Technical Note: How to get the AccessPoint(AP) up with Link Aggregation Protocol(LACP) config

[riteshpv]

Description

This article describes how to get the AccessPoint(AP) up with Link Aggregation Protocol(LACP) config.

Solution

Step by step:

_ Get the AccessPoint up (Enabled Online) on the controller (connected via its first interface). 

_ Via the GUI or CLI of the controller enable the second interface index of the AccessPoint with Link Aggregation Protocol. 

Note: Do not connect the second interface of the AccessPoint to the switch. 

From GUI – Edit AccessPoint, select Ethernet Interface tab – Edit Interface index 2 – Drop down and select Enable for Link Aggregation Protocol.

From CLI

config terminal 

interface ap <ap-id> 2 

lacp enable 

end 

Cross verify the changes is showing on the controller. 

show interfaces Ethernet ap <ap-id> 

example:

Controller#  show interfaces Ethernet ap 5

Type        ID  Name            IfIndex MTU     MAC Address       Admin State Op State  Last Change          Uplink Type LACP

ap            5   AP-5                   1       1500    00:0c:e6:xx:xx:xx  Up          Enabled   08/17/2018 15:44:58  Uplink      disable

ap            5   AP-5                   2       1500    00:0c:e6:xx:xx:xx  Up          Disabled  08/17/2018 15:48:41  Uplink-lacp enable

        Ethernet(2 entries)

Connect to the AccessPoint and run the following command:

ap 5> config show ethernet

Ethernet 0 MAC parameters

----------------------------------------

 MAC address          = 00:0c:e6:xx:xx:xx  

 Default destination  = 00:bb:00:bb:00:bb

 MTU                  = 1500

 Speed                = 1 Gbps

 Duplexity            = Full Duplex

 Operational State    = Up

 Uplink               = 0

 Bonding              = DISABLE

 AP MAC Assignment    = ETH0

Ethernet 1 MAC parameters

----------------------------------------

 MAC address          = 00:0c:e6:xx:xx:xx  

 Default destination  = 00:bb:00:bb:00:bb

 MTU                  = 1500

 Speed                = 100 Mbps

 Duplexity            = Full Duplex

 Operational State    = Down

 Uplink               = 1

 Bonding              = DISABLE

 AP MAC Assignment    = ETH0

_ Configure the Link Aggregation Protocol on the switch. 

IMP Note: The switch port configuration of the switch should be Link Aggregation Protocol active. 

On FortiSwitch:

    edit "LACPtest"

        set port-selection-criteria src-dst-ip

        set description ''

        set mode lacp-active                               < ----------------- LACP active

        set member-withdrawal-behavior block

        set bundle disable

        set auto-isl 0

        set mclag disable

        set mclag-icl disable

            set members "port5" "port6"                    < ------------------ Port were the AP is connected.

        set lacp-speed slow

    next

end

On Cisco Switch:

interface Port-channel15

 switchport trunk native vlan 55

 switchport trunk allowed vlan 2-4094

 switchport mode trunk

 logging event trunk-status

 logging event bundle-status

 logging event spanning-tree

 logging event status

 logging event subif-link-status

 spanning-tree portfast trunk

!

interface GigabitEthernet1/0/25

 switchport trunk native vlan 55

 switchport trunk allowed vlan 2-4094

 switchport mode trunk

 channel-protocol lacp

 channel-group 15 mode active

!

interface GigabitEthernet1/0/26

 switchport trunk native vlan 55

 switchport trunk allowed vlan 2-4094

 switchport mode trunk

 channel-protocol lacp

 channel-group 15 mode active

!

On HP Switch:

2530# system-view

2530(config)#trunk ethernet 15-16 trk1 

2530(config)#trunk ethernet 15-16 trk1 lacp 

2530(config)#trunk-load-balance L2-based            < ---------------  (if you are using AP's in L2 mode i.e. no IP addresses)

This will result in the trunk being put into the default VLAN. If the AP need to be on separate VLAN then use following command:

2530(config)#vlan xx untagged Trk1              

2530(config)#exit

IMP NOTE: 

>The configuration on Switch might change depending on the Switch models/Versions. The above config are for reference.

>The Important factor in the switch config is that the trunk port needs to be set with Link Aggregation Protocol ACTIVE.

_ Now connect the 2nd interface of AccessPoint to this switch port configuration of Link Aggregation Protocol. 

Both links will come up. 

It might take a while that to be reflected on the controller. 

Example:

Conroller#  show interfaces Ethernet ap 5

Type        ID  Name            IfIndex MTU     MAC Address       Admin State Op State  Last Change          Uplink Type LACP

ap          5   AP-5            1       1500    00:0c:e6:xx:xx:xx Up          Enabled   08/17/2018 15:44:58  Uplink      disable

ap          5   AP-5            2       1500    00:0c:e6:xx:xx:xx Up          Enabled   08/17/2018 15:53:52  Uplink-lacp enable

Connect to the AP and run the following command:

AP>  config show ethernet

Ethernet 0 MAC parameters

----------------------------------------

 MAC address          = 00:0c:e6:xx:xx:xx  

 Default destination  = 00:bb:00:bb:00:bb

 MTU                  = 1500

 Speed                = 1 Gbps

 Duplexity            = Full Duplex

 Operational State    = Up

 Uplink               = 0

 Bonding              = DISABLE

 AP MAC Assignment    = ETH0

Ethernet 1 MAC parameters

----------------------------------------

 MAC address          = 00:0c:e6:xx:xx:xx  

 Default destination  = 00:bb:00:bb:00:bb

 MTU                  = 1500

 Speed                = 1 Gbps

 Duplexity            = Full Duplex

 Operational State    = Up

 Uplink               = 2

 Bonding              = ENABLE

 AP MAC Assignment    = ETH0

Notes : Link aggregation is available only on AP832, AP822, FAP-U421, and FAP-U423. If the switch that terminates the AccessPoint does not support Link Aggregation Protocol, the AccessPoint will fall back to non-Link Aggregation Protocol mode with only one interface passing data traffic. Static bonding is not supported.