Hi!
Recently an incident occurred in ws-c3850-24s x 2 units (stack, version 16.6.6) and
ws-c3850-24t x 2 units (stack, version 16.6.6).
After checking the log, it seems that the following logs was displayed for both ws-c3850-24s and ws-c3850-24t.
I am unable to find any bugs or a conclusive solution for the issue. Any help in this issue appreciated.
[the log of ws-c3850-24s]
Log Buffer (512000 bytes):
*Apr 26 07:29:56.777: %SMART_LIC-6-AGENT_READY: Smart Agent for Licensing is initialized
*Apr 26 07:30:00.989: dev_pluggable_optics_selftest attribute table internally inconsistent @ 0x1D4
*Apr 26 07:30:04.378: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan
*Apr 26 07:30:04.905: %LINK-3-UPDOWN: Interface Lsmpi18/3, changed state to up
*Apr 26 07:30:04.906: %LINK-3-UPDOWN: Interface EOBC18/1, changed state to up
*Apr 26 07:30:04.907: %LINEPROTO-5-UPDOWN: Line protocol on Interface LI-Null0, changed state to up
*Apr 26 07:30:04.908: %LINK-3-UPDOWN: Interface GigabitEthernet0/0, changed state to down
*Apr 26 07:30:04.908: %LINK-3-UPDOWN: Interface LIIN18/2, changed state to up
*Apr 26 07:30:04.965: WCM-PKI-SHIM: buffer allocation failed for SUDI support check
*Apr 26 07:30:04.965: PKI/SSL unable to send Sudi support to WCM
*Apr 26 07:30:05.133: %HMANRP-6-HMAN_IOS_CHANNEL_INFO: HMAN-IOS channel event for switch 1: EMP_RELAY: Channel UP!
*Apr 26 07:29:33.802: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is down
*Apr 26 07:29:33.802: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 2 on Switch 1 is down
*Apr 26 07:29:33.802: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
*Apr 26 07:29:33.802: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 2 on Switch 1 is up
*Apr 26 07:29:33.802: %STACKMGR-6-SWITCH_ADDED: Switch 1 R0/0: stack_mgr: Switch 1 has been added to the stack.
*Apr 26 07:29:33.802: %STACKMGR-6-SWITCH_ADDED: Switch 1 R0/0: stack_mgr: Switch 2 has been added to the stack.
*Apr 26 07:29:33.802: %STACKMGR-6-SWITCH_ADDED: Switch 1 R0/0: stack_mgr: Switch 1 has been added to the stack.
*Apr 26 07:29:33.802: %STACKMGR-6-ACTIVE_ELECTED: Switch 1 R0/0: stack_mgr: Switch 1 has been elected ACTIVE.
*Apr 26 07:29:33.006: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 1 on Switch 2 is down
*Apr 26 07:29:33.006: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is down
*Apr 26 07:29:33.006: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is up
*Apr 26 07:29:33.006: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 1 on Switch 2 is up
*Apr 26 07:29:33.006: %STACKMGR-6-SWITCH_ADDED: Switch 2 R0/0: stack_mgr: Switch 2 has been added to the stack.
*Apr 26 07:29:33.006: %STACKMGR-6-SWITCH_ADDED: Switch 2 R0/0: stack_mgr: Switch 2 has been added to the stack.
*Apr 26 07:29:33.006: %STACKMGR-6-SWITCH_ADDED: Switch 2 R0/0: stack_mgr: Switch 2 has been added to the stack.
*Apr 26 07:29:33.006: %STACKMGR-6-ACTIVE_ELECTED: Switch 2 R0/0: stack_mgr: Switch 1 has been elected ACTIVE.
*Apr 26 07:30:05.141: %HMANRP-6-EMP_NO_ELECTION_INFO: Could not elect active EMP switch, setting emp active switch to 0: EMP_RELAY: Could not elect switch with mgmt port UP
*Apr 26 07:30:05.921: %LINEPROTO-5-UPDOWN: Line protocol on Interface Lsmpi18/3, changed state to up
*Apr 26 07:30:05.921: %LINEPROTO-5-UPDOWN: Line protocol on Interface EOBC18/1, changed state to up
*Apr 26 07:30:05.922: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to down
*Apr 26 07:30:05.922: %LINEPROTO-5-UPDOWN: Line protocol on Interface LIIN18/2, changed state to up
*Apr 26 07:30:06.839: %IOSXE_MGMTVRF-6-CREATE_SUCCESS_INFO: Management vrf Mgmt-vrf created with ID 1, ipv4 table-id 0x1, ipv6 table-id 0x1E000001
*Apr 26 07:30:07.015: %HMANRP-6-HMAN_IOS_CHANNEL_INFO: HMAN-IOS channel event for switch 2: EMP_RELAY: Channel UP!
*Apr 26 07:30:08.791: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
*Apr 26 2023 07:30:08.952 UTC: %SYS-5-LOG_CONFIG_CHANGE: Buffer logging: level debugging, xml disabled, filtering disabled, size (512000)
*Apr 26 2023 07:30:08.955 UTC: %SYS-5-LOG_CONFIG_CHANGE: Console logging disabled
[the log of ws-c3850-24t]
Log Buffer (512000 bytes):
*Apr 26 07:32:28.450: %SMART_LIC-6-AGENT_READY: Smart Agent for Licensing is initialized
*Apr 26 07:32:34.330: dev_pluggable_optics_selftest attribute table internally inconsistent @ 0x1D4
*Apr 26 07:32:41.405: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan
*Apr 26 07:32:42.282: %LINK-3-UPDOWN: Interface Lsmpi18/3, changed state to up
*Apr 26 07:32:42.287: %LINK-3-UPDOWN: Interface EOBC18/1, changed state to up
*Apr 26 07:32:42.288: %LINEPROTO-5-UPDOWN: Line protocol on Interface LI-Null0, changed state to up
*Apr 26 07:32:42.289: %LINK-3-UPDOWN: Interface GigabitEthernet0/0, changed state to down
*Apr 26 07:32:42.290: %LINK-3-UPDOWN: Interface LIIN18/2, changed state to up
*Apr 26 07:32:42.396: WCM-PKI-SHIM: buffer allocation failed for SUDI support check
*Apr 26 07:32:42.396: PKI/SSL unable to send Sudi support to WCM
*Apr 26 07:32:42.682: %HMANRP-6-HMAN_IOS_CHANNEL_INFO: HMAN-IOS channel event for switch 2: EMP_RELAY: Channel UP!
*Apr 26 07:32:42.695: %HMANRP-6-HMAN_IOS_CHANNEL_INFO: HMAN-IOS channel event for switch 1: EMP_RELAY: Channel UP!
*Apr 26 07:31:40.799: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is down
*Apr 26 07:31:40.799: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 2 on Switch 1 is down
*Apr 26 07:31:40.799: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 2 on Switch 1 is up
*Apr 26 07:31:40.799: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
*Apr 26 07:31:40.799: %STACKMGR-6-SWITCH_ADDED: Switch 1 R0/0: stack_mgr: Switch 1 has been added to the stack.
*Apr 26 07:31:40.799: %STACKMGR-6-SWITCH_ADDED: Switch 1 R0/0: stack_mgr: Switch 1 has been added to the stack.
*Apr 26 07:31:40.799: %STACKMGR-6-SWITCH_ADDED: Switch 1 R0/0: stack_mgr: Switch 1 has been added to the stack.
*Apr 26 07:31:40.799: %STACKMGR-6-ACTIVE_ELECTED: Switch 1 R0/0: stack_mgr: Switch 1 has been elected ACTIVE.
*Apr 28 03:06:12.209: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 1 on Switch 2 is down
*Apr 28 03:06:12.210: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is down
*Apr 28 03:06:12.210: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 1 on Switch 2 is up
*Apr 28 03:06:12.210: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is up
*Apr 28 03:06:12.210: %STACKMGR-6-SWITCH_ADDED: Switch 2 R0/0: stack_mgr: Switch 2 has been added to the stack.
*Apr 28 03:06:12.210: %STACKMGR-6-SWITCH_ADDED: Switch 2 R0/0: stack_mgr: Switch 1 has been added to the stack.
*Apr 28 03:06:12.210: %STACKMGR-6-SWITCH_ADDED: Switch 2 R0/0: stack_mgr: Switch 2 has been added to the stack.
*Apr 28 03:06:12.210: %STACKMGR-6-ACTIVE_ELECTED: Switch 2 R0/0: stack_mgr: Switch 1 has been elected ACTIVE.
*Apr 26 07:32:42.717: %HMANRP-6-EMP_NO_ELECTION_INFO: Could not elect active EMP switch, setting emp active switch to 0: EMP_RELAY: Could not elect switch with mgmt port UP
*Apr 26 07:32:43.396: %LINEPROTO-5-UPDOWN: Line protocol on Interface Lsmpi18/3, changed state to up
*Apr 26 07:32:43.397: %LINEPROTO-5-UPDOWN: Line protocol on Interface EOBC18/1, changed state to up
*Apr 26 07:32:43.398: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to down
*Apr 26 07:32:43.399: %LINEPROTO-5-UPDOWN: Line protocol on Interface LIIN18/2, changed state to up
*Apr 26 07:32:45.612: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
*Apr 26 07:32:47.900: %IOSXE_MGMTVRF-6-CREATE_SUCCESS_INFO: Management vrf Mgmt-vrf created with ID 1, ipv4 table-id 0x1, ipv6 table-id 0x1E000001
*Apr 26 2023 07:32:47.940 UTC: %SYS-5-LOG_CONFIG_CHANGE: Buffer logging: level debugging, xml disabled, filtering disabled, size (512000)
