os6850E stacking is not working!!

[oysterliu]

hi, dear Sir:
I had encountered am issue that stacking is in the normal state. I had two OS6850e switch that are stacked and worked well, but they lost the stack at 2021/10/17. Now, the ID=2 switch is primary , ID=1 switch is secondary. But, the ID=1 switch is like at " pass-through" role, all ports are disconnected. How could I recover the stack to normal state.
some information as following:
************************************
-> show log swlog timestamp 10/20/2021 00:00
Displaying file contents for '/flash/swlog1.log'
FILEID: fileName[/flash/swlog1.log], endPtr[62886], configSize[64000], mode[2]
Time Stamp Application Level Log Message
------------------------+--------------+-------+--------------------------------
Displaying file contents for '/flash/swlog2.log'
FILEID: fileName[/flash/swlog2.log], endPtr[14061], configSize[64000], mode[1]
Time Stamp Application Level Log Message
------------------------+--------------+-------+--------------------------------
WED OCT 20 08:36:05 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:36:05 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:36:05 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:36:05 2021 STACK-MANAGER info == SM == Stacking link B status changed: DOWN
WED OCT 20 08:36:05 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:36:05 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:36:05 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:36:06 2021 STACK-MANAGER info == SM == Stacking link B status changed: DOWN
WED OCT 20 08:36:06 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:36:06 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:36:06 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:36:06 2021 STACK-MANAGER info == SM == Stacking link B status changed: DOWN
WED OCT 20 08:36:07 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:36:07 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:36:07 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:36:11 2021 STACK-MANAGER info Retaining Module Id for slot 1 unit 0 as 0
WED OCT 20 08:36:13 2021 INTERFACE info Got connection from slot 1:443
WED OCT 20 08:36:13 2021 INTERFACE info Got connection from slot 1:444
WED OCT 20 08:36:13 2021 CSM-CHASSIS alert == CSM == P54_1 - Startup hold request received
WED OCT 20 08:36:13 2021 CSM-CHASSIS alert == CSM == P54_1 - Forwarding Hold Status FALSE response to Secondary CSM

WED OCT 20 08:36:15 2021 HSM-CHASSIS info T8: Ni(1) insertion detected
WED OCT 20 08:36:15 2021 HSM-CHASSIS info == HSM == csHsmUtilNiCtxBrdSend() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
WED OCT 20 08:36:17 2021 HSM-CHASSIS info === HSM === Power Supply 1 has been INSERTED
WED OCT 20 08:36:17 2021 HSM-CHASSIS info == HSM == Power Supply 1 is OPERATIONAL
WED OCT 20 08:36:17 2021 GM info GMC: Got connection from slot 65 tick 292302163
WED OCT 20 08:36:17 2021 VLAN info VMC: Got connection from slot 65
WED OCT 20 08:36:24 2021 HSM-CHASSIS info == HSM == NiNsmT1: NI STATE Rcvd (sl: 1), MsgFlag: 0 Local T.O. Flag: 0
WED OCT 20 08:36:24 2021 HSM-CHASSIS info == HSM == NI UP Received from driver (sl =1)
WED OCT 20 08:36:24 2021 HSM-CHASSIS info == HSM == csHsmUtilNiCtxBrdSend() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
WED OCT 20 08:36:24 2021 INTERFACE info ## TX NI-ST Sl 2 ESMmsk 3 STKmsk 3 ##
WED OCT 20 08:36:24 2021 VLAN info CS_NI_UP msg received for slot 1 cfgState 1
WED OCT 20 08:36:24 2021 VLAN info CS_NI_UP InTakeover 0 vmcPrimaryCmm 1 NiDownRx 1
WED OCT 20 08:36:24 2021 VLAN info VMC: Sent Ok for slot 1
WED OCT 20 08:36:24 2021 INTERFACE info ## TX
NI-ST Sl 1 ESMmsk WED OCT 20 08:47:26 3 STKmsk 3 ##
: WED OCT 20 08:36:2STACK-MANAGER4 2021 ( GM 27info NI_UP 1 29230) 2617
infoWED OCT 2 message:
+++ 0 08:3== SM == Stacking li6:24 2021 nk B status changed: GM info GMC: Se UPnt Ok for slot 1

WED OCT 20 08:36:25+++ 2021 VL== SM == Stacking liAN info Sent VM_Cnk B Tx enabledFG_RQ
T_DONE msg
+++ WED == SM == Stacking liOCT 20 08:36:25 2021nk B Rx enabled
VLAN info +++ Rx VM_CFG_ACK_DO== SM == Stacking liNE msg from slot 1
nWED OCT 20 08:36:25 k B status changed: 2021 VLAN DOWN info Tx VM_CF
G_ACT_DONE to slot +++ 1
== SM == StackiWED OCT 20 08:36:26 ng link B status cha2021 PORT-MGR nged: UP alert crea
teObject: dup index+++
== SM == StackWED OCT 20 08:36:26 ing link B Tx enable2021 PORT-MGR d alarm portav:port
create failed!!
++WED OCT 20 08:38:22 + 2021 SESSIO== SM == Stacking liN info [SES] Authnk B Rx enabledentic
ation succeed: Sess+++ ion 0, access ty== SM == Stacking lipe Console
nk A statWED OCT 20 08:38:22 us changed: UP2021
SESSION in+++ fo [SES] Session== SM == Stacking li 0, user "admin"
nk WED OCT 20 08:38:22 A Tx enabled2021
SESSION info+++ [SES] Session 0== SM == Stacking li, IP address 0.0.0.0nk A Rx enabled

WED+++ OCT 20 08:39:16== SM == Stacking li 2021 STACK-MANAGERnk A status changed: info == SM == St DOWNacking link B s
tatus changed: DOWN+++
== SM == StackiWED OCT 20 08:39:16 ng link A status cha2021 STACK-MANAGER nged: UP info == S
M == NI 1 Down to L+++ A NI
== SM == StWED OCT 20 08:39:17 acking link A Tx enabled2021 INTERFACE info ## TX NI-ST Sl 2 ESMmsk 2 STKmsk 2 ##

WED OCT 20 08:39:18 2021 HSM-CHASSIS info T8: Ni(1) extraction detected
+++ WED OCT 20 08:39:18 2021 HSM-CHASSIS info == HSM == csHsmUtilNiCtxBrdSend() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
== SM == Stacking link A Rx enabledWED OCT 20 08:39:18 2021 HSM-CHASSIS info === HSM === Power Supply 1 has
been REMOVED
WED OCT 20 08:39:18 2021
VLAN inWED OCT 20 08:47:27 fo CS_NI_DOWN/CS_NI_: NOTPRESENT msg Rx STACK-MANAGERfor slo (t 1
27WED OCT 20 0) 8:39:18 2021 info VLAN inf message:
+++ o Del == SM == Stacking liconnection for slot nk A status changed:1
DOWNWED OCT 20 08
:39:18 2021 +++ VLAN info == SM == Stacking liVMC: Sent Pause for nk A status changed:slot 1
UPWED OCT 20
08:39:18 2021 +++ VLAN in== SM == Stacking lifo Start Timer on nink A Tx enabled_down
1 @ 1634719158
+++WED OCT 20 08:39:18 2021 INTERFACE== SM == Stacking li info Close NI 1 nk A Rx enabledESM,
socket 443 OK
+++ W== SM == Stacking liED OCT 20 08:39:18 2nk B status changed:021 INTERFACE DOWN info Close NI
1 NiSUp, socket 44+++ 4 OK
== SM == StWED OCT 20 08:39:18 acking link B status2021 INTERFACE changed: UP info
NIs are ready
+++WED OCT 20 08:39:18 2021 INTERFACE== SM == Stacking li info Warning dank B Tx enabledte co
uld be changed, kin+++ dly set date if == SM == Stacking lineeded
nk B Rx enabWED OCT 20 08:39:18 led2021
GM info NI_DOWN +++ 1
== SM == StackiWED OCT 20 08:39:18 ng link B status cha2021 GM nged: DOWN info De
l connection for sl+++ ot 1
== SM == StWED OCT 20 08:39:18 acking link A status changed:2021 GM DOWN info GMC: Sen
t Pause for slot 1

WED OCT 20 08:39:18WED OCT 20 08:47:28 2021 GM: info Start TimSTACK-MANAGERer on n (i_down 1 @ 163471927158
) WED OCT 20 0info8:39:23 2021 message:
+++ == SM == Stacking li VLAN info Timer nk B status changed:closed skt on ni 0 @ UP 1634719163

WED +++ OCT 20 08:39:23 == SM == Stacking li2021 VLAN nk B Tx enabled in
fo Timer closed skt for GVRP NI on ni 0+++ @ 1634719163
==WED OCT 20 08:39:23 SM == Stacking link2021 GM B Rx enabled info
Timer closed skt o+++ n ni 0 @ 1634719== SM == Stacking li163
nk A status chanWED OCT 20 08:39:41 ged: UP2021 STACK-MA
NAGER info == SM+++ == Stacking lin== SM == Stacking lik A status changed: nk A Tx enabledUP

W+++ ED OCT 20 08:39:== SM == Stacking li41 2021 STACK-MANAGnk A Rx enabledER
info == SM == Stac
king link A Tx enabWED OCT 20 08:47:31 led
: WED OCT 20 08:STACK-MANAGER39:41 2 (021 STACK-MANAGER27 info == SM == ) Stacking link A Rxinfo enabled
messagWED OCT 20 08:39:43 e:
+++ 2021 STACK-M Retaining Module IdANAGER info == SM for slot 1 unit 0 a == Stacking link A s 0status changed: D
OWN
WED OCT 20 08:40:28 2021 STACK-MANAGER info == SM == Stacking link A status changed: UP
WED OCT 20 08:40:28 2021 STACK-MANAGER info == SM == Stacking link A Tx enabled
WED OCT 20 08:40:28 2021 STACK-MANAGER info == SM == Stacking link A Rx enabled
WED OCT 20 08:40:28 2021 STACK-MANAGER info == SM == Stacking link A status changed: DOWN
WED OCT 20 08:40:28 2021 STACK-MANAGER info == SM == Stacking link A status changed: UP
WED OCT 20 08:40:28 2021 STACK-MANAGER info == SM == Stacking link A Tx enabled
WED OCT 20 08:40:28 2021 STACK-MANAGER info == SM == Stacking link A Rx enabled
WED OCT 20 08:40:29 2021 STACK-MANAGER info == SM == Stacking link A status changed: DOWN
WED OCT 20 08:40:29 2021 STACK-MANAGER info == SM == Stacking link A status changed: UP
WED OCT 20 08:40:29 2021 STACK-MANAGER info == SM == Stacking link A Tx enabled
WED OCT 20 08:40:29 2021 STACK-MANAGER info == SM == Stacking link A Rx enabled
WED OCT 20 08:40:29 2021 STACK-MANAGER info == SM == Stacking link A status changed: DOWN
WED OCT 20 08:40:30 2021 STACK-MANAGER info == SM == Stacking link A status changed: UP
WED OCT 20 08:40:30 2021 STACK-MANAGER info == SM == Stacking link A Tx enabled
WED OCT 20 08:40:30 2021 STACK-MANAGER info == SM == Stacking link A Rx enabled

WED OCT 20 08:40:33 2021 STACK-MANAGER info Retaining Module Id for slot 1 unit 0 as 0
WED OCT 20 08:47:35 WED OCT 20 08:40:35 2021 INTERFACE info Got connection from slot 1:443
: WED OCT 20 08:40:35 2021 INTERFACE info Got connection from slot 1:444
HSM-CHASSISWED OCT 20 08:40:36 ( 2021 CSM-CHASS101IS alert == CSM == P54_1 - Startup hold) request received info
message:
+++ WT8: Ni(1) insertion ED OCT 20 08:40:36 2detected021 CSM-C
HASSIS alert == CSM == P54_1 - Forwarding Hold Status FALSE response to Secondary CSM

WED OCT 20 08:40:38 2021 HSM-CHASSIS info T8: Ni(1) insertion detected
WED OCT 20 08:40:38 2021 HSM-CHASSIS info == HSM == csHsmUtilNiCtxBrdSend() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
WED OCT 20 08:40:40 2021 HSM-CHASSIS info === HSM === Power Supply 1 has been INSERTED
WED OCT 20 08:40:40 2021 HSM-CHASSIS info == HSM == Power Supply 1 is OPERATIONAL
WED OCT 20 08:40:40 2021 GM info GMC: Got connection from slot 65 tick 292317934
WED OCT 20 08:40:40 2021 VLAN info VMC: Got connection from slot 65
WED OCT 20 08:40:53 2021 HSM-CHASSIS info == HSM == NiNsmT1: NI STATE Rcvd (sl: 1), MsgFlag: 0 Local T.O. F
lag: 0
WED OCT 20 WED OCT 20 08:40:53 08:47:36 2021 HSM: -CHASSIS info =HSM-CHASSIS= HSM == (NI UP Received fro101m driver (sl =1) )
infoWED OCT 20 08 message:
+++ :40:53=== HSM === Power Sup 2021 HSM-CHASSISply 1 has been INSER info == HSM == cTEDsHsmUtilNiCtxBrdS
end() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
WED OCT 20 08:40:53 2021 INTERFACE info ## TX NI-ST Sl 2 ESMmsk 3 STKmsk 3 ##
WED OCT 20 08:40:53 2021 VLAN info CS_NI_UP msg received for slot 1 cfgState 1
WED OCT 20 08:40:53 2021 VLAN info CS_NI_UP InTakeover 0 vmcPrimaryCmm 1 NiDownRx 1
WED OCT 20 08:40:53 2021 VLAN info VMC: Sent Ok for slot 1
WED OCT 20 08:40:53 2021 INTERFACE info ## TX NI-ST Sl 1 ESMmsk 3 STKmsk 3 ##
WED OCT 20 08:40:53 2021 GM info NI_UP 1 292318743
WED OCT 20 08:40:53 2021 GM info GMC: Sent Ok for slot 1
WED OCT 20 08:40:54 2021 VLAN info Sent VM_CFG_RQT_DONE msg
WED OCT 20 08:40:54 2021 VLAN info Rx VM_CFG_ACK_DONE msg from slot 1
WED OCT 20 08:40:54 2021 VLAN info Tx VM_CFG_ACT_DONE to slot 1
WED OCT 20 08:40:54 2021 PORT-MGR alert createObject: dup index
WED OCT 20 08:40:54 2021 PORT-MGR alarm portav:port create failed!!
WED OCT 20 08:43:14 2021 STACK-MANAGER info == SM == Stacking link A status changed: DOWN
WED OCT 20 08:43:15 2021 STACK-MANAGER info == SM == NI 1 Down to LA NI
WED OCT 20 08:43:16 2021 INTERFACE info ## TX NI-ST Sl 2 ESMmsk 2 STKmsk 2 ##
WED OCT 20 08:43:18 2021 HSM-CHASSIS info T8: Ni(1) extraction detected
WED OCT 20 08:43:18 2021 HSM-CHASSIS info == HSM == csHsmUtilNiCtxBrdSend() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
WED OCT 20 08:43:18 2021 HSM-CHASSIS info === HSM === Power Supply 1 has been REMOVED
WED OCT 20 08:43:18 2021 INTERFACE info Close NI 1 ESM, socket 443 OK
WED OCT 20 08:43:18 2021 INTERFACE info Close NI 1 NiSUp, socket 444 OK
WED OCT 20 08:43:18 2021 GM info NI_DOWN 1
WED OCT 20 08:43:18 2021 GM info Del connection for slot 1
WED OCT 20 08:43:18 2021 GM info GMC: Sent Pause for slot 1
WED OCT 20 08:43:18 2021 GM info Start Timer on ni_down 1 @ 1634719398
WED OCT 20 08:43:18 2021 VLAN info CS_NI_DOWN/CS_NI_NOTPRESENT msg Rx for slot 1
WED OCT 20 08:43:18 2021 VLAN info Del connection for slot 1
WED OCT 20 08:43:18 2021 VLAN info VMC: Sent Pause for slot 1
WED OCT 20 08:43:18 2021 VLAN info Start Timer on ni_down 1 @ 1634719398
WED OCT 20 08:43:18 2021 INTERFACE info NIs are ready
WED OCT 20 08:43:18 2021 INTERFACE info Warning date could be changed, kindly set date if needed
WED OCT 20 08:43:19 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:43:19 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:43:19 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:43:20 2021 STACK-MANAGER info == SM == Stacking link B status changed: DOWN
WED OCT 20 08:43:23 2021 GM info Timer closed skt on ni 0 @ 1634719403
WED OCT 20 08:43:23 2021 VLAN info Timer closed skt on ni 0 @ 1634719403
WED OCT 20 08:43:23 2021 VLAN info Timer closed skt for GVRP NI on ni 0 @ 1634719403
WED OCT 20 08:44:05 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:44:05 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:44:05 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:44:05 2021 STACK-MANAGER info == SM == Stacking link B status changed: DOWN
WED OCT 20 08:44:05 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:44:05 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:44:05 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:44:06 2021 STACK-MANAGER info == SM == Stacking link B status changed: DOWN
WED OCT 20 08:44:07 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:44:07 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:44:07 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:44:11 2021 STACK-MANAGER info Retaining Module Id for slot 1 unit 0 as 0
WED OCT 20 08:44:13 2021 INTERFACE info Got connection from slot 1:443
WED OCT 20 08:44:13 2021 INTERFACE info Got connection from slot 1:444
WED OCT 20 08:44:13 2021 CSM-CHASSIS alert == CSM == P54_1 - Startup hold request received
WED OCT 20 08:44:13 2021 CSM-CHASSIS alert == CSM == P54_1 - Forwarding Hold Status FALSE response to Secondary CSM

WED OCT 20 08:44:15 2021 HSM-CHASSIS info T8: Ni(1) insertion detected
WED OCT 20 08:44:15 2021 HSM-CHASSIS info == HSM == csHsmUtilNiCtxBrdSend() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
WED OCT 20 08:44:17 2021 HSM-CHASSIS info === HSM === Power Supply 1 has been INSERTED
WED OCT 20 08:44:17 2021 HSM-CHASSIS info == HSM == Power Supply 1 is OPERATIONdhlNi_ni2ni_connect_toAL
_remote_niWED OCT 2(0 08:44:17 2021 GM info GM482C: Got connection )from slot 65 tick 292330947
116cce68WED OCT : 20 08:44:17 2021 DHLG NI: Connected a VLAN info VMC:lready established t Got connection fromo Slot 1. Hence skip slot 65
Retry.
WED OCdhlNi_ni2ni_connect_T 20 08:44:24 2021 to_remote_ni HSM-CHASS(IS info == HSM == NiNsmT1: NI STATE R482cvd (sl: 1), MsgFla)g: 0 Local T.O. Flag116cce83: 0
: WED OCT 2DHLG NI: Connected a0 08:44:24 2021 Hlready established tSM-CHASSIS info =o Slot 1. Hence skip Retr= HSM == NI UP Receivy.
ed from driver (sl =1)
WED OCT 20 08:44:24 2021 HSM-CHASSIS info == HSM == csHsmUtilNiCtxBrdSend() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
WED OCT 20 08:44:24 2021 INTERFACE info ## TX NI-ST Sl 2 ESMmsk 3 STKmsk 3 ##
WED OCT 20 08:44:24 2021 VLAN info CS_NI_UP msg received for slot 1 cfgState 1
WED OCT 20 08:44:24 2021 VLAN info CS_NI_UP InTakeover 0 vmcPrimaryCmm 1 NiDownRx 1
WED OCT 20 08:44:24 2021 VLAN info VMC: Sent Ok for slot 1
WED OCT 20 08:44:24 2021 INTERFACE info ## TX NI-ST Sl 1 ESMmsk 3 STKmsk 3 ##
WED OCT 20 08:44:24 2021 GM info NI_UP 1 292331404
WED OCT 20 08:44:24 2021 GM info GMC: Sent Ok for slot 1
WED OCT 20 08:44:25 2021 VLAN info Sent VM_CFG_RQT_DONE msg
WED OCT 20 08:44:25 2021 VLAN info Rx VM_CFG_ACK_DONE msg from slot 1
WED OCT 20 08:44:25 2021 VLAN info Tx VM_CFG_ACT_DONE to slot 1
WED OCT 20 08:44:25 2021 PORT-MGR alert createObject: dup index
WED OCT 20 08:44:25 2021 PORT-MGR alarm portav:port create failed!!
WED OCT 20 08:46:35 2021 STACK-MANAGER info == SM == Stacking link B status changed: DOWN
WED OCT 20 08:46:35 2021 STACK-MANAGER info == SM == NI 1 Down to LA NI
WED OCT 20 08:46:36 2021 INTERFACE info ## TX NI-ST Sl 2 ESMmsk 2 STKmsk 2 ##
WED OCT 20 08:46:37 2021 HSM-CHASSIS info T8: Ni(1) extraction detected
WED OCT 20 08:46:37 2021 HSM-CHASSIS info == HSM == csHsmUtilNiCtxBrdSend() nsm CS_HSM_NSM_ST_OP, poweroff 0 Ni1
WED OCT 20 08:46:37 2021 HSM-CHASSIS info === HSM === Power Supply 1 has been REMOVED
WED OCT 20 08:46:37 2021 VLAN info CS_NI_DOWN/CS_NI_NOTPRESENT msg Rx for slot 1
WED OCT 20 08:46:37 2021 VLAN info Del connection for slot 1
WED OCT 20 08:46:37 2021 VLAN info VMC: Sent Pause for slot 1
WED OCT 20 08:46:37 2021 VLAN info Start Timer on ni_down 1 @ 1634719597
WED OCT 20 08:46:37 2021 INTERFACE info Close NI 1 ESM, socket 444 OK
WED OCT 20 08:46:37 2021 INTERFACE info Close NI 1 NiSUp, socket 443 OK
WED OCT 20 08:46:37 2021 INTERFACE info NIs are ready
WED OCT 20 08:46:37 2021 INTERFACE info Warning date could be changed, kindly set date if needed
WED OCT 20 08:46:37 2021 GM info NI_DOWN 1
WED OCT 20 08:46:37 2021 GM info Del connection for slot 1
WED OCT 20 08:46:37 2021 GM info GMC: Sent Pause for slot 1
WED OCT 20 08:46:37 2021 GM info Start Timer on ni_down 1 @ 1634719597
WED OCT 20 08:46:39 2021 STACK-MANAGER info == SM == Stacking link B status changed: UP
WED OCT 20 08:46:39 2021 STACK-MANAGER info == SM == Stacking link B Tx enabled
WED OCT 20 08:46:39 2021 STACK-MANAGER info == SM == Stacking link B Rx enabled
WED OCT 20 08:46:41 2021 STACK-MANAGER info == SM == Stacking link B status changed: DOWN
WED OCT 20 08:46:42 2021 VLAN info Timer closed skt on ni 0 @ 1634719602
WED OCT 20 08:46:42 2021 VLAN info Timer closed skt for GVRP NI on ni 0 @ 1634719602
WED OCT 20 08:46:42 2021 GM info Timer closed skt on ni 0 @ 1634719602

-> show stack status

Redundant cable status : present
Tokens used : -6
Tokens available : 38

-> show stack topology
Link A Link A Link B Link B
NI Role State Saved Link A Remote Remote Link B Remote Remote
Slot State NI Port State NI Port
----+-----------+--------+------+-------+-------+-------+-------+-------+-------
1 SECONDARY RUNNING 1 UP 2 StackB UP 2 StackA
2 PRIMARY RUNNING 2 UP 1 StackB UP 1 StackA

->
***********************************

[silvio]

If possible try to reboot the whole stack together.
The switches are very old - maybe one is broken now.
best regards
Silvio

[jaygro]

+1 for entire stack reboot.