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New Member

Problem With 2950 swith at startup

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

2 ACCEPTED SOLUTIONS

Accepted Solutions
Purple

Problem With 2950 swith at startup

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

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Don't forget to rate helpful posts.
Cisco Employee

Problem With 2950 swith at startup

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.

Kind Regards, Ivan Shirshin **Please grade this post if you find it useful.
7 REPLIES
Purple

Problem With 2950 swith at startup

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.

Don't forget to rate helpful posts.
New Member

Problem With 2950 swith at startup

Hi ,

Thank you for  reply.

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

Best Regard

Cisco Employee

Problem With 2950 swith at startup

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.

Kind Regards, Ivan Shirshin **Please grade this post if you find it useful.
Hall of Fame Super Gold

Problem With 2950 swith at startup

%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.

New Member

Re: Problem With 2950 swith at startup

Hi ,

Thank you for reply .

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

Reagard

Hall of Fame Super Gold

Re: Problem With 2950 swith at startup

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. 

Cisco Employee

Re: Problem With 2950 swith at startup

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

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