Hi im trying to make vlans talk to eachother, i have 2 3560 switches, i put addresses on the vlans just not sure why its protocol is down cuz i think its supposed to be up/up, also how do i know its working?

Switch#sh ip interfa brie vlan 10
Interface              IP-Address      OK? Method Status                Protocol
Vlan10         YES manual up                    down
  • @erosales Your help is very welcome, but you should put questions here in comments. That way other people can search easier for answers to this question.
    – Ron Trunk
    Jun 28, 2016 at 20:03
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    Aug 14, 2017 at 14:57

3 Answers 3


The VLAN interface protocol would be up if you would have a port that is up or if those VLANs were present on a trunk link.

3560 is a Layer 3 switch so to route between vlans or you need to do is to type 'ip routing' command and assign proper gateways on the end devices.

Take a look at D-Link L2 & L3 Network Setup

That was a similar quesiton to yours.


  • 1
    "3560 is a Layer 3 switch..." That depends on the license level installed on the switch.
    – Ron Maupin
    Jun 28, 2016 at 21:57
  • Oh really? Good to know. Thanks! Does it goes the same for 3750?
    – reybanger
    Jun 28, 2016 at 22:00
  • 2
    Yes. Any of the 2K, 3K, or 4K switches can be ordered with just LanBase. IP routing requires at least IPBase, and more advanced routing features require other license levels.
    – Ron Maupin
    Jun 28, 2016 at 22:02
  • 2
    Cisco 3560 are layer 3 switches no matter license. I bet the guy was missing 'ip routing'. Jun 28, 2016 at 22:27

The interface could be down because you have no ports on that VLAN that are up.

Or, you have already configured another VLAN interface on that switch. On layer 2 switches, you can only have one VLAN interface up at the same time.

If you want the two VLANs to talk to each other, you will need a router, or a layer 3 swith.


Native vlan mismmatch? Are both sides set to trunking? what are the allowed vlans on the link? encapsulation set?

Just a few things that came to mind...Also ip routing could cause the issue depending on what your network environment setup is....


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