whats wrong with the below configuration. With only either the infrared or wireless is connected, theres no problem at all..once both are connected, then leds on port 25 and 26 on the moon switch will start to blink so fast and lost the connectivity from the core to the moon.
CORE SWITCH 1
spanning-tree mode rapid-pvst
no spanning-tree optimize bpdu transmission
spanning-tree vlan 2,10,12,14,16,216 priority 8192
spanning-tree vlan 11,13,15,100 priority 12288
interface GigabitEthernet1/44
description INFRARED TO the moon
no ip address
switchport
switchport access vlan 216
switchport mode access
interface Vlan216
ip address 172.20.254.202 255.255.255.248
standby 216 ip 172.20.254.201
standby 216 priority 115
standby 216 preempt
standby 216 track GigabitEthernet1/44 20
CORE SWITCH 2
spanning-tree mode rapid-pvst
no spanning-tree optimize bpdu transmission
spanning-tree vlan 2,10,12,14,16,216 priority 12288
spanning-tree vlan 11,13,15,100 priority 8192
interface Vlan216
ip address 172.20.254.203 255.255.255.248
standby 216 ip 172.20.254.201
standby 216 priority 105
standby 216 preempt
interface GigabitEthernet1/44
description Wireless connection to the moon
no ip address
switchport
switchport access vlan 216
switchport mode access
MOON
spanning-tree vlan 24-25,27,200,215-216 priority 24576
interface GigabitEthernet0/25
description Infrared Link Connected to
core SW1
switchport access vlan 216
switchport mode access
!
interface GigabitEthernet0/26
description Wireless Link Connected to
core SW2
switchport access vlan 216
switchport mode access
