Junos
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Junos

Recovery issue

[ Edited ]
‎08-16-2019 07:48 AM

Hi, I have an EX2300 Juniper switches. and it can not be loaded. It just stacks on a boot-up loading. I have a media bootable USB, a snapshot USB recovery but they did not work, because there is no prompt or any option to into. It's just keeping on the loop.

I attached the shot screen of the loop. I hope you guys will have a solution.

Thank you

 

U-Boot 2016.01-rc1 (Nov 11 2016 - 14:26:00 -0800) VERSION=1.3.2

U-Boot code: F0000000 -> F007C59C BSS: -> F00DA238
DRAM: DEV ID = 0xb064
SKU ID = 0xb064
DDR type: DDR3
MEMC 0 DDR speed = 800MHz
PHY revision version: 0x00a1e003
A Series - PHY Initialization (PHY index: 00)
A01. Turn off CKE
A02. Configure timing parameters
A03. Configure PHY PLL
PHY PLL Configuration
Fref.............: 50 MHz
Data rate........: 1600 Mbps
PLL locked.
A04. Configure reference voltage
A05. Compute VDL step size
VDL calibration complete.
VDL step size....: 7.575 ps
UI size..........: 82.500 steps
A06. Configure ADDR/CTRL VDLs
A07. Disable Virtual VTT
A08. ZQ calibration
P drive..........: 0x10
N drive..........: 0x0F
P termination....: 0x06
N termination....: 0x06
P idle...........: 0x00
N idle...........: 0x00
A09. Configure Static Pad Control
A10. Configure ODT
A11. Configure Write Pre-/Post-amble
A12. Configure Auto Idle
A13. Release PHY control
A Series - PHY Initialization complete (PHY index: 00)
Programming controller register
Validate Shmoo parameters stored in flash ..... OK
DDR Tuning Complete
Running simple memory test ..... OK
DDR Interface Ready
Monitor len: 000DA238
Ram size: 80000000
Ram top: E0000000
TLB table from dfff0000 to dfff4000
Reserving 872k for U-Boot at: dff15000
Reserving 320k for malloc() at: dfec5000
Reserving 80 Bytes for Board Info at: dfec4fb0
Reserving 176 Bytes for Global Data at: dfec4f00

RAM Configuration:
Bank #0: 60000000
DRAM: New Stack Pointer is: dfec4ee0
Relocation Offset is: eff15000
Relocating to dff15000, new gd at dfec4f00, sp at dfec4ee0

PCIe clk val:00

PCIe clk val:00
Now running in RAM - U-Boot at: dff15000
SF: Detected MX25L6405D with page size 256 Bytes, erase size 64 KiB, total 8 MiB
In: eserial1
Out: eserial1
Err: eserial1

7 REPLIES 7
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Junos

Re: Recovery issue

‎08-16-2019 09:32 AM

Please check if the following works for you:

 

https://kb.juniper.net/InfoCenter/index?page=content&id=KB31462&cat=EX3400&actp=LIST

 

https://kb.juniper.net/InfoCenter/index?page=content&id=KB31265&cat=EX2300&actp=LIST

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Junos

Re: Recovery issue

‎08-16-2019 10:21 AM

Nope, they did not work because as I mentioned that there is no prompt or there is even no option to get the boot sequence.  You can not do anything, and it just keeps boot-up on the loop.

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Junos

Re: Recovery issue

‎08-19-2019 08:35 AM

Ehsanz,

 

If none of the recovery methods works and if you were unable to stop the boot loop, then I'm afraid the replacement of the device is our only option. 

 

I would suggest you contact the JTAC for further proceedings.



Thanks,
π00bm@$t€®.
Please, Mark My Solution Accepted if it Helped, Kudos are Appreciated too!!!
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Junos

Re: Recovery issue

‎08-19-2019 08:54 PM

Use a different 4GB/8GB USB drive and check the md5 once the junos is copied.

 

Make sure, you are using "install-media" junos version for USB recovery instead of normal version.

 

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Junos

Re: Recovery issue

‎11-07-2019 05:24 AM

bonjour EhsanZ,

just I that same problem this morning on one of my EX2300. 

Was replacement the solution you ended up with ?

Michel Lapointe

Michel Lapointe, GIRAT
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Junos

Re: Recovery issue

‎11-07-2019 05:48 AM

Wow, 

after restarting the switch 4 times by unplugging the AC and always ending up stuck on the same Err: eserial1  line, I gave up and was ready to replace the switch. 

I went for coffee, chatted with colleague and came back: the switch was up and running !!!!!

I  resetted the AC, and started a timer: the switch got stuck 5 mns at ersial1, and after that showed login as if nothing happenned

weird. 

 

RAM Configuration:
Bank #0: 60000000
DRAM:  New Stack Pointer is: dfec4ee0
Relocation Offset is: eff15000
Relocating to dff15000, new gd at dfec4f00, sp at dfec4ee0
Now running in RAM - U-Boot at: dff15000
SF: Detected MX25L6405D with page size 256 Bytes, erase size 64 KiB, total 8 MiB
In:    eserial1
Out:   eserial1
Err:   eserial1

FreeBSD/arm (cat-valdor-01) (ttyu0)

login: root
Password:
Last login: Mon Sep  9 15:29:51 on ttyu0

--- JUNOS 15.1X53-D58.3 Kernel 32-bit  JNPR-11.0-20180119.e26d166_buil
root@cat-valdor-01:RE:0%
Michel Lapointe, GIRAT
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Junos

Re: Recovery issue

‎11-11-2019 08:12 AM

solution proposed by JTAC was to reboot using a formatted usb drive.

_ Format the entire file-system and re-install Junos.
_ If that does not have any effect, RMA.

[EX] How to format install on EX2300 and EX3400
https://kb.juniper.net/InfoCenter/index?page=content&id=KB31265&cat=EX2300&actp=LIST

turns out I already had formatted usb keys with old 15.1 - it worked. After booting from usb, the switch keeps going through the full usual display during boot as before. 

not syre what caused it, but the solution seems to work. 

Michel

Michel Lapointe, GIRAT