05-08-2019 02:48 PM
This is the situation: let´s say that a VSS (SW6500´s) has a VLAN 37 passing in a few TRUNKS working perfectly. But now, we need to configure a PortChannel L3 (Let´s say PortChannel 100) and also need to create a sub interface there such as "interface PortChannel 100.37 with a given ip address in the subInterface. Now, the question is: when configuring command "encapsulation dot1Q" within the subinterface, can we use ID 37 ?, will this be allowed by the switch? VSS 6500
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05-09-2019 05:36 AM
Hello,
If you have a vlan in your vlan datadase, it is not eligible for a sub interface:
6500(config-subif)#encapsulation dot1q 50
Command rejected: VLAN 50 not available
Just use a trunk port with an SVI instead.
Hope that helps!
05-08-2019 07:46 PM
05-09-2019 05:36 AM
Hello,
If you have a vlan in your vlan datadase, it is not eligible for a sub interface:
6500(config-subif)#encapsulation dot1q 50
Command rejected: VLAN 50 not available
Just use a trunk port with an SVI instead.
Hope that helps!
05-09-2019 06:14 AM
05-09-2019 06:37 AM
Good point Francesco, We have a SW6509 equipped with "Supervisor Engine 2T 10GE w/ CTS (Acti VS-SUP2T-10G"., as in the 6800 Switch. Please, let me ask one more question asuming I may configure the subinterface using an already taken ID,... will the traffic coming in VLAN 37 and subinterface (ID 37) be in the same broadcast domain or these traffics would be in different brodcast domains?
Thanks so much for taking time to answer this.
05-09-2019 06:39 PM
05-09-2019 06:23 AM
Thanks so much. This is what I thought it would be and you proved it as I saw the outcome for the command "encapsulation dot1q". But Francesco Molino says it depends on the SUP (With SUP720-10G it wasn't possible to configure. But on 6800 it is working).
Thanks to both of you for the contribution.
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