06-09-2014 11:44 AM - edited 03-07-2019 07:40 PM
LACP and PAgP are not supported on the controller and it appears that the 4500 series will not use LAG.
interface Port-channel10
description WLC Port-Channel
switchport
switchport mode trunk
service-policy input AutoQos-4.0-Input-Policy
service-policy output OUTPUT-PRIORITY-POLICING-ETHERCHANNEL
interface GigabitEthernet3/1
description Cisco 5508 Wireless Controller
switchport mode trunk
channel-group 10 mode active
spanning-tree link-type point-to-point
!
interface GigabitEthernet3/2
description Cisco 5508 Wireless Controller
switchport mode trunk
channel-group 10 mode active
spanning-tree link-type point-to-point
I am getting the error, "lacp not enabled on remote port..". I removed the 2nd fiber cable and removed the channel-group so I could get the WLC back online. Any help would be greatly appreciated.
Solved! Go to Solution.
06-11-2014 10:51 AM
In order to get the ether channel to work with the WLC you need to change your configuration from:
!
interface GigabitEthernet3/1
channel-group 10 mode active
!
interface GigabitEthernet3/2
channel-group 10 mode active
!
To mode ON
!
interface GigabitEthernet3/1
channel-group 10 mode on
!
interface GigabitEthernet3/2
channel-group 10 mode on
!
Mode ON tells the switch to do Link Aggregation Protocol and does try and negotiate using one of the two control protocols LACP or PAgP.
using mode ON is part of the configuration guide when enabling Cisco WLC LAG option.
06-09-2014 04:47 PM
Both sides of the connection have to support the same protocol. In your case and as you noted the 5508 does not support link aggregation (Etherchannle), so it is not possible to configure it even though the 4500 supports it.
HTH
06-10-2014 03:06 PM
You need to go into the WLC and enable LAG in order for this to work.
You can do this from the command line by entering the following command:
config lag enable
or going into the GUI under:
Controller --> General and change LAG Mode one next reboot from disabled to enabled.
Ether of these settings require a reboot before they will take affect.
Also per design guide the channel-group should be configured with mode on instead of active.
Hope that helps.
06-11-2014 08:36 AM
Lag is enabled on the WLC. The function was working previously when connected to a 3750 switch. We just upgraded to a 4510 and get this error.
06-11-2014 10:51 AM
In order to get the ether channel to work with the WLC you need to change your configuration from:
!
interface GigabitEthernet3/1
channel-group 10 mode active
!
interface GigabitEthernet3/2
channel-group 10 mode active
!
To mode ON
!
interface GigabitEthernet3/1
channel-group 10 mode on
!
interface GigabitEthernet3/2
channel-group 10 mode on
!
Mode ON tells the switch to do Link Aggregation Protocol and does try and negotiate using one of the two control protocols LACP or PAgP.
using mode ON is part of the configuration guide when enabling Cisco WLC LAG option.
06-11-2014 10:57 AM
Here is the link to the configuration guide to that explains configuring LAG and why the switch needs to be set to mode ON.
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