Hello,

This looks to me like the switch can't complete the boot process. Have you tried flashing the firmware? In the boot menu, what options do you see? The manual indicates that there should be a backup image to boot to. This may help test. 

The last message on the console indicates the switch OS is booted up fine.

Did you try hitting [Enter] to activate the console?

is there a way to upgrade the firmware without web/console access ? The switch is on 5.0.1.3 and i downloaded : PC7000_M6348v5.1.16.1.stk

Did a try to copy it to a usb pen (fat32) but the switch don't make a auto-upgrade. Do i have to use the 2nd boot menu ?

Is there no "secret door" like the 30 in the boot menu ?

jean

Hello,

thanks for your answers. I did a try to change the serial/usb adapter, from a Ugreen to a Atem.

Now the switch reload the boot process :

Boot Menu 5.0.1.3
CPU Card ID: 0x508548
/DskVol// - disk check in progress ...
/DskVol// - Volume is OK

volume descriptor ptr (pVolDesc): 0x814ee50
XBD device block I/O handle: 0x10001
auto disk check on mount: DOS_CHK_REPAIR |DOS_CHK_VERB_2
volume write mode: copyback (DOS_WRITE)
volume options:
max # of simultaneously open files: 52
file descriptors in use: 0
# of different files in use: 0
# of descriptors for deleted files: 0
# of obsolete descriptors: 0

current volume configuration:
- volume label: NO LABEL ; (in boot sector: )
- volume Id: 0xbb
- total number of sectors: 124,408
- bytes per sector: 512
- # of sectors per cluster: 4
- # of reserved sectors: 1
- FAT entry size: FAT16
- # of sectors per FAT copy: 122
- # of FAT table copies: 2
- # of hidden sectors: 8
- first cluster is in sector # 260
- Update last access date for open-read-close = FALSE

Boot Menu 5.0.1.3
Select an option. If no selection in 10 seconds then
operational code will start.

1 - Start operational code.
2 - Start Boot Menu.
Select (1, 2):

Operational Code Date: Sat Nov 19 22:16:21 2011

Uncompressing.....

Bulk Class Driver Successfully Initialized

Adding 0 symbols for standalone.
CFI Probe: Found 2x16 devices in x16 mode

volume descriptor ptr (pVolDesc): 0x53eb310
XBD device block I/O handle: 0x10001
auto disk check on mount: DOS_CHK_REPAIR |DOS_CHK_VERB_2
volume write mode: copyback (DOS_WRITE)
volume options:
max # of simultaneously open files: 52
file descriptors in use: 0
# of different files in use: 0
# of descriptors for deleted files: 0
# of obsolete descriptors: 0

current volume configuration:
- volume label: NO LABEL ; (in boot sector: )
- volume Id: 0xbb
- total number of sectors: 124,408
- bytes per sector: 512
- # of sectors per cluster: 4
- # of reserved sectors: 1
- FAT entry size: FAT16
- # of sectors per FAT copy: 122
- # of FAT table copies: 2
- # of hidden sectors: 8
- first cluster is in sector # 260
- Update last access date for open-read-close = FALSE

Found Bulk Device with 1 Logical Units at node 2

PCI unit 0: Dev 0xb636, Rev 0x11, Chip BCM56636_B0, Driver BCM56634_B0
SOC unit 0 attached to PCI device BCM56636_B0
soc_reset_bcm56634_a0: TCAM PLL not locked.
Exception: taskID = 3ffffd10, vectNum = 300, pEsf = 0x3fffa190
saving crash record in crashdump.2

data storage
Exception current instruction address: 0x00485564
Machine Status Register: 0x00029230
Data Exception Address Register: 0x480463e5
Condition Register: 0x88000442
Exception Syndrome Register: 0x00000000
Task: 0x3ffffd10 "tRootTask"

NAME ENTRY TID PRI STATUS PC SP ERRNO DELAY
---------- ------------ -------- --- ---------- -------- -------- ------- -----
tRootTask usrRoot 3ffffd10 0 READY 0x485564 3ffff7e0 380003 0

stack: base 0x3ffffd10 end 0x3fffa280 size 23184 high 8000 margin 15184
options: 0x7

vector: 0x300

Stack Trace:
0x485564: bcm_esw_port_probe (0x48542c) + 0x138

offset (0x3fdd401c) between stack frames too large (> 0x2000), quitting trace..
r0 = 48554c sp = 3ffff7e0 r02 = 3aecc10 r03 = fffffff0
r04 = 1 r05 = 0 r06 = 0 r07 = 0
r08 = 180 r09 = 3ffbdfc r10 = 57c3a94 r11 = 480463cd
r12 = 28000422 r13 = 3f29460 r14 = 0 r15 = 0
r16 = 0 r17 = 0 r18 = 0 r19 = 42b0000
r20 = ff0000 r21 = 0 r22 = 4000000 r23 = fffffff0
r24 = 0 r25 = 78000003 r26 = 3f00f940 r27 = 3ffff864
r28 = 410000 r29 = 36 r30 = 630000 r31 = 1
msr = 29230 lr = 48554c ctr = 0 pc = 485564
cr = 88000442 xer = 0

Boot Menu 5.0.1.3
CPU Card ID: 0x508548
/DskVol// - disk check in progress ...
/DskVol// - Volume is OK

volume descriptor ptr (pVolDesc): 0x814ee50
XBD device block I/O handle: 0x10001
auto disk check on mount: DOS_CHK_REPAIR |DOS_CHK_VERB_2
volume write mode: copyback (DOS_WRITE)
volume options:
max # of simultaneously open files: 52
file descriptors in use: 0
# of different files in use: 0
# of descriptors for deleted files: 0
# of obsolete descriptors: 0

current volume configuration:
- volume label: NO LABEL ; (in boot sector: )
- volume Id: 0xbb
- total number of sectors: 124,408
- bytes per sector: 512
- # of sectors per cluster: 4
- # of reserved sectors: 1
- FAT entry size: FAT16
- # of sectors per FAT copy: 122
- # of FAT table copies: 2
- # of hidden sectors: 8
- first cluster is in sector # 260
- Update last access date for open-read-close = FALSE

Boot Menu 5.0.1.3
Select an option. If no selection in 10 seconds then
operational code will start.

1 - Start operational code.
2 - Start Boot Menu.
Select (1, 2):

Operational Code Date: Sat Nov 19 22:16:21 2011

Uncompressing.....

Bulk Class Driver Successfully Initialized

Adding 0 symbols for standalone.
CFI Probe: Found 2x16 devices in x16 mode

volume descriptor ptr (pVolDesc): 0x53eb310
XBD device block I/O handle: 0x10001
auto disk check on mount: DOS_CHK_REPAIR |DOS_CHK_VERB_2
volume write mode: copyback (DOS_WRITE)
volume options:
max # of simultaneously open files: 52
file descriptors in use: 0
# of different files in use: 0
# of descriptors for deleted files: 0
# of obsolete descriptors: 0

current volume configuration:
- volume label: NO LABEL ; (in boot sector: )
- volume Id: 0xbb
- total number of sectors: 124,408
- bytes per sector: 512
- # of sectors per cluster: 4
- # of reserved sectors: 1
- FAT entry size: FAT16
- # of sectors per FAT copy: 122
- # of FAT table copies: 2
- # of hidden sectors: 8
- first cluster is in sector # 260
- Update last access date for open-read-close = FALSE

Found Bulk Device with 1 Logical Units at node 2
PCI unit 0: Dev 0xb636, Rev 0x11, Chip BCM56636_B0, Driver BCM56634_B0
SOC unit 0 attached to PCI device BCM56636_B0
soc_reset_bcm56634_a0: TCAM PLL not locked.
Adding BCM transport pointers
Configuring CPUTRANS TX
Configuring CPUTRANS RX
Instantiating /download as rawFs, device = 0x50001
Formatting /download for DOSFS
Instantiating /download as rawFs, device = 0x50001
Formatting...OK.

<186> DEC 22 13:45:00 0.0.0.0-1 General[1073741072]: bootos.c(220) 1 %% Event(0xaaaaaaaa)

then it stay there. Hitting Enter don't change anything ...

i found a page, explaining how to upgrade the FW using the serial cable : https://vnetwise.wordpress.com/2012/05/13/recovering-a-dell-powerconnect-6248-from-bad-flash/

it seems that it worked, so i can't imagine that the switch have a problem .... Now i have this at boot (letting it boot) :

Boot Menu 5.1.16.1
CPU Card ID: 0x508548
/DskVol// - disk check in progress ...
/DskVol// - Volume is OK

volume descriptor ptr (pVolDesc): 0x814f370
XBD device block I/O handle: 0x10001
auto disk check on mount: DOS_CHK_REPAIR |DOS_CHK_VERB_2
volume write mode: copyback (DOS_WRITE)
volume options:
max # of simultaneously open files: 52
file descriptors in use: 0
# of different files in use: 0
# of descriptors for deleted files: 0
# of obsolete descriptors: 0

current volume configuration:
- volume label: NO LABEL ; (in boot sector: )
- volume Id: 0xbb
- total number of sectors: 124,408
- bytes per sector: 512
- # of sectors per cluster: 4
- # of reserved sectors: 1
- FAT entry size: FAT16
- # of sectors per FAT copy: 122
- # of FAT table copies: 2
- # of hidden sectors: 8
- first cluster is in sector # 260
- Update last access date for open-read-close = FALSE

Boot Menu 5.1.16.1
Select an option. If no selection in 10 seconds then
operational code will start.

1 - Start operational code.
2 - Start Boot Menu.
Select (1, 2):

Operational Code Date: Thu Jan 9 14:31:31 2020

Uncompressing.....

Bulk Class Driver Successfully Initialized

Adding 0 symbols for standalone.

volume descriptor ptr (pVolDesc): 0x53b8090
XBD device block I/O handle: 0x10001
auto disk check on mount: DOS_CHK_REPAIR |DOS_CHK_VERB_2
volume write mode: copyback (DOS_WRITE)
volume options:
max # of simultaneously open files: 52
file descriptors in use: 0
# of different files in use: 0
# of descriptors for deleted files: 0
# of obsolete descriptors: 0

current volume configuration:
- volume label: NO LABEL ; (in boot sector: )
- volume Id: 0xbb
- total number of sectors: 124,408
- bytes per sector: 512
- # of sectors per cluster: 4
- # of reserved sectors: 1
- FAT entry size: FAT16
- # of sectors per FAT copy: 122
- # of FAT table copies: 2
- # of hidden sectors: 8
- first cluster is in sector # 260
- Update last access date for open-read-close = FALSE

PCI unit 0: Dev 0xb636, Rev 0x11, Chip BCM56636_B0, Driver BCM56634_B0
SOC unit 0 attached to PCI device BCM56636_B0
soc_reset_bcm56634_a0: TCAM PLL not locked.
Adding BCM transport pointers
Configuring CPUTRANS TX
Configuring CPUTRANS RX
Instantiating /download as rawFs, device = 0x20001
Formatting /download for DOSFS
Instantiating /download as rawFs, device = 0x20001
Formatting...OK.

<186> Dec 22 15:30:18 0.0.0.0-1 General[1073741072]: bootos.c(225) 1 %% Event(0xaaaaaaaa)

and i still can't make the command prompt display ...

Did a try with the 2 Enter, i can't type something (like enable, console, ...) nothing react ...

Any idea ?

Jean

Hi Jean,

unfortunately this message is indicating a hardware problem:

soc_reset_bcm56634_a0: TCAM PLL not locked

Please check the service tag of the switch for warranty and contact Dell technical support.

Tim