cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements

Cisco Community Designated VIP Class of 2020

220
Views
10
Helpful
6
Replies
Frequent Contributor

3504 Dynamic Interfaces / Physical Interfaces

Hi Folks, 

 

In the past when working with WLCs the interfaces have always been configured as LAG / trunk with the dynamic interfaces/vlans all going through the same LAG.

Can I have say some ports configured in a lag and then the left over physical ports potentially used for a specific dynamic interface? E.G for a dmz

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Master

Re: 3504 Dynamic Interfaces / Physical Interfaces

The answer is yes. When you disable LAG, when you create interfaces or edit already existing interfaces, you define what ports are used. Only one interface on the WLC can be set to native but not necessary. If you have more than one interface assigned to a port, then that port has to be connected to a trunk port. You might as well just connect to all trunk ports in case you want to adjust in the future. Vlan tagging is defined on the WLC and has to match on the switch port.
-Scott
*** Please rate helpful posts ***

View solution in original post

6 REPLIES 6
Highlighted
VIP Advisor

Re: 3504 Dynamic Interfaces / Physical Interfaces

I take that as a separate segment, not you looking in exiting LAG, then you should be able to.

But again it depends on the use case.

 

BB
*** Rate All Helpful Responses ***
Frequent Contributor

Re: 3504 Dynamic Interfaces / Physical Interfaces

Yeah completely separate. Only traffic exiting out this interface would be a specific VLAN /SSID traffic. Everything else would exit the LAG
VIP Advisor

Re: 3504 Dynamic Interfaces / Physical Interfaces

personally not implemented never come across this requirement, this is good requirement.

 

as long that VLAN untagged in LAG, Only Tagged other Port it should work.

 

here is the reference :

 

https://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-vlan/68100-wlan-controllers-vlans.html

BB
*** Rate All Helpful Responses ***
Hall of Fame Master

Re: 3504 Dynamic Interfaces / Physical Interfaces

Well, from what I know, you either use LAG or you don’t. You will not be able to define a port channel for a single port different from the other ports. Also the WLC uses the default src ip dest load balancing. For your use case, you should not use LAG but define the port for that traffic. This way your management and other traffic could be primary on port 1 and backup on port 2 and for your special interface you can have that primary on port 3 and if you wish to have redundancy use port 4 as backup.
-Scott
*** Please rate helpful posts ***
Frequent Contributor

Re: 3504 Dynamic Interfaces / Physical Interfaces

Thanks Scott, assuming if i went down that route using say port 1, this would still have the ability to carry multiple vlans? Not clued up on the inner workings of the WLC, does it tag traffic with the corresponding dynamic interface vlan before sending it out onto the attached LAN?
Hall of Fame Master

Re: 3504 Dynamic Interfaces / Physical Interfaces

The answer is yes. When you disable LAG, when you create interfaces or edit already existing interfaces, you define what ports are used. Only one interface on the WLC can be set to native but not necessary. If you have more than one interface assigned to a port, then that port has to be connected to a trunk port. You might as well just connect to all trunk ports in case you want to adjust in the future. Vlan tagging is defined on the WLC and has to match on the switch port.
-Scott
*** Please rate helpful posts ***

View solution in original post

CreatePlease to create content
Content for Community-Ad

August's Community Spotlight Awards