port type network/trunk and fex

[petercinvest]

Hello,

besides peer link interface, what are other interfaces need o implement port type network?

does every trunk port need to be port type trunk?

I have some fex port, those starts with E123/1/11......does fex port always access port, can it be trunk port also? thanks

[B.kablawi90]

Hi,

Network is not a port type, it's spanning-tree mode.

Yes in the upstream switch you supposed to configure the spanning-tree mode as 'network' for the trunk links between the switches

interface e1/1

swichport mode trunk

spanning-tree mode network

When attaching a fex to an upstream switch, the port from the switch downstream should me configured as switchport mode fex in order to be associated to a fex.

interface e2/1

switchport mode fex

fex associate 101

then you can configure the port of the fex as trunk or access port

int e101/1/1 

switchport mode trunk (and here no need to configure STP mode network because this interface is supposed only to be connected to a host not a switch!)

checkout this link 
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus2000/sw/configuration/guide/rel_4_0_1a/NX2000CLIConfig/FEX-features.html#32873