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Saran Komgris


%SYSTEM_CONTROLLER-3-COR_MEM_ERR: Correctable DRAM memory error. Count 668774, log 810A1805

%SYSTEM_CONTROLLER-3-MORE_COR_ERR:  255 correctable DRAM memory errors in previous hour

Does this have any impact or effect to the service? Can this define as a cosmetic or not?

Thank you.

13 Replies 13

VIP Mentor VIP Mentor
VIP Mentor


 - FYI :

   As long as the errors remain correctable , there is no impact, but it may be indicative of a failing memory component(s) on the supervisor , so the supervisor may need replacement in the end. You can also connect to the 6509 with , at the top left press or run System Diagnostics.



VIP Guru VIP Guru
VIP Guru

Do have dual sup card in the chasis or only 1, try reseating and test it.


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Unfortunately, I have only 1 sup in the chassis (slot 5).

is this effecting any performance issue or you worried about logs.

if i were you, i take maintenance window , reseat the DIMM and plug back the module and switch and test it.

Sup720 EOL Long back, so understand the risk before you make any complicated troubleshooting.


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I worried about the logs. Also if I down the supervisor, I'm afraid that there is a risk that it cannot bootup.


   - In a business (critical) context  , you need to have replacement equipment available if eol and or end-of-support equipment is failing or starts to give you warnings!


In this case any way business risk running every day, suggest your managment to buy a refurbished  Sup 720 ( available in the market for cheaper price ) and do the maintenance.



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Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend

Post the complete output to the command "sh version".

NOTE:  Remove the hostname.  Leave everything else. 

#show version
Cisco IOS Software, s72033_rp Software (s72033_rp-IPSERVICESK9_WAN-M), Version 12.2(33)SXH2a, RELEASE SOFTWARE (fc2)
Technical Support:
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Fri 25-Apr-08 09:52 by prod_rel_team

ROM: System Bootstrap, Version 12.2(17r)SX5, RELEASE SOFTWARE (fc1)

Hostname uptime is 12 years, 37 weeks, 1 day, 2 hours, 20 minutes
Uptime for this control processor is 12 years, 37 weeks, 1 day, 4 hours, 45 minutes
Time since Hostname switched to active is 12 years, 37 weeks, 1 day, 4 hours, 53 minutes
System returned to ROM by power cycle at 05:45:20 PDT Sat Aug 30 2008 (SP by power on)
System restarted at 18:53:43 BKK Thu Oct 29 2009
System image file is "bootdisk:/s72033-ipservicesk9_wan-mz.122-33.SXH2a.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:

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

cisco WS-C6509-E (R7000) processor (revision 1.4) with 458720K/65536K bytes of memory.
Processor board ID SMC1231009T
SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
Last reset from s/w reset
183 Virtual Ethernet interfaces
314 Gigabit Ethernet interfaces
1917K bytes of non-volatile configuration memory.
8192K bytes of packet buffer memory.

65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102

@Saran Komgris wrote:

Hostname uptime is 12 years, 37 weeks, 1 day, 2 hours, 20 minutes


Color me impressed!

For Sup720, the most well-acknowledged stable IOS are the SXI and SXJ trains.  

I suspect this is just memory rot compounded by the exceptionally high uptime.  

Georg Pauwen
VIP Master VIP Master
VIP Master


on a side note, according to the link below:

Recommended action: If the error message appears infrequently, no action is required. If the message reoccurs, reseat the SDRAM SIMM on the supervisor engine. If errors persist, replace the SIMM. If the errors continue after the SIMM is replaced, the supervisor engine may need to be replaced.

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