Folks,
I am dealing with very strange issue related LACP and not sure if its bug of 6120XG switch or something else. so let me explain my issue here.
Network Diagram:
I have two Cisco Nexus 9396PX TOR switches in Cisco vPC design for milti-chassis connected to HP blade switch 6120XG.
This is in production last 1 years and had no issue. but recently noticed my all LACP links went down even all switches are up. During debug i found Cisco Switch was not receiving any LACP packets to bring this bundle up. (That conclude something is wrong with HP 6120XG switch) Seems like HP switch is freez or something even i can ssh on to switch and run all commands.
HP 6120XG firmware version: Z.14.58
Cisco Nexus 9396PX logs during incident, Here is the logs which i found on Cisco and HP switches.
2022 Mar 31 05:28:39 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel412: first operational port changed from Ethernet1/3 to Ethernet1/4
2022 Mar 31 05:28:39 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-PORT_DOWN: port-channel412: Ethernet1/3 is down
2022 Mar 31 05:28:39 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_BANDWIDTH_CHANGE: Interface port-channel412,bandwidth changed to 10000000 Kbit
2022 Mar 31 05:28:39 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DOWN_INITIALIZING: Interface Ethernet1/3 is down (Initializing)
2022 Mar 31 05:28:40 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel412: first operational port changed from Ethernet1/4 to none
2022 Mar 31 05:28:40 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-PORT_DOWN: port-channel412: Ethernet1/4 is down
2022 Mar 31 05:28:40 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel412 is down (No operational members)
2022 Mar 31 05:28:40 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_BANDWIDTH_CHANGE: Interface port-channel412,bandwidth changed to 100000 Kbit
2022 Mar 31 05:28:40 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DOWN_INITIALIZING: Interface Ethernet1/4 is down (Initializing)
2022 Mar 31 05:28:40 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel412 is down (No operational members)
2022 Mar 31 05:28:49 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-PORT_SUSPENDED: Ethernet1/3: Ethernet1/3 is suspended
2022 Mar 31 05:28:50 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-PORT_SUSPENDED: Ethernet1/4: Ethernet1/4 is suspended
2022 Mar 31 06:05:19 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DOWN_LINK_FAILURE: Interface Ethernet1/3 is down (Link failure)
2022 Mar 31 06:05:19 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DOWN_LINK_FAILURE: Interface Ethernet1/4 is down (Link failure)
2022 Mar 31 06:05:19 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel412 is down (No operational members)
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel412 is down (No operational members) (message repeated 2
times)
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-SPEED: Interface Ethernet1/3, operational speed changed to 10 Gbps
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/3, operational duplex mode changed to Full
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/3, operational Receive Flow Control state changed to off
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/3, operational Transmit Flow Control state changed to off
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-SPEED: Interface port-channel412, operational speed changed to 10 Gbps
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DUPLEX: Interface port-channel412, operational duplex mode changed to Full
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface port-channel412, operational Receive Flow Control state changed to off
2022 Mar 31 06:08:26 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface port-channel412, operational Transmit Flow Control state changed to off
2022 Mar 31 06:08:27 swt-phx-k006-leaf-2-2 %ETHPORT-5-SPEED: Interface Ethernet1/4, operational speed changed to 10 Gbps
2022 Mar 31 06:08:27 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/4, operational duplex mode changed to Full
2022 Mar 31 06:08:27 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/4, operational Receive Flow Control state changed to off
2022 Mar 31 06:08:27 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/4, operational Transmit Flow Control state changed to off
2022 Mar 31 06:08:31 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-PORT_UP: port-channel412: Ethernet1/3 is up
2022 Mar 31 06:08:31 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel412: first operational port changed from none to Ethernet1/3
2022 Mar 31 06:08:31 swt-phx-k006-leaf-2-2 %ETH_PORT_CHANNEL-5-PORT_UP: port-channel412: Ethernet1/4 is up
2022 Mar 31 06:08:31 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_BANDWIDTH_CHANGE: Interface port-channel412,bandwidth changed to 10000000 Kbit
2022 Mar 31 06:08:31 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_UP: Interface Ethernet1/3 is up in mode trunk
2022 Mar 31 06:08:31 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_UP: Interface port-channel412 is up in mode trunk
2022 Mar 31 06:08:31 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_BANDWIDTH_CHANGE: Interface port-channel412,bandwidth changed to 20000000 Kbit
2022 Mar 31 06:08:31 swt-phx-k006-leaf-2-2 %ETHPORT-5-IF_UP: Interface Ethernet1/4 is up in mode trunk
LACP logs
21) FSM:<Ethernet1/3> Transition at 472440 usecs after Thu Mar 31 05:28:39 2022
Previous state: [LACP_ST_PORT_MEMBER_COLLECTING_AND_DISTRIBUTING_ENABLED]
Triggered event: [LACP_EV_RECEIVE_PARTNER_PDU_TIMED_OUT]
Next state: [LACP_ST_PORT_IS_DOWN_OR_LACP_IS_DISABLED]
22) FSM:<Ethernet1/3> Transition at 485224 usecs after Thu Mar 31 05:28:39 2022
Previous state: [LACP_ST_PORT_IS_DOWN_OR_LACP_IS_DISABLED]
Triggered event: [LACP_EV_LACP_DOWN_OR_PORT_DOWN]
Next state: [FSM_ST_NO_CHANGE]
23) FSM:<Ethernet1/3> Transition at 513668 usecs after Thu Mar 31 05:28:39 2022
Previous state: [LACP_ST_PORT_IS_DOWN_OR_LACP_IS_DISABLED]
Triggered event: [LACP_EV_PORT_HW_PATH_DISABLED]
Next state: [FSM_ST_NO_CHANGE]
24) FSM:<Ethernet1/3> Transition at 553383 usecs after Thu Mar 31 05:28:39 2022
Previous state: [LACP_ST_PORT_IS_DOWN_OR_LACP_IS_DISABLED]
Triggered event: [LACP_EV_CLNUP_PHASE_II]
Next state: [LACP_ST_PORT_IS_DOWN_OR_LACP_IS_DISABLED]
25) FSM:<Ethernet1/3> Transition at 572723 usecs after Thu Mar 31 05:28:39 2022
Previous state: [LACP_ST_PORT_IS_DOWN_OR_LACP_IS_DISABLED]
Triggered event: [LACP_EV_LACP_ENABLED_AND_PORT_UP]
Next state: [LACP_ST_DETACHED_LAG_NOT_DETERMINED]
26) FSM:<Ethernet1/3> Transition at 573092 usecs after Thu Mar 31 05:28:40 2022
Previous state: [LACP_ST_DETACHED_LAG_NOT_DETERMINED]
Triggered event: [LACP_EV_PERIODIC_TRANSMIT_TIMER_EXPIRED]
Next state: [FSM_ST_NO_CHANGE]
27) FSM:<Ethernet1/3> Transition at 574523 usecs after Thu Mar 31 05:28:41 2022
Previous state: [LACP_ST_DETACHED_LAG_NOT_DETERMINED]
Triggered event: [LACP_EV_PERIODIC_TRANSMIT_TIMER_EXPIRED]
Next state: [FSM_ST_NO_CHANGE]
28) FSM:<Ethernet1/3> Transition at 575875 usecs after Thu Mar 31 05:28:42 2022
Previous state: [LACP_ST_DETACHED_LAG_NOT_DETERMINED]
Triggered event: [LACP_EV_PERIODIC_TRANSMIT_TIMER_EXPIRED]
Next state: [FSM_ST_NO_CHANGE]
29) FSM:<Ethernet1/3> Transition at 577793 usecs after Thu Mar 31 05:28:43 2022
Previous state: [LACP_ST_DETACHED_LAG_NOT_DETERMINED]
Triggered event: [LACP_EV_PERIODIC_TRANSMIT_TIMER_EXPIRED]
Next state: [FSM_ST_NO_CHANGE]
On HP 6120XG switch
Mar 31 05:37:25 172.30.9.34 00393 lacp: Port 18 is blocked - error condition
Mar 31 05:37:25 172.30.9.34 00435 ports: port 18 is Blocked by LACP
Mar 31 05:37:51 172.30.9.34 00393 lacp: Port 19 is blocked - error condition
Mar 31 05:37:51 172.30.9.34 00435 ports: port 19 is Blocked by LACP
Mar 31 05:38:03 172.30.9.34 00393 lacp: Port 20 is blocked - error condition
Mar 31 05:38:03 172.30.9.34 00435 ports: port 20 is Blocked by LACP
Mar 31 05:38:36 172.30.9.34 00393 lacp: Port 21 is blocked - error condition
Mar 31 05:38:36 172.30.9.34 00435 ports: port 21 is Blocked by LACP
Mar 31 05:38:36 172.30.9.34 00079 ports: trunk Trk1 is now inactive
Mar 31 05:38:36 172.30.9.34 00002 vlan: DEFAULT_VLAN virtual LAN disabled
Mar 31 05:41:36 172.30.9.34 00075 system: Out of pkt buffers; miss count: 2
Mar 31 05:43:57 172.30.9.34 02631 SNTP: Server not found at 132.163.96.1.
Mar 31 05:44:06 172.30.9.34 02631 SNTP: Server not found at 132.163.97.1.
Mar 31 05:44:06 172.30.9.34 00414 SNTP: Unable to reach configured SNTP servers
Cisco Nexus switch port configuration
interface port-channel412
description ** Link to enc-k004-1-b **
switchport mode trunk
switchport trunk allowed vlan 60,62-70,100
mtu 9216
speed 10000
vpc 412
HP 6120XG config
hostname "swt-enc-k004-1-b"
interface 23
disable
lacp Active
exit
interface 24
disable
lacp Active
exit
trunk 18-21 Trk1 LACP
vlan 1
name "DEFAULT_VLAN"
untagged 17,22-24,Trk1
ip address dhcp-bootp
no untagged 1-16
exit
vlan 100
name "ostack_1_public1"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 63
name "ostack_1_br-vxlan"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 64
name "ops"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 65
name "ostack_1_br-mgmt"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 66
name "ostack_1_ops"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 67
name "ostack_1_odmz"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 68
name "ostack_1_idmz"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 69
name "ostack_lab"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 70
name "pxe"
untagged 1-16
tagged Trk1
no ip address
jumbo
exit
vlan 62
name "ostack_1_br-lbaas"
tagged 1-16,Trk1
no ip address
jumbo
exit
vlan 60
name "ostack_1_br-storage"
tagged 1-16,Trk1
no ip address
jumbo
exit
logging 172.30.8.7 oobm
logging facility syslog
timesync sntp
sntp unicast
sntp server priority 1 132.163.96.1 3 oobm
sntp server priority 2 132.163.97.1 3 oobm
snmp-server community "XXXXXX" operator
spanning-tree
spanning-tree 1 admin-edge-port
spanning-tree 1 bpdu-protection
spanning-tree 2 admin-edge-port
spanning-tree 2 bpdu-protection
spanning-tree 3 admin-edge-port
spanning-tree 3 bpdu-protection
spanning-tree 4 admin-edge-port
spanning-tree 4 bpdu-protection
spanning-tree 5 admin-edge-port
spanning-tree 5 bpdu-protection
spanning-tree 6 admin-edge-port
spanning-tree 6 bpdu-protection
spanning-tree 7 admin-edge-port
spanning-tree 7 bpdu-protection
spanning-tree 8 admin-edge-port
spanning-tree 8 bpdu-protection
spanning-tree 9 admin-edge-port
spanning-tree 9 bpdu-protection
spanning-tree 10 admin-edge-port
spanning-tree 10 bpdu-protection
spanning-tree 11 admin-edge-port
spanning-tree 11 bpdu-protection
spanning-tree 12 admin-edge-port
spanning-tree 12 bpdu-protection
spanning-tree 13 admin-edge-port
spanning-tree 13 bpdu-protection
spanning-tree 14 admin-edge-port
spanning-tree 14 bpdu-protection
spanning-tree 15 admin-edge-port
spanning-tree 15 bpdu-protection
spanning-tree 16 admin-edge-port
spanning-tree 16 bpdu-protection
spanning-tree Trk1 priority 4
oobm
ip address 172.30.9.34 255.255.248.0
ip default-gateway 172.30.8.1
exit
password manager
password operator
LACP mode is active on HP 6120XG as you can see in following output. (I do have active on Cisco also)
swt-enc-k004-1-b# show lacp
LACP
PORT LACP TRUNK PORT LACP LACP
NUMB ENABLED GROUP STATUS PARTNER STATUS
---- ------- ------- ------- ------- -------
18 Active Trk1 Up Yes Success
19 Active Trk1 Up Yes Success
20 Active Trk1 Up Yes Success
21 Active Trk1 Up Yes Success
23 Active 23 Down No Success
24 Active 24 Down No Success
After reboot HP blade 6120XG LACP came back and traffic started flowing, This happened in past to other racks also but everytime we just reboot switch and it come back. (We don't have HPE support where we can ask to find out if its BUG of HP 6120XG switch or something else in my config)
