DRAM showing 128 MB instead of 256 After IOS upgrade.

[mahesh18]

Hi all,

I had  this  ---- c2600-adventerprisek9-mz.124-25d.bin          IOS  on 2650 XM Router

Sh ver shows

how version ------------------

Cisco IOS Software, C2600 Software (C2600-ADVENTERPRISEK9-M), Version 12.4(25d), RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Wed 18-Aug-10 04:49 by prod_rel_team

ROM: System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)

2650XM uptime is 4 weeks, 2 hours, 1 minute
System returned to ROM by power-on
System restarted at 21:25:49 MST Sat Oct 8 2011
System image file is "flash:c2600-adventerprisek9-mz.124-25d.bin"

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 2650XM (MPC860P) processor (revision 3.0) with 253952K/8192K bytes of memory.  *********************256 MB  DRAM
Processor board ID JAE08116F4Y
M860 processor: part number 5, mask 2
2 FastEthernet interfaces
1 Serial interface
1 Virtual Private Network (VPN) Module
32K bytes of NVRAM.
49152K bytes of processor board System flash (Read/Write)  ***************************************************48 MB  FLASH

**********************************************************************************************************************************************************

i did upgrade the IOS  to

2650XM#              sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-ADVIPSERVICESK9-M), Version 12.3(26), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by cisco Systems, Inc.
Compiled Mon 17-Mar-08 15:23 by dchih

ROM: System Bootstrap, Version 12.2(8r) [cmong 8r], RELEASE SOFTWARE (fc1)

2650XM uptime is 2 hours, 53 minutes
System returned to ROM by reload at 18:56:37 MST Sun Nov 6 2011
System restarted at 19:04:16 MST Sun Nov 6 2011
System image file is "flash:c2600-advipservicesk9-mz.123-26.bin"

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 2650XM (MPC860P) processor (revision 0x300) with 126976K/4096K bytes of memory.    **********************************128 MB DRAM
Processor board ID JAE08116F4Y (4085259298)
M860 processor: part number 5, mask 2
Bridging software.
X.25 software, Version 3.0.0.
2 FastEthernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
1 Virtual Private Network (VPN) Module(s)
32K bytes of non-volatile configuration memory.
49152K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

I did this command  to check memory

2650XM#   dir  /all
Directory of flash:/

    1  -rw-    20146776                    <no date>  c2600-advipservicesk9-mz.123-26.bin

50331644 bytes total (30184804 bytes free)

Is this ok that Router is showing less DRAM  after IOS  upgrade?

Thanks

mahesh

[nkarpysh]

Hi,

Looks strange,

Can you please also do:

"show proc mem" and "show mem sum"

Nik

[mahesh18]

Hi,

Thanks for the reply

Here is info

2650XM#sh memory summary
                Head    Total(b)         Used(b)        Free(b)      Lowest(b)    Largest(b)
Processor   8329DE40              78082148    11712864    66369284    65419532     63750436
      I/O       7C00000                4194304       2718672     1475632     1447440     1447388

2650XM#sh proc memory

Total: 78082148, Used: 11723752, Free: 66358396

PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process

   0   0    1221972      10892    8783720          0          0 *Init*

   0   0      13280     239780      13280          0          0 *Sched*

   0   0   26618740   14842052      74888     304220          0 *Dead*

   1   0          0          0       6892          0          0 Chunk Manager

   2   0        188        188       3892          0          0 Load Meter

   4  66      45232      44032      14108          0          0 Virtual Exec

   5   0      65580          0      90472          0          0 EDDRI_MAIN

   6   0          0          0       6892          0          0 Check heaps

   7   0      62732      29032      22936      19236      35008 Pool Manager

Thanks

MAhesh

[nkarpysh · Accepted solution]

Hi Mahesh,

I was able to check that 12.3 main releases do not support 256 MB on router DRAM - thus you see only 128 (maximu supported by IOS).

Support fo that started on 12.3(11)T and 12.4T & 12.5M.

Check this for more info:

http://www.cisco.com/en/US/customer/prod/collateral/routers/ps259/prod_qas0900aecd800f71dd.html

http://www.cisco.com/en/US/prod/collateral/routers/ps259/prod_bulletin0900aecd801e3d53.html

Following command will show how many DRAm slots used and it's capacity.

show c2600

Show ver is showing memory based on IOS capability.

You can rate if was helpfull.

Nik

[glen.grant]

Why did you have to downgrade it ?

[mahesh18]

Hi Glen.

Thanks for reply.

Only reason i downgrade was that 12.3 supports MPLS.

I was trying to config MPLS  on my LAB  routers.

As version 12.4 does not support MPLS.

Thanks

MAhesh

[mahesh18]

Hi,

Thanks for great info.

Is those versions support MPLS ?

Mahesh

[mahesh18]

Hi,

Many thanks for great info.

One last thing as now Router is only using 128MB  so remaining DRAM is not utilised right?

will only using 128 MB  DRAM  slow down the speed of router?

Thanks

mahesh

[Reza Sharifi · Accepted solution]

Hi mahesh,

for this router 128Mb is good enough. As long as the image supports it, you can run most of the routing protocols and tun on other features.

HTH

Reza

[mahesh18]

Thanks Reza  one again

[Reza Sharifi]

Hi Mahesh,

Lets try this:

delete the existing image and load this one (below again)

This requires only 128Mb memory and 32Mb Flash so you should be fine

ADVANCED ENTERPRISE SERVICES

c2600-adventerprisek9-mz.124-25d.bin

Release Date: 24/AUG/2010

Size: 29266.05 KB (29968428 bytes)

Minimum Memory:                                                                                                                                                                      DRAM:128MB                                                                                                                                                                                                                                                     Flash:32MB