Solved: Router should show the Memory´s DRAM size...

IngGerardo013 · ‎01-21-2014

Hello folks,

We have a Router ISR2 2921 with his 512MB on DRAM , last week, we inserted a memory of 1GB of DRAM that we bought to have 1.5 on DRAM, problem is that we can not see if in fact this router has detected the new DRAM. Checking literature we found the next:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/requirements/guide/cme91spc.html

It seems that Router only supports up 1GB, first doubt is,

It is possible diable (through a command ) 512DRAM memory card with out remove the card?

Document speaks about recomended DRAM, it is posible to have 1.5GB of DRAM for this model?

Thanks a lot for your attention, have a great day.

Leo Laohoo · ‎01-21-2014

Both DRAMs must be of the same size. You can't have 512 mb and another 1 Gb. You need both to be either 512mb or 1 Gb.

Think of it as the old-style/first generation of Pentium computer memory requirements. Those ECC chips of those days are very similar to the DRAM chips being used today.

FYI: The reason is because the chips are manufactured for Cisco at BREAK-EVEN COST to the manufacturer. Translation: Cheap. Dirt friggin cheap.

View solution in original post

devils_advocate · ‎01-21-2014

Hi

The Data Sheet for the 2900 series suggests that the 2921 supports 2GB of RAM maximum:

http://www.cisco.com/en/US/prod/collateral/routers/ps10537/data_sheet_c78_553896.html

Can you post a #show version?

Thanks

Reza Sharifi · ‎01-21-2014

Hi,

The max that is supported is 2Gig, but not sure if you can have the existing 512 and add another 1Gig. To test, you may take out the existing 512 and see if the router recognizes the 1Gig module. If it does, than if you add a second module, you will have a total of 2Gig.

HTH

IngGerardo013 · ‎01-21-2014

Hi,

This is the show version, problem is that we dont have support window to extract the 512 memory:

show version ------------------

Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(4)M4, RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Compiled Thu 20-Jun-13 13:06 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M16, RELEASE SOFTWARE (fc1)

CME2921-NISSIN uptime is 2 days, 1 hour, 55 minutes

System returned to ROM by power-on

System restarted at 15:26:03 -6 Wed Jan 15 2014

System image file is "flash:c2900-universalk9-mz.SPA.152-4.M4.bin"

Last reload type: Normal Reload

Last reload reason: power-on

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

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If you require further assistance please contact us by sending email to

export@cisco.com.

Cisco CISCO2921/K9 (revision 1.0) with 475136K/49152K bytes of memory.

4 Gigabit Ethernet interfaces

2 terminal lines

1 Channelized E1/PRI port

4 Voice FXS interfaces

1 Internal Services Module (ISM) with Services Ready Engine (SRE)

Cisco Unity Express 8.5.1 in slot/sub-slot 0/0

DRAM configuration is 64 bits wide with parity enabled.

255K bytes of non-volatile configuration memory.

250880K bytes of ATA System CompactFlash 0 (Read/Write)

License Info:

License UDI:

-------------------------------------------------

Device# PID SN

-------------------------------------------------

*0 CISCO2921/K9 F1217W3AL80

Technology Package License Information for Module:'c2900'

-----------------------------------------------------------------

Technology Technology-package Technology-package

Current Type Next reboot

------------------------------------------------------------------

ipbase ipbasek9 Permanent ipbasek9

security None None None

uc uck9 Permanent uck9

data None None None

Configuration register is 0x2102

Reza Sharifi · ‎01-21-2014

Hi,

Unfortunately, there is no other way to do this without opening the router. The added memory is not functioning anyway.

HTH

IngGerardo013 · ‎01-21-2014

Ok, we try to open a support window, in case of malfunctioning, is there any command to see is the memories are Ok?.. Thanks a lot

This is the card: MEM-2900-1GB=

1 GB DRAM (1 DIMM) for Cisco 2901, 2911, 2921 ISR, Spare

Reza Sharifi · ‎01-21-2014

Here is what I would do.

Turn off the router and take out the 512 memory and see if sh ver detects it.

If yes, you are good to go.

If it doesn't, than the router may not support the memory from the manufacture you purchased it from.

Did you buy the memory from a Cisco reseller and/or a 3rd party vendor that is approved by Cisco?

HTH

IngGerardo013 · ‎01-21-2014

Memory was purchased from a Cisco Reseller, and this is the show version before insert 1GB DRAM memory:

CME2921-NISSIN(config)#DO SH VERSION

Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(4)M4, RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Compiled Thu 20-Jun-13 13:06 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M16, RELEASE SOFTWARE (fc1)

CME2921-NISSIN uptime is 8 minutes

System returned to ROM by power-on

System image file is "flash0:c2900-universalk9-mz.SPA.152-4.M4.bin"