Planning Flexconnect Local Switching with 2 Remote Offices

Heiko Kelling · ‎08-29-2016

Hi all,

I´m planning this layout with Cisco 2504 controller and 1832 AP´s:

The WLANs should be switched locally with FlexConnect local switching. I have read a lot of documentations about FlexConnect but I´m not sure which interfaces I need on the controller.

In my example: Do I need all the vlans (11-13,21-23) configured as Interfaces on the controller?

Can anybody give me a configuration example for a wlan configured as Flexconnect local switching?

Thank you all!

Francesco Molino · ‎08-29-2016

Hi

You don't need to create virtual interfaces on your wlc with all local vlans.

However, you have to create the vlan mapping on your wlan configuration.

There are several documentations done. Let me paste 2 of them. The 1st one is clear and simple document on how to configure Flexconnect:

- https://supportforums.cisco.com/document/98646/wireless-lan-flexconnect-configuration-example

- http://www.cisco.com/c/en/us/td/docs/wireless/controller/7-6/configuration-guide/b_cg76/b_cg76_chapter_010001000.html

Thanks

PS: Please don't forget to rate and mark as correct answer if this answered your question

Thanks
Francesco
PS: Please don't forget to rate and select as validated answer if this answered your question

Heiko Kelling · ‎08-30-2016

Hi,

thank you again for your patience for a wireless newbie, supportlan.

Today I have tested a Flex Connect WLAN with my WLC 2504 a Cisco 3750 switch and a 1832 AP.

I have followed all the instructions of your documents and by now it is not working perfectly.

Please let me show you me issue:

These are my WLANs, I have selected SEK-JCR-L and SEK-JCR-S for Flexconnect WLANs:

Enable Flex Connect for both WLANs:

Enable FlexConnect for the AP:

Native VLAN 50, everything is working fine:

WLAN-VLAN 51, WLAN-VLAN 52:

Everthing is working fine again, I can connect to both WLANs with a Wireless Client and get IP addresses from the cisco switch!

But now the problem: If I restart the AP it changes to "Flexconnect Switching to Standalone Mode!"

[*08/30/2016 17:06:52.1956] Failed to get ARP entry for WLC 10.0.250.250
[*08/30/2016 17:06:59.8032] Failed to get ARP entry for WLC 10.0.250.250
[*08/30/2016 17:07:07.4108] Failed to get ARP entry for WLC 10.0.250.250
[*08/30/2016 17:07:15.0084] Failed to get ARP entry for WLC 10.0.250.250
[*08/30/2016 17:07:20.3168] Flexconnect Switching to Standalone Mode!
[*08/30/2016 17:07:20.3168] CAPWAP State: DTLS Teardown
[*08/30/2016 17:07:25.0653] Got WLC settings(10.0.251.250) from DHCP.
[*08/30/2016 17:07:25.0753] Discovery Request sent to 10.0.250.250 with discoverAPWAP_DISCOVERY_TYPE_STATIC_CONFIG(1)
[*08/30/2016 17:07:25.0853] Discovery Request sent to 10.0.251.250 with discoverAPWAP_DISCOVERY_TYPE_DHCP(2)
[*08/30/2016 17:07:25.0853] Discovery Request sent to 255.255.255.255 with discoo CAPWAP_DISCOVERY_TYPE_UNKNOWN(0)
[*08/30/2016 17:07:34.5723] Got WLC settings(10.0.251.250) from DHCP.
[*08/30/2016 17:07:34.5723] Discovery Request sent to 10.0.250.250 with discoverAPWAP_DISCOVERY_TYPE_STATIC_CONFIG(1)
[*08/30/2016 17:07:34.5723] Discovery Request sent to 10.0.251.250 with discoverAPWAP_DISCOVERY_TYPE_DHCP(2)
[*08/30/2016 17:07:34.5823] Discovery Request sent to 255.255.255.255 with discoo CAPWAP_DISCOVERY_TYPE_UNKNOWN(0)
[*08/30/2016 17:07:44.0793] Got WLC settings(10.0.251.250) from DHCP.
[*08/30/2016 17:07:44.0893] Discovery Request sent to 10.0.250.250 with discoverAPWAP_DISCOVERY_TYPE_STATIC_CONFIG(1)
[*08/30/2016 17:07:44.0893] Discovery Request sent to 10.0.251.250 with discoverAPWAP_DISCOVERY_TYPE_DHCP(2)
[*08/30/2016 17:07:44.0993] Discovery Request sent to 255.255.255.255 with discoo CAPWAP_DISCOVERY_TYPE_UNKNOWN(0)

And can´t find the controller again.

This is my switch config:

AP is connected to fa 1/0/11 and controller is connected to fa 1/0/23.

hostname SWITCH_SEK-JCR

!
!

ip dhcp pool AP-Netz
 network 192.168.50.0 255.255.255.0
 domain-name ITC-School
 option 43 hex f104.0a00.fbfa
 default-router 192.168.50.254
 option 60 ascii "Cisco AP c1830"
!
ip dhcp pool SEK-JCR-L
 network 192.168.51.0 255.255.255.0
 default-router 192.168.51.254
!
ip dhcp pool SEK-JCR-S
 network 192.168.52.0 255.255.255.0
 default-router 192.168.52.254
!


!
interface FastEthernet1/0/1
!
interface FastEthernet1/0/2
!
interface FastEthernet1/0/3
!
interface FastEthernet1/0/4
!
interface FastEthernet1/0/5
!
interface FastEthernet1/0/6
!
interface FastEthernet1/0/7
!
interface FastEthernet1/0/8
!
interface FastEthernet1/0/9
!
interface FastEthernet1/0/10
 switchport access vlan 50
 switchport mode access
!
interface FastEthernet1/0/11
 description AP Port
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 50
 switchport trunk allowed vlan 51,52
 switchport mode trunk
!
interface FastEthernet1/0/12
!
interface FastEthernet1/0/13
!
interface FastEthernet1/0/14
!
interface FastEthernet1/0/15
!
interface FastEthernet1/0/16
!
interface FastEthernet1/0/17
!
interface FastEthernet1/0/18
!
interface FastEthernet1/0/19
!
interface FastEthernet1/0/20
 switchport mode access
!
interface FastEthernet1/0/21
 switchport mode access
!
interface FastEthernet1/0/22
 switchport access vlan 50
 switchport mode access
!
interface FastEthernet1/0/23
 switchport trunk encapsulation dot1q
 switchport mode trunk
 spanning-tree portfast
!
interface FastEthernet1/0/24
 switchport access vlan 250
 switchport mode access
!
interface GigabitEthernet1/0/1
!
interface GigabitEthernet1/0/2
!
interface Vlan1
 no ip address
!
interface Vlan50
 ip address 192.168.50.254 255.255.255.0
!
interface Vlan51
 ip address 192.168.51.254 255.255.255.0
!
interface Vlan52
 ip address 192.168.52.254 255.255.255.0
!
interface Vlan250
 ip address 10.0.250.254 255.255.255.0
!
interface Vlan251
 ip address 10.0.251.254 255.255.255.0
!
ip classless
ip http server
ip http secure-server
!
!
control-plane
!
!
line con 0
line vty 0 4
 login
line vty 5 15
 login
!
end

What did I do wrong? Any idea?

Best regards!

Francesco Molino · ‎08-30-2016

Hi

what is your wlc IP address? Because AP wants to reach out 10.0.250.250 and in your option 43 you set 10.0.251.250.

Thanks

Thanks
Francesco
PS: Please don't forget to rate and select as validated answer if this answered your question

Heiko Kelling · ‎08-30-2016

Hi, it is working with this option. My mistake was, that I forgot the vlan 50 in the trunk to AP!

Now it seems to work. Thank you.

interface FastEthernet1/0/11
 description AP Port
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 50
 switchport trunk allowed vlan 50,51,52
 switchport mode trunk

Francesco Molino · ‎08-31-2016

Nice to hear that

PS: Please don't forget to rate and mark as correct answer if this solved your issue

Thanks
Francesco
PS: Please don't forget to rate and select as validated answer if this answered your question