S3910 Series Switches Reset and
Recovery System Configuration Guide
Models: S3910-24TS; S3910-48TS; S3910-24TF
CONFIGURATION GUIDE
S3910 Series Switches Reset and Recovery System
*If you forget the device password, but want to restore the device to the factory settings, you can refer to the “password recovery” operation, enter the operating mode and restore the factory settings as follows.
Restore Factory Settings
When the device can enter the operating mode normally:
Enter Privileged Mode
S3910>enable ——>Enter privileged mode
View Device Flash Current File List
S3910#dir ——->View the current flash file list
Directory of flash:/
| Number | Properties | Size | Time | Name |
| 1 | drw- | 288B | Wed Mar 11 05:20:00 2020 | at |
| 2 | drwx | 160B | Wed Mar 11 05:19:54 2020 | dev |
| 3 | drwx | 160B | Wed Mar 11 05:19:45 2020 | rep |
| 4 | drwx | 224B | Wed Mar 11 05:19:46 2020 | var |
| 5 | drwx | 160B | Wed Mar 11 05:19:56 2020 | addr |
| 6 | -rw- | 0B | Wed Mar 11 05:20:04 2020 | msg_rtp_lvl2.txt |
| 7 | -rw- | 0B | Wed Mar 11 05:21:15 2020 | msg_rtp_lvl3.txt |
| 8 | -rw- | 0B | Wed Mar 11 05:21:02 2020 | ssc_fp_appmng_debug.txt |
| 9 | -rwx | 82B | Wed Jul 8 15:49:43 2020 | config_vsu.dat |
| 10 | -rw- | 1.4k | Wed Jul 8 15:49:43 2020 | config.text |
| 11 | -rw- | 0B | Wed Mar 11 05:20:04 2020 | ss_ds_debug.txt |
| 12 | -rwx | 21B | Wed Jul 8 15:49:42 2020 | syslog_rfc5424_flag.txt |
| 13 | -rwx | 620B | Wed Mar 11 05:19:55 2020 | rsa_private.bin |
| 14 | -rwx | 616B | Wed Mar 11 05:19:54 2020 | rsa1_private.bin |
| 15 | -rw- | 0B | Wed Mar 11 05:20:01 2020 | ss_comm.txt |
| 16 | drwx | 160B | Wed Mar 11 05:19:56 2020 | upgrade |
| 17 | drwx | 4.6k | Wed Mar 11 06:54:14 2020 | tech_vsd0 |
| 18 | drwx | 224B | Wed Mar 11 05:19:56 2020 | unify_manage |
| 19 | drwx | 312B | Wed May 13 17:22:00 2020 | syslog |
| 20 | -rw- | 0B | Wed Mar 11 05:20:49 2020 | policy_adjust_debug.txt |
| 21 | drw- | 224B | Wed Mar 11 05:20:49 2020 | arpswitch |
| 22 | -rw- | 0B | Wed Mar 11 05:20:04 2020 | ss_ds_timeout.txt |
| 23 | -rw- | 2.2k | Tue Jun 30 17:28:49 2020 | standalone.text |
13 files, 10 directories
6,103,040 bytes data total (5,189,632 bytes free)
266,338,304 bytes flash total (5,189,632 bytes free)
Delete the Configuration File “config.text”
S3910#delete config.text —–>Delete the configuration file “config.text”
Do you want to delete [flash:/config.text]? [Y/N]:y
File “config.text” is deleted.
Restart the Device
The device will return to factory settings after restart:
S3910#reload —–>Restart the switch
Reload system?(Y/N) y
Press RETURN to get started
Password Recovery
If the administrator forgets the login password and cannot enter the configuration mode for configuration, then you need to use the configuration line to enter the CTRL layer for password recovery.
*Notes on password recovery
- When doing password recovery, please prepare the console line first.
- Password recovery is an operation that is completed when you enter the CTRL layer when you restart the device. You need to disconnect the network to proceed. Please perform password recovery when it is convenient to disconnect the network.
- Please strictly follow the operation steps, improper operation will cause configuration loss.
- The password recovery of the switch is the password recovery of saving the configuration mode.
- After entering the CLI command line interface, if you do not enter any keys within 10 minutes, you still need to enter the password after the timeout. Or the password has not been changed after input, the device will use the previous password after the next restart.
Network Topology
Configuration Steps
2.2.1 Connect the Console Port of the Device with a Configuration Cable
2.2.2 Use HyperTerminal to Configure Network Devices
- Manually power off and restart the device
- When the Ctrl+C prompt appears, press the CTRL and C keys simultaneously on the keyboard to enter the bootloader menu
Boot 1.2.28-0c4a1bf (Feb 09 2017 – 17:14:53)
I2C: ready
DRAM: 508 MiB
NAND: (ONFI), chipsize 256 MiB
In: serial
Out: serial
Err: serial
Unlocking L2 Cache …Done arm_clk=1000MHz, axi_clk=400MHz, apb_clk=100MHz, arm_periph_clk=500MHz
SETMAC: Setmac operation was performed at 2020-03-10 11:45:48 (versss Ctrl+C to enter Boot Menu
Net: eth-0
Entering simple UI….
====== BootLoader Menu(“Ctrl+Z” to upper level) ======
TOP menu items.
*********************************
0. Tftp utilities.
1. XModem utilities.
2. Run main.
3. SetMac utilities.
4. Scattered utilities.
5. Set Module Serial
************************************************ - After entering the bootloader menu, enter the Ctrl and Q keys simultaneously to enter the uboot command line
- In the uboot command line state, enter the command main_config_password_clear.
====== BootLoader Menu(“Ctrl+Z” to upper level) ======
TOP menu items.
*********************************
0. Tftp utilities.
1. XModem utilities.
2. Run main.
3. SetMac utilities.
4. Scattered utilities.
5. Set Module Serial
************************************************
Press a key to run the command: ——>enter “Ctrl” and “Q “, in the uboot command line bootloader#main_config_password_clear - The device will automatically run the main program and print the log
Press a key to run the command: bootloader#main_config_password_clear
Creating 1 MTD partitions on “nand0”: 0x000001000000-0x000002e00000 : “mtd=6”
UBI: attaching mtd1 to ubi0
UBI: physical eraseblock size: 131072 bytes (128 KiB)
UBI: logical eraseblock size: 126976 bytes
UBI: smallest flash I/O unit: 2048
UBI: VID header offset: 2048 (aligned 2048)
UBI: data offset: 4096
UBI: attached mtd1 to ubi0
UBI: MTD device name: “mtd=6”
UBI: MTD device size: 30 MiB
UBI: number of good PEBs: 240
UBI: number of bad PEBs: 0
UBI: max. allowed volumes: 128
UBI: wear-leveling threshold: 4096
UBI: number of internal volumes: 1
UBI: number of user volumes: 1
UBI: available PEBs: 19
UBI: total number of reserved PEBs: 221
UBI: number of PEBs reserved for bad PEB handling: 2
UBI: max/mean erase counter: 2/1
UBIFS: recovery needed
UBIFS: recovery deferred
UBIFS: mounted UBI device 0, volume 0, name “kernel”
UBIFS: mounted read-only
UBIFS: file system size: 26030080 bytes (25420 KiB, 24 MiB, 205 LEBs)
UBIFS: journal size: 3682304 bytes (3596 KiB, 3 MiB, 29 LEBs)
UBIFS: media format: w4/r0 (latest is w4/r0)
UBIFS: default compressor: LZO
UBIFS: reserved for root: 0 bytes (0 KiB)
Unmounting UBIFS volume kernel!
Uncompressing Kernel Image … OK
Loading Device Tree to 823fc000, end 823ff94e … OK Starting kernel … - You can enter the configuration CLI command line interface without a password at this time.
S3910>enable S3910#
NOTE: After entering the CLI command line interface, if there is no button, the password is required when entering again. The default timeout is 10min. Please change the password in time before timeout. - Change password
Functional Verification
Log in to the switch again, and log in with the new user name and password to confirm that the login is successful.
Documents / Resources
 | FS S3910 Series Switches Reset and Recovery System [pdf] User Guide S3910 Series Switches Reset and Recovery System, S3910 Series, Switches Reset and Recovery System, Reset and Recovery System, Recovery System |