WS-C2960XR-48LPD-I Stack SW rebooted .

[abhisheknsuccess]

Hi All,

Earlier WS-C2960XR-48LPD-I switch has rebooted its all member stack only, the second time now it rebooted whole switch master & stack. (Thinking issue between Master & stack handshake, Switches Priority & Model is already defined & tighten stack cable)

We have New IOS 15.2(7)E5 & POE used ports are also very less on switch.

Only abnormal i could see is CPU utilization high. not sure if this is the reason of abnormal reboot.

Logs

100 **
90 **
80 **
70 **
60 * * * * ********
50 *****************
40 #################
30 #################
20 #################
10 #################
0....5....1....1....2....2....3....3....4....4....5....5....6....6....7..
0 5 0 5 0 5 0 5 0 5 0 5 0
CPU% per hour (last 72 hours)
* = maximum CPU% # = average CPU%

Apr 16 17:04:49.508: Flexstack module is 1
Apr 16 17:06:55.253: %STACKMGR-4-SWITCH_ADDED: Switch 2 has been ADDED to the stack
Apr 16 17:06:55.253: %STACKMGR-4-SWITCH_ADDED: Switch 3 has been ADDED to the stack
Apr 16 17:06:55.253: %STACKMGR-4-SWITCH_ADDED: Switch 4 has been ADDED to the stack
Apr 16 17:06:55.253: %STACKMGR-4-SWITCH_ADDED: Switch 6 has been ADDED to the stack
Apr 16 17:06:55.253: %STACKMGR-4-SWITCH_ADDED: Switch 7 has been ADDED to the stack
Apr 16 17:06:55.372: %STACKMGR-4-SWITCH_ADDED: Switch 5 has been ADDED to the stack
Apr 16 17:07:12.215: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed state to down
Apr 16 17:07:17.647: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan
Apr 16 17:07:18.287: %PNP-6-PNP_DISCOVERY_STARTED: PnP Discovery started
Apr 16 17:08:53.263 UTC: %SYS-5-LOG_CONFIG_CHANGE: Buffer logging: level debugging, xml disabled, filtering disabled, size (10000000)

Apr 16 22:39:06.629 IST: %SYS-5-RESTART: System restarted --

[balaji.bandi]

check what is the process getting CPU hike - show process CPU sorted | in 0.00 

post show switch

or try upgrading to new suggested IP and observe the situation

[abhisheknsuccess]

which new IP upgrade you referring ?? 

After reboot it is not showing hike now. below are the current o/p: 

(Switch 1 is removed from stack, we have 6 Switch below .

CPU utilization for five seconds: 40%/0%; one minute: 41%; five minutes: 40%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
180 27598981 2632745 10482 22.55% 22.41% 22.39% 0 Hulc LED Process
190 797 236 3377 0.77% 0.71% 0.18% 1 SSH Process
197 395481 250784 1576 0.41% 0.33% 0.30% 0 HRPC qos request
196 389544 21161 18408 0.29% 0.31% 0.29% 0 HQM Stack Proces
230 96524 188758 511 0.23% 0.11% 0.08% 0 IP Input
144 258399 689049 375 0.23% 0.18% 0.18% 0 HRPC pm-counters
96 225085 21149 10642 0.17% 0.18% 0.17% 0 HULC Thermal Pro
260 47511 1056378 44 0.11% 0.04% 0.05% 0 UDLD
60 75098 21149 3550 0.05% 0.05% 0.05% 0 Compute load avg
94 76844 4636549 16 0.05% 0.07% 0.06% 0 RedEarth Tx Mana
216 139201 114515 1215 0.05% 0.09% 0.11% 0 CDP Protocol
143 173356 105722 1639 0.05% 0.09% 0.13% 0 hpm counter proc
251 62905 241073 260 0.05% 0.02% 0.04% 0 HULC DAI Process
443 72898 181925 400 0.05% 0.06% 0.06% 0 LLDP Protocol

Switch# Role Mac Address Priority Version State
----------------------------------------------------------
1 Member 0000.0000.0000 0 0 Provisioned
*2 Master 7802.b135.d484 13 4 Ready

try upgrading to new suggested IP and observe the situation: What is this recommendation? i did not understood.
3 Member 308b.b21c.1d06 12 4 Ready
4 Member c064.e487.7e85 11 4 Ready
5 Member 7802.b135.7402 10 4 Ready
6 Member 5061.bfe8.ba85 9 4 Ready
7 Member 04eb.407e.2c09 14 4 Ready

[balaji.bandi]

Switch# Role Mac Address Priority Version State
----------------------------------------------------------
1 Member 0000.0000.0000 0 0 Provisioned
*2 Master 7802.b135.d484 13 4 Ready

as per output, you have only 1 switch in the stack - how many switches are originally or physically connected.

suggest to power down whole stack and power up and check (in the maintenance window)

[marce1000]

- Connect to stack master (SSH) with

                  https://cway.cisco.com/cli/

 you can them run for instance 'System Diagnostics' and 'Crashdump Analyzer'

   M.

[abhisheknsuccess]

Are you advising to open a support case TAC? These devices are not in support & EOL.