Cisco 2951 ios 15.4(2)T 4gb RAM

[aldrabkin]

Hello!

I'm looking for help with strange problem.

We have buy Cisco 2951 router + MEM-2951-512U4GB bundle and we installed 2x2048 DIMM modules.

show platform command show me:

DIMM0 SPD data :
Size of dimm                 = 2048 Megabytes

...

DIMM1 SPD data :
Size of dimm                 = 2048 Megabytes

Ok!

But show version output show only 2GB:

Cisco CISCO2951/K9 (revision 1.1) with 1835264K/261888K bytes of memory.

I'm very confused. Appreciate for any advice!

[LJ Gabrillo]

Try doing "show process memory" your RAM status is displayed there, the total, used, vice versa

[aldrabkin]

Hello, Isgabrillo ! Thanks for reply !

Here is the "show process memory" output:

Processor Pool Total: 1626007632   Used:   86894012   Free: 1539113620
I/O Pool Total:               268173312    Used:   19411232   Free:  248762080

I think the total amount of memory is: Processor Pool Total + I/O Pool Total = Total Memory (1626007632+268173312=1894180944 approx 2GB) Am i right ?

Also, the "show memory summary" output:

                    Head               Total(b)        Used(b)     Free(b)              Lowest(b)        Largest(b)
Processor   1359D7B0   1626007632    86899016   1539108616   468002636   1016861384
I/O               30040000      268173312    19411464       48761848   248677540     246493788

[LJ Gabrillo]

It's weird, your logs, as you have said the RAM has been detected, but on the pool it is not.
Can you verify again and make sure there are no errors on the router?

also, can you check your logs (show logging) for any errors

also, try the following commands, these commands verify hardware status:

#show platform
#show diag

also verify in those commands that the module is okay

[aldrabkin]

Ok, thx! I'll do it later.

But, maybe it's ok...I find some information about router 2951: Maximum memory=2GB

http://www.cisco.com/c/en/us/td/docs/routers/access/2900/hardware/installation/guide/Hardware_Installation_Guide/Overview.html#pgfId-1071964

[LJ Gabrillo]

Oh yeah, can you do a #show version and #show inventory, we may need to check the hardware capabilities considering your device may not support additional RAMs xD

Also, do not clip the output

[aldrabkin]

show version:

Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.4(2)T, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Wed 26-Mar-14 14:43 by prod_rel_team

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

BC1-RT-DATA-01 uptime is 1 week, 2 days, 31 minutes
System returned to ROM by power-on
System restarted at 10:34:26 MSK Tue Nov 18 2014
System image file is "flash0:/c2951-universalk9-mz.SPA.154-2.T.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:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco CISCO2951/K9 (revision 1.1) with 1835264K/261888K bytes of memory.
Processor board ID FCZ183960KT
2 FastEthernet interfaces
3 Gigabit Ethernet interfaces
1 terminal line
1 Virtual Private Network (VPN) Module
DRAM configuration is 72 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
-------------------------------------------------
*1        CISCO2951/K9          FCZ183960KT


Technology Package License Information for Module:'c2951'

------------------------------------------------------------------------
Technology    Technology-package                  Technology-package
              Current              Type           Next reboot
------------------------------------------------------------------------
ipbase        ipbasek9             Permanent      ipbasek9
security      securityk9           EvalRightToUse securityk9
uc            None                 None           None
data          None                 None           None
NtwkEss       None                 None           None
CollabPro     None                 None           None

Configuration register is 0x2102

[LJ Gabrillo · Accepted solution]

Thanks for the Logs and based on your PID and model type, it looks like you your additional RAM is a bummer, it can't be integrated

Based on this link: CLICK HERE you can't add anymore RAMs

I have attached a screenshot of the page as well indicating the 2GB max 
You better remove that RAM so it can be used to upgrade others :D


 

Rate or Mark as Correct helpful post :)
 

[aldrabkin]

sh inventory
NAME: "CISCO2951/K9", DESCR: "CISCO2951/K9 chassis, Hw Serial#: FCZ183960KT, Hw Revision: 1.1"
PID: CISCO2951/K9      , VID: V06 , SN: FCZ183960KT

NAME: "Two-Port Fast Ethernet High Speed WAN Interface Card on Slot 0 SubSlot 0", DESCR: "Two-Port Fast Ethernet High Speed WAN Interface Card"
PID: HWIC-2FE          , VID: V02 , SN: FOC18367C98

NAME: "C2921/C2951 AC Power Supply", DESCR: "C2921/C2951 AC Power Supply"
PID: PWR-2921-51-AC    , VID: V03 , SN: DCA1812K08T

[aldrabkin]

Hi, Isgabrillo ! Thank you very much for help !

[LJ Gabrillo]

No Problem! ^_^