Does Cat3850 support sub-interface.

[mediaos718]

Does the Cat 3850 support sub interface? As I do not want to use trunking.

NY-Switch(config)#interface tenGigabitEthernet 1/1/1.30 ?
% Unrecognized command

[Georg Pauwen]

Hello,

unfortunately, it doesn't. Here is an excerpt from the link below:

The switch does not support Layer 3 trunks; you cannot configure subinterfaces or use the encapsulation keyword on Layer 3 interfaces. The switch does support Layer 2 trunks and Layer 3 VLAN interfaces, which provide equivalent capabilities.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/vlan/configuration_guide/b_vlan_3se_3850_cg/b_vlan_3se_3850_cg_chapter_0110.html

[Julio E. Moisa · Accepted solution]

Hi

Sub-interfaces are supported on firewall and routers. Now you can use VLAN/SVI through a trunk in order to create Layer 3 connectivity. 

[darren-carr]

Hi,

Are you able to use traffic-shaping for the vlan interface if using this as a layer 3 transit connection between two endpoints?

We have a situation were we need to enable traffic-shaping over a layer 2 trunk as we need to maintain separate routing tables (VRFs). Not sure of another way I can shape the traffic over the trunk if I can't use this in an SVI?

Thanks