Flash memory upgrade!

[paltel]

Hi,

Is there is any restriction about Flash memory upgrade for Cisco 3660 and 3640 routers, i have 2 3660 and 2 3640(with 32 MB SIMM flash memory for each, except for the last one 3640 with 8 MB Flash memory) and i want to buy PCMCIA Flash memory 32MB for each one. Is there is any restriction about the max Flash memory in MB that to upgrade, and i think that PCMCIA flash memory size must be small than or equal the SIMM flash memory. right?

[Georg Pauwen]

Hello,

there is no relation or dependency between the flash SIMM size and the PCMCIA flash size. You can install a maximum of 2x16=32MB of external PCMCIA flash.

Is that the information you are looking for ?

Regards,

GP

[paltel]

Hi,

Yes, it means that i can install up to 64MB Flash memory for both Cisco 3660 and Cisco 3640 routers. i.e i need to buy 2 PCMCIA flash memory 16 MB for each router. right? Or i can get 2 PCMCIA flash memory with 32MB for each router to have 96 MB flash memory(32 SIMM plus 2 external PCMCIA with 32 MB).

Thanks

[Georg Pauwen]

Hello,

there is a slight difference between the 3640 and the 3660 regarding the maximum flash size: the 3640 supports a maximum of 32MB SIMM flash, while the 3660 supports 64MB. So, on the 3640, you can achieve a maximum of 64MB, while on the 3660, that maximum is 96MB.

You might want to check the data sheets below, they list the memory configurations possible on the various platforms:

Cisco 3600 Series Multifunction Platforms (3620 and 3640/3640A)

Data Sheet

http://www.cisco.com/en/US/partner/products/hw/routers/ps274/products_data_sheet09186a0080091f6f.html

Cisco 3660 Multiservice Platform

Data Sheet

http://www.cisco.com/en/US/partner/products/hw/routers/ps274/products_data_sheet09186a0080091ba4.html

HTH,

GP

[tekha]

I usely try Kingston's website, they seem to have better knowledge on memory and flash requirements on Cisco product's, then Cisco.

http://www.ec.kingston.com/ecom/configurator/mfrmod.asp

For the 3640:

http://www.ec.kingston.com/ecom/configurator/modelsinfo.asp?SysID=4413&mfr=Cisco&model=3640+Series&Sys=4413-Cisco-3640+Series&distributor=0&submit1=Search

For the 3660:

http://www.ec.kingston.com/ecom/configurator/modelsinfo.asp?SysID=8551&mfr=Cisco&model=3660+Series&Sys=8551-Cisco-3660+Series&distributor=0&submit1=Search

[paltel]

Hi,

Thanks alot.. I would like to ask about the flash memory SIMM, both Cisco 3640 and 3660 contain 2 slots Flash memory. for example, if you have 32 MB SIMM flash memory how can we determine if this 32 MB occupied one slot(32 MB SIMM flash memory) or 2*16 ?

Another thing, can we use the replaced 32 or 16 MB DRAM from 3660 to 3640? i think no because two different access time and pin numbers. just to ensure that.

Thanks again

[Georg Pauwen]

Hello,

for the 3640, there is a procedure to determine which slots are occupied, check this link:

How to Determine the SIMM Configuration of a Cisco 3620 or 3640 Series Router

http://www.cisco.com/en/US/products/hw/routers/ps274/products_tech_note09186a0080104555.shtml

Not sure if there is something similar for the 3660...

Regarding the memory: I think the 32MB SIMMs for the 3660 are not compatible with the 3640, but the 16MB SIMMs are. Check this link for the part numbers:

Cisco 3000 Series Router Memory

http://www.memoryx.net/3000router.html

Regards,

GP

[paltel]

Hi Mr. gpauwen ,

Thank you for your immediate reply. I know that document which give you how many memory exist at each bank for the memory. I want to ask about Flash memory. For both 3640 and 3660 each contain 2 SIMM flash memory, i want to test this 2 slots.

Thank you

[paltel]

Hi,

Cisco routers 3640 and 3660 have 2 sots for Flash memory.Can we determine the size of SIMM flash memory exist at each slot? for example, i f we have 32 MB flash memory (SIMM). i need to know is this 32MB at one slot or at the two slots??

Thank you

[tekha]

On my 2650XM, I know that I have 48 MB Flash memory.

Try issuing "sh flash chips"

This is what I get on my router.

49152K bytes of processor board System flash (Read/Write)

Chip Bank Code Size Name

1 1 8917 8192KB INTEL 28F640J3

2 1 8917 8192KB INTEL 28F640J3

1 2 8918 16384KB INTEL 28F128J3

2 2 8918 16384KB INTEL 28F128J3

As you can see bank1 (onboard) has 2 chips of 8MB each, and bank2 has 2 chips of each 16MB. For a total of 48MB.

Is this what you wan't to know.

[paltel]

I issue this command before at my Cisco 3660 router and this is what i get:

PALTEL#sh flash: chips

32768K bytes of processor board System flash (Read/Write)

Chip Bank Code Size Name

1 1 01AD 2048KB AMD 29F016

2 1 01AD 2048KB AMD 29F016

3 1 01AD 2048KB AMD 29F016

4 1 01AD 2048KB AMD 29F016

1 2 01AD 2048KB AMD 29F016

2 2 01AD 2048KB AMD 29F016

3 2 01AD 2048KB AMD 29F016

4 2 01AD 2048KB AMD 29F016

1 3 01AD 2048KB AMD 29F016

2 3 01AD 2048KB AMD 29F016

3 3 01AD 2048KB AMD 29F016

4 3 01AD 2048KB AMD 29F016

1 4 01AD 2048KB AMD 29F016

2 4 01AD 2048KB AMD 29F016

3 4 01AD 2048KB AMD 29F016

4 4 01AD 2048KB AMD 29F016

You see,i can't understand this info. 4 banks!!!

[tekha]

Hmm, you wright, this is confusing.

What does it say when doing "sh flash all"?

My 2600XM says "bank-size 16384K + 32768K".

2650XM-Router#sh flas all

Partition Size Used Free Bank-Size State Copy Mode

1 49151K 37849K 11302K 16384K Read/Write Direct

+ 32768K

How may banks do you have on the board, and how many PCMCIA slots do you have, I'm guessing 2 of each, correct?

[paltel]

Yes, correct!

[tekha]

And what did you get with a "sh flash all"?

[paltel]

PALTEL#sh flash: all

Partition Size Used Free Bank-Size State Copy Mode

1 32767K 21068K 11699K 8192K Read/Write Direct

System flash directory:

File Length Name/status

addr fcksum ccksum

1 21573644 c3660-js-mz.123-10a.bin

0x40 0xD93C 0xD93C

[21573708 bytes used, 11980720 available, 33554428 total]

32768K bytes of processor board System flash (Read/Write)

Chip Bank Code Size Name

1 1 01AD 2048KB AMD 29F016

2 1 01AD 2048KB AMD 29F016

3 1 01AD 2048KB AMD 29F016

4 1 01AD 2048KB AMD 29F016

1 2 01AD 2048KB AMD 29F016

2 2 01AD 2048KB AMD 29F016

3 2 01AD 2048KB AMD 29F016

4 2 01AD 2048KB AMD 29F016

1 3 01AD 2048KB AMD 29F016

2 3 01AD 2048KB AMD 29F016

3 3 01AD 2048KB AMD 29F016

4 3 01AD 2048KB AMD 29F016

1 4 01AD 2048KB AMD 29F016

2 4 01AD 2048KB AMD 29F016

3 4 01AD 2048KB AMD 29F016

4 4 01AD 2048KB AMD 29F016