TLDR = nothing changed. Everything keeps behaving the same.
I have checked. The configs for the POs are identical, less the speed on one of them which is set to 1000 since the other end is 1000 and its a tengig interface.
I have done a stare and compare three times. The configs in the WLCs appear accurate. The POs must be configured correctly, since as soon as I plug BOTH controllers in, one will go to "edh001-001-wc01(recovery-mode)#". It doesn't do that when it is NOT plugged in. When it is not plugged in to the switch, the hostname is correct. Its only after connecting both controllers to the switch that makes it change its hostname. When only one controller is plugged into the switch, it works fine. Its only after I plug both in at the same time does this go sideways. Both controllers running 17.9.4
I created a new PO on each box, and instead of ON, used ACTIVE.
============== wlc1=============================
edh001-001-wc01#
interface Port-channel3
description ** uplink **
switchport mode trunk
!
interface Port-channel4
description ** uplink **
switchport mode trunk
!
!
interface TwoGigabitEthernet0/0/3 <--using this port as uplink
switchport mode trunk
speed 1000
no negotiation auto
no snmp trap link-status
no mop enabled
channel-group 3 mode active
!
edh001-001-wc01#sho etherchannel summ
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
A - formed by Auto LAG
Number of channel-groups in use: 4
Number of aggregators: 4
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SD) - Te0/1/0(D) Te0/1/1(D)
2 Po2(SD) -
3 Po3(SU) LACP Tw0/0/3(P)
4 Po4(SD) -
edh001-001-wc01#sh lacp nei
Flags: S - Device is requesting Slow LACPDUs
F - Device is requesting Fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode
Channel group 3 neighbors
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Tw0/0/3 SA 32768 00d6.fe29.6a00 8s 0x0 0x3 0x11B 0x3D
edh001-001-wc01#
============== wlc2=============================
!
interface Port-channel3
description ** uplink **
switchport mode trunk
!
interface Port-channel4
description ** uplink **
switchport mode trunk
!
!
interface TwoGigabitEthernet0/0/3<--using this port as uplink
switchport mode trunk
speed 1000
no negotiation auto
no snmp trap link-status
no mop enabled
channel-group 4 mode active
edh001-001-wc02#sho etherchannel summ
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
A - formed by Auto LAG
Number of channel-groups in use: 4
Number of aggregators: 4
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SD) -
2 Po2(SD) - Te0/1/0(D)
3 Po3(SD) -
4 Po4(SU) LACP Tw0/0/3(P) Te0/1/1(D)
edh001-001-wc02#sh lacp nei
Flags: S - Device is requesting Slow LACPDUs
F - Device is requesting Fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode
Channel group 4 neighbors
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Tw0/0/3 SA 32768 00d6.fe29.6a00 21s 0x0 0x4 0x11D 0x3D
Te0/1/1 SP 0 0000.0000.0000 5775s 0x0 0x0 0x0 0x0
edh001-001-wc02#
============== switch =============================
interface Port-channel3
switchport mode trunk
switchport nonegotiate
logging event trunk-status
logging event bundle-status
!
interface Port-channel4
switchport mode trunk
switchport nonegotiate
logging event trunk-status
logging event bundle-status
!
!
interface GigabitEthernet0/26 <--using this port as uplink
switchport mode trunk
switchport nonegotiate
logging event trunk-status
logging event bundle-status
channel-group 3 mode active
!
!
interface GigabitEthernet0/28 <--using this port as uplink
switchport mode trunk
switchport nonegotiate
logging event trunk-status
logging event bundle-status
channel-group 4 mode active
!
9k_sw1#sho etherchannel summary ============== only wlc #1 plugged in =============================
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use N - not in use, no aggregation
f - failed to allocate aggregator
M - not in use, minimum links not met
m - not in use, port not aggregated due to minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
A - formed by Auto LAG
Number of channel-groups in use: 4
Number of aggregators: 4
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SD) - Gi0/25(D)
2 Po2(SD) - Gi0/27(D)
3 Po3(SD) LACP Gi0/26(D)
4 Po4(SU) LACP Gi0/28(P)
9k_sw1#
9k_sw1# sho lacp nei
Flags: S - Device is requesting Slow LACPDUs
F - Device is requesting Fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode
Channel group 3 neighbors
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Gi0/26 SP 32768 687d.b4fd.4640 426s 0x0 0x3 0x4 0x34
Channel group 4 neighbors
Partner's information:
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Gi0/28 SA 32768 8c1e.806e.9080 21s 0x0 0x4 0x4 0x3D
9k_sw1#
9k_sw1#
9k_sw1#
============== both WLCs plugged in =============================
adding wlc #2
Jan 28 16:24:43.661: %DTP-5-TRUNKPORTON: Port Gi0/28 has become dot1q trunk
Jan 28 16:24:45.157: %LINK-3-UPDOWN: Interface GigabitEthernet0/28, changed state to up
Jan 28 16:24:53.458: %EC-5-BUNDLE: Interface Gi0/28 joined port-channel Po4
Jan 28 16:24:54.466: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/28, changed state to up
Jan 28 16:24:55.461: %LINK-3-UPDOWN: Interface Port-channel4, changed state to up
Jan 28 16:24:56.462: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel4, changed state to up
WLC #2 changes its name:
edh001-001-wc02(recovery-mode)#
WLC #1 does not change its name:
edh001-001-wc01>
