say for ex 1/0/1 1/0/2

shall i just run on switch 2 as i dont want it configured on switch 2, i only want it on switch 1

default int 1/0/1,1/0/2

no po101

thanks,

rob

[balaji.bandi]

FEX in Dual home - means you connect both the nexus Switches for high availability

FEX in single home connect to only 1 Parent Switch

if that is your requirement yes you can connect to only 1 Switch.

But failure scenario - if that parent switch go down, the FEX go down too.

[robertkwild]

Thanks I want to single home not dual home

Is it wise then to delete the po and flatten the ethernet ports for switch 2 as I only want to connect to switch 1 IE

Default int 1/0/1,1/0/2
No po101

Or can I leave the config on switch 2 but not plugged in switch 2, is that ok to do?

[balaji.bandi]

If the requirement only 1 switch, i remove other switch config, so if any other purpose can be used - for the complete and cleaness.

[robertkwild]

another question, how come the FEX po is not trunked

Po103 -- connected 1 full a-10G --

how come its connected to vlan 1 but then when i change port eth103/1/1 to vlan 170 it works as when i plug in a pc on that port it works

[balaji.bandi]

as per OP you have 101 for FEX right ?

show interface port-channel 101 switchport  (this will show you all the VLAN) example :

Operational Mode: fex-fabric
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Allowed: 1-4094

Po103 you have created  as trunk - then all the vlan should allowed in the Trunk

For end port always default is VLAN1 - if you like to have access vlan 170- then you need to change access vlan 170.

[Ruben Cocheno]

@robertkwild 

I would dual home with FEXs if you have that capability, but in not mandatory.

[robertkwild]

so am i right in thinking that FEX all the trunks go down the native vlan ie 1 where as normally when you configure a port and you want it trunked it actaully says trunk instead of 1, thats why im confused?