For 2960 series, there is previous post about it:
 |
| Cisco Catalyst WS-C3850-48T-S and Components (Unboxed) |
 |
| Cisco Catalyst WS-C3850-48T-S and Components in the Boxes |
 |
| Cisco Catalyst WS-C3850-48T-S Back |
 |
| Cisco Catalyst WS-C3850-48T-S Front |
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| Cisco Catalyst 3850Â Plugged in Power Stack Cable and Data Stack Cable |
 |
| Cisco Catalyst 3850 10G Module (C3850-NM-2-10G) |
1. Connect Physical Power Stack Cables and Data Stack Cables:
Make sure you plug your Data Stack Cables into right direction. Other devices in your rack may block your view to see if you have fully plugged your data cables in.
2. Connect with just one power cable
Booting...
Interface GE 0 link down***ERROR: PHY link is down
Getting rest of image
Reading full image into memory...Check base package header ...: done = 16384
Getting rest of image
Reading full image into memory....done
Reading full base package into memory...: done = 83293932
Bundle Image
--------------------------------------
Kernel Address : 0x5342e34c
Kernel Size : 0x41852f/4293935
Initramfs Address : 0x5384687c
Initramfs Size : 0xe7766d/15169133
Compression Format: .mzip
Bootable image at @ ram:0x5342e34c
Bootable image segment 0 address range [0x81100000, 0x82140000] is in range [0x80180000, 0x90000000].
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@boot_system: 377
Loading Linux kernel with entry point 0x8166a600 ...
Bootloader: Done loading app on core_mask: 0xf
### Launching Linux Kernel (flags = 0x5)
All packages are Digitally Signed
Starting System Services
FIPS(NGWC): Flash Key Check : Begin
FIPS(NGWC): Flash Key Check : End, Not Found, FIPS Mode Not Enabled
MCU type = 0 and image name is main_mcu_ucode_bundle_6_2_0.tar
Final tar file: main_mcu_ucode_bundle_6_2_0.tar
#######################################################################################################################
Restricted Rights Legend
Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.
cisco Systems, Inc.
170 West Tasman Drive
San Jose, California 95134-1706
Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.06E RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Sat 17-Dec-16 00:22 by prod_rel_team
Cisco IOS-XE software, Copyright (c) 2005-2015 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.
(http://www.gnu.org/licenses/gpl-2.0.html) For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.
FIPS: Flash Key Check : Begin
FIPS: Flash Key Check : End, Not Found, FIPS Mode Not Enabled
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
[email protected].
cisco WS-C3850-48T (MIPS) processor with 4194304K bytes of physical memory.
Processor board ID FOC2126L2BR
2048K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
250456K bytes of Crash Files at crashinfo:.
1609272K bytes of Flash at flash:.
0K bytes of Dummy USB Flash at usbflash0:.
0K bytes of at webui:.
Base Ethernet MAC Address : 70:6b:b9:e2:25:80
Motherboard Assembly Number : 73-16296-08
Motherboard Serial Number : FOC212567MK
Model Revision Number : AA0
Motherboard Revision Number : A0
Model Number : WS-C3850-48T
System Serial Number : FOC2126L2BR
--- System Configuration Dialog ---
Enable secret warning
----------------------------------
In order to access the device manager, an enable secret is required
If you enter the initial configuration dialog, you will be prompted for the enable secret
If you choose not to enter the intial configuration dialog, or if you exit setup without setting the enable secret,
please set an enable secret using the following CLI in configuration mode-
enable secret 0 <cleartext password>
----------------------------------
Would you like to enter the initial configuration dialog? [yes/no]: no
Would you like to terminate autoinstall? [yes]:
Press RETURN to get started!
Switch>en
Switch#
Switch#show ver
Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.06E RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Sat 17-Dec-16 00:22 by prod_rel_team
Cisco IOS-XE software, Copyright (c) 2005-2015 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.
(http://www.gnu.org/licenses/gpl-2.0.html) For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.
ROM: IOS-XE ROMMON
BOOTLDR: CAT3K_CAA Boot Loader (CAT3K_CAA-HBOOT-M) Version 3.58, RELEASE SOFTWARE (P)
Switch uptime is 11 minutes
Uptime for this control processor is 16 minutes
System returned to ROM by Power Failure
System image file is "flash:packages.conf"
Last reload reason: Power Failure
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
[email protected].
License Level: Ipbase
License Type: Permanent
Next reload license Level: Ipbase
cisco WS-C3850-48T (MIPS) processor with 4194304K bytes of physical memory.
Processor board ID FOC2126L2BR
1 Virtual Ethernet interface
52 Gigabit Ethernet interfaces
4 Ten Gigabit Ethernet interfaces
2048K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
250456K bytes of Crash Files at crashinfo:.
1609272K bytes of Flash at flash:.
0K bytes of Dummy USB Flash at usbflash0:.
0K bytes of at webui:.
Base Ethernet MAC Address : 70:6b:b9:e2:25:80
Motherboard Assembly Number : 73-16296-08
Motherboard Serial Number : FOC212567MK
Model Revision Number : AA0
Motherboard Revision Number : A0
Model Number : WS-C3850-48T
--More--
*Oct 22 14:41:30.623: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enSystem Serial Number : FOC2126L2BR
Switch Ports Model SW Version SW Image Mode
------ ----- ----- ---------- ---------- ----
* 1 56 WS-C3850-48T 03.06.06E cat3k_caa-universalk9 INSTALL
Configuration register is 0x102
Switch#
Switch#show switch
Switch/Stack Mac Address : 706b.b9e2.2580 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
------------------------------------------------------------
*1 Active 706b.b9e2.2580 1 V07 Ready
Switch#
Switch#show inventory
NAME: "c38xx Stack", DESCR: "c38xx Stack"
PID: WS-C3850-48T , VID: V07 , SN: FOC2126L2BR
NAME: "Switch 1", DESCR: "WS-C3850-48T-S"
PID: WS-C3850-48T-S , VID: V07 , SN: FOC2126L2BR
Switch#
Switch#
Switch#
Switch#
Switch#show log
Syslog logging: enabled (0 messages dropped, 1 messages rate-limited, 0 flushes, 0 overruns, xml disabled, filtering disabled)
No Active Message Discriminator.
No Inactive Message Discriminator.
Console logging: level debugging, 1 messages logged, xml disabled,
filtering disabled
Monitor logging: level debugging, 0 messages logged, xml disabled,
filtering disabled
Buffer logging: level debugging, 40 messages logged, xml disabled,
filtering disabled
Exception Logging: size (4096 bytes)
Count and timestamp logging messages: disabled
File logging: disabled
Persistent logging: disabled
No active filter modules.
Trap logging: level informational, 41 message lines logged
Logging Source-Interface: VRF Name:
Log Buffer (16384 bytes):
*Oct 22 14:30:17.326: envvar DC_COPY is not set
*Oct 22 14:29:56.611: *%INIT-7-SWITCH_BOOTING: 1 wcm: Switch booting...
*Oct 22 14:30:30.956: %LINK-3-UPDOWN: Interface GigabitEthernet0/0, changed state to down
*Oct 22 14:30:30.956: %LINK-3-UPDOWN: Interface LIIN0, changed state to up
*Oct 22 14:30:30.958: %NGWC_PLATFORM_FEP-6-FRU_PS_OIR: Switch 1: FRU power supply A inserted
*Oct 22 14:30:30.958: %NGWC_PLATFORM_FEP-1-FRU_PS_ACCESS: Switch 1: power supply A is not responding
*Oct 22 14:30:30.960: %NGWC_PLATFORM_FEP-1-FRU_PS_SIGNAL_FAULTY: Switch 1: signal on power supply A is faulty
*Oct 22 14:30:30.960: %NGWC_PLATFORM_FEP-6-FRU_PS_OIR: Switch 1: FRU power supply B inserted
*Oct 22 14:30:30.960: %NGWC_PLATFORM_FEP-1-FRU_PS_ACCESS: Switch 1: power supply B is not responding
*Oct 22 14:30:30.960: %NGWC_PLATFORM_FEP-1-FRU_PS_SIGNAL_FAULTY: Switch 1: signal on power supply B is faulty
*Oct 22 14:30:30.975: %PLATFORM_STACKPOWER-6-CABLE_EVENT: Switch 1 stack power cable 2 inserted
*Oct 22 14:30:30.975: %PLATFORM_STACKPOWER-6-LINK_EVENT: Switch 1 stack power protocol is up on cable 2
*Oct 22 14:30:30.975: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:30:31.008: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan
*Oct 22 14:30:33.263: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to down
*Oct 22 14:30:33.263: %LINEPROTO-5-UPDOWN: Line protocol on Interface LIIN0, changed state to up
*Oct 22 14:30:35.813: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
*Oct 22 14:31:01.336: %STACKMGR-6-ACTIVE_READY: 1 stack-mgr: Active switch 1 is ready. System has been configured
*Oct 22 14:31:01.567: %SYS-5-RESTART: System restarted --
Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.06E RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Sat 17-Dec-16 00:22 by prod_rel_team
*Oct 22 14:31:01.578: %AUTHMGR_SPI-6-START: Auth Manager SPI server started
*Oct 22 14:31:05.079: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/1/1, changed state to down
*Oct 22 14:31:05.079: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/1/2, changed state to down
*Oct 22 14:31:05.079: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/1/3, changed state to down
*Oct 22 14:31:05.079: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/1/4, changed state to down
*Oct 22 14:31:05.080: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/1, changed state to down
*Oct 22 14:31:05.080: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/2, changed state to down
*Oct 22 14:31:05.080: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/3, changed state to down
*Oct 22 14:31:05.080: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet1/1/4, changed state to down
*Oct 22 14:31:30.621: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:32:30.621: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:33:30.622: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:34:30.621: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:35:30.621: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:36:30.624: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:37:30.624: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:38:30.622: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:39:30.623: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:40:30.621: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:41:30.623: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
Switch#
3. Connect Second Power cable on different Switch Member.Â
It will take about 3 minutes to get a log about this new power supply is restored.
Switch#
*Oct 22 14:42:30.621: %PLATFORM_STACKPOWER-4-INSUFFICIENT_PWR: Switch 1's power stack does not have enough power
*Oct 22 14:43:17.154: %NGWC_PLATFORM_FEP-1-FRU_PS_ACCESS: Switch 1: power supply A is responding
*Oct 22 14:43:17.154: %NGWC_PLATFORM_FEP-1-FRU_PS_ACCESS: Switch 1: power supply B is not responding
*Oct 22 14:43:20.188: %NGWC_PLATFORM_FEP-1-FRU_PS_SIGNAL_OK: Switch 1: signal on power supply A is restored
Switch#
Switch#show switch
Switch/Stack Mac Address : 706b.b9e2.2580 - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
------------------------------------------------------------
*1 Active 706b.b9e2.2580 1 V07 Ready
2 Member cc5a.53eb.1a80 1 0 Initializing
Switch#
Finally, another 2-3 minutes second switch 2 is ready.
Switch#
*Oct 22 14:48:35.574: %NGWC_PLATFORM_FEP-1-FRU_PS_ACCESS: Switch 1: power supply B is not responding
*Oct 22 14:48:57.362: %STACKMGR-6-SWITCH_ADDED: 1 stack-mgr: Switch 2 has been added to the stack.
*Oct 22 14:49:02.451: %STACKMGR-6-SWITCH_READY: 1 stack-mgr: Switch 2 is ready.
*Oct 22 14:49:02.455: Starting SWITCH-ADD sequence, switch 2
*Oct 22 14:49:03.422: %NGWC_USB_CONSOLE-6-CONFIG_ENABLE: Switch 2: Console media-type changed to default
*Oct 22 14:49:06.935: %NGWC_PLATFORM_FEP-6-FRU_PS_OIR: Switch 2: FRU power supply A inserted
*Oct 22 14:49:06.935: %NGWC_PLATFORM_FEP-1-FRU_PS_ACCESS: Switch 2: power supply A is not responding
*Oct 22 14:49:06.940: %NGWC_PLATFORM_FEP-1-FRU_PS_SIGNAL_FAULTY: Switch 2: signal on power supply A is faulty
*Oct 22 14:49:06.940: %NGWC_PLATFORM_FEP-6-FRU_PS_OIR: Switch 2: FRU power supply B inserted
*Oct 22 14:49:07.074: %PLATFORM_STACKPOWER-6-CABLE_EVENT: Switch 2 stack power cable 2 inserted
*Oct 22 14:49:07.074: %PLATFORM_STACKPOWER-6-LINK_EVENT: Switch 2 stack power protocol is up on cable 2
*Oct 22 14:49:23.306: SWITCH-ADD sequence complete, switch 2
*Oct 22 14:49:25.732: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/1/1, changed state to down
*Oct 22 14:49:25.732: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/1/2, changed state to down
*Oct 22 14:49:25.732: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/1/3, changed state to down
*Oct 22 14:49:25.733: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/1/4, changed state to down
*Oct 22 14:49:25.733: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet2/1/1, changed state to down
*Oct 22 14:49:25.733: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet2/1/2, changed state to down
*Oct 22 14:49:25.733: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet2/1/3, changed state to down
*Oct 22 14:49:25.734: %LINEPROTO-5-UPDOWN: Line protocol on Interface TenGigabitEthernet2/1/4, changed state to down
*Oct 22 14:51:03.622: %STACKMGR-6-STANDBY_ELECTED: 1 stack-mgr: Switch 2 has been elected STANDBY.
*Oct 22 14:51:03.922: %REDUNDANCY-5-PEER_MONITOR_EVENT: Active detected a standby insertion (raw-event=PEER_FOUND(4))
*Oct 22 14:51:03.922: %REDUNDANCY-5-PEER_MONITOR_EVENT: Active detected a standby insertion (raw-event=PEER_FOUND(4))
*Oct 22 14:51:03.922: %REDUNDANCY-5-PEER_MONITOR_EVENT: Active detected a standby insertion (raw-event=PEER_REDUNDANCY_STATE_CHANGE(5))
*Oct 22 14:51:03.922: %REDUNDANCY-5-PEER_MONITOR_EVENT: Active detected a standby insertion (raw-event=PEER_REDUNDANCY_STATE_CHANGE(5))
*Oct 22 14:51:36.321: %PLATFORM_HA-6-REDUNDANCY_MODE: ACTIVE supervisor initializing for SSO mode
*Oct 22 14:51:47.569: envvar DC_COPY is not set (Switch-2)
*Oct 22 14:51:12.835: *%INIT-7-SWITCH_BOOTING: STANDBY:2 wcm: Switch booting... (Switch-2)
*Oct 22 14:52:00.926: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan (Switch-2)
*Oct 22 14:52:03.169: %LINK-3-UPDOWN: Interface LIIN0, changed state to up (Switch-2)
*Oct 22 14:52:04.194: %LINEPROTO-5-UPDOWN: Line protocol on Interface LIIN0, changed state to up (Switch-2)
*Oct 22 14:52:05.592: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down (Switch-2)
System has been configured (Switch-2)
*Oct 22 14:52:37.647: %SYS-5-RESTART: System restarted -- (Switch-2)
Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03.06.06E RELEASE SOFTWARE (fc1) (Switch-2)
Technical Support: http://www.cisco.com/techsupport (Switch-2)
Copyright (c) 1986-2016 by Cisco Systems, Inc. (Switch-2)
Compiled Sat 17-Dec-16 00:22 by prod_rel_team (Switch-2)
*Oct 22 14:52:37.654: %AUTHMGR_SPI-6-START: Auth Manager SPI server started (Switch-2)
*Oct 22 14:52:37.660: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to down (Switch-2)
*Oct 22 14:52:44.282: %HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded
*Oct 22 14:52:45.268: %RF-5-RF_TERMINAL_STATE: 1 ha_mgr: Terminal state reached for (SSO)
*Oct 22 14:52:58.551: %SSH-5-ENABLED: SSH 1.99 has been enabled (Switch-2)
*Oct 22 14:52:58.596: %PKI-6-AUTOSAVE: Running configuration saved to NVRAM (Switch-2)
Switch#show switch Switch/Stack Mac Address : 706b.b9e2.2580 - Local Mac Address Mac persistency wait time: Indefinite H/W Current Switch# Role Mac Address Priority Version State ------------------------------------------------------------ *1 Active 706b.b9e2.2580 1 V07 Ready 2 Member cc5a.53eb.1a80 1 V07 Ready
4. Verify Stack Cable Connections:
Switch#show switch stack-ports
Switch# Port1 Port2
----------------------------
1 OK OK
2 OK OK
Switch#show switch stack-ring speed
Stack Ring Speed : 480G
Stack Ring Configuration: Full
Stack Ring Protocol : StackWise
Notes:
- Console Ports:The active console can be accessed via any of the console ports in the stack.
- Stack Member Priority:Â A higher priority value for a stack member increases the probability of it being elected active switch and retaining its stack member number. The priority value can be 1 to 15. The default priority value is 1. You can display the stack member priority value by using the show switch EXEC command.
- Active Switch Election: The active switch is elected or reelected based on one of these factors and in the order listed:
- The switch that is currently the active switch.
- The switch with the highest stack member priority value.
- The switch with the shortest start-up time.
- The switch with the lowest MAC address.
- Cisco recommends assigning the highest priority value to the switch that you prefer to be the active switch. This ensures that the switch is reelected as active switch if a reelection occurs.
- You can use the ACTV LED on the switch to see if the switch is the active switch.
- Off
The switch is not the active switch.
Note   For a standalone switch, this LED is off. GreenThe switch is the active switch.AmberError during active switch election.Blinking greenSwitch is a standby member of a data stack and assumes active responsibilities if the current active switch fails.
References:
- Cisco Catalyst 3850 Series Switches Data Sheet
- How to Form a Catalyst 3850 Data-Stack and Power-Stack
- Cisco Catalyst 2960X and 2960S Stacking
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