Problem With 2950 swith at startup

[pedram rabeti]

Hi ,

I have a problem with Switch Catalyst 2950 T . At startup I see following error and SYST light blink green .

I did the update IOS  but did not change . 

Please help me to solve the problem.

Thank you

Done initializing flashfs.

POST: System Board Test : Passed

POST: Ethernet Controller Test : Passed

ASIC Initialization Passed

SCHAN_HDR <CPU=0 COS=0 ECODE=0 EBIT=0

LEN=0 SRC=5 DST=0 OP=7=READ_MEM_CMD>

SCHAN_DW[0]=0x1C014000

SCHAN_DW[1]=0x03000019

SCHAN_DW[2]=0x80CBA418

SCHAN_DW[3]=0x00000018

SCHAN_DW[4]=0x802B9238

SCHAN_DW[5]=0x802B9224

SCHAN_DW[6]=0x00000010

%PLATFORM_HW-3-MEM_READ_FAILURE:

Read memory failed for memory VTABLE at index 1

SCHAN_HDR <CPU=0 COS=0 ECODE=0 EBIT=0

LEN=0 SRC=5 DST=0 OP=7=READ_MEM_CMD>

SCHAN_DW[0]=0x1C014000

SCHAN_DW[1]=0x05000001

SCHAN_DW[2]=0x80CBA398

SCHAN_DW[3]=0x80CBA470

SCHAN_DW[4]=0x00000039

POST: Loop back Test Failed on FastEthernet0/1. State:Disabled

[cadet alain · Accepted solution]

Hi,

This is explained here and it states you should contact TAC if this reoccurs:

http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_9_ea1/system/messages/msg_desc.html#wp1048203

Regards

Alain

Don't forget to rate helpful posts.

[pedram rabeti]

Hi ,

Thank you for  reply.

According to this description, I have to replace the device.

Best Regard

[Ivan Shirshin · Accepted solution]

Hi,

This is HW failure. Either memory is corrupted or switch has HW failure and cannot read it correctly. You should replace it.

Kind Regards,
Ivan Shirshin

**Please grade this post if you find it useful.

[Leo Laohoo]

%PLATFORM_HW-3-MEM_READ_FAILURE:

Pop the lid, clean the connecting tips of the memory.  Put it back in and pray it'll work.

[pedram rabeti]

Hi ,

Thank you for reply .

Where is a memory chip on the motherboard ? I Cant find it  !

Reagard

[Leo Laohoo]

Ooops.  2950.  No.  No memory.

The memory is wielded to the mother board.   There's another method ... not "fully" recommended (but I've done it before).

Bang it a few times on the flat side.

NOTE:  I AM serious. 

[Peter Paluch]

Leo,

But actually your idea about cleaning the tips is sound. Even if there are only chips soldered on the motherboard, there is a (admittedly remote) chance that their pins, if accessible, have become covered with dust and have thus developed some kind of coupling, impairing their function. Dusting off the pins with a brush and compressed air could do the trick...

Best regards,

Peter