Cisco Switching/Routing :: 3560 - CEF Has Been Disabled Due To Low Memory

Jul 15, 2009

I have a 3560 connected to an edge device and I keep etting this error.  I have turned off proxy arp and turned off ip cef under the interface, however I lot connectivity to the internet when I did that.  I can't seem to find any documentation on this error. I understand what it means, I just don't know how to resolve the problem.

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Cisco Switching/Routing :: 3560 CEF Has Been Disabled Due To Low Memory

Jun 7, 2013

I have a 3560 connected to an edge device and I keep etting this error.  I have turned off proxy arp and turned off ip cef under the interface, however I lot connectivity to the internet when I did that.  I can't seem to find any documentation on this error. [code]

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Cisco Switching/Routing :: High Memory Utilization Of 3560 Switch After Upgrade IOS

Mar 5, 2013

I upgrade the IOS of my switch 3560 from   C3560-IPBASE-M), Version 12.2(25)SEB4,  To   C3560-IPBASEK9-M), Version 12.2(55)SE5 after that the utilizatio of the memory increase to 80% I attached the output of show memory statistics history

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Cisco WAN :: Auto-summarization Disabled In EIGRP On IP-Base 3560

Oct 4, 2012

I'm running IP Base on my Catalyst 3560. I'm aware of the fact that this license only allows for EIGRP stub routing - this is desired. However, I don't seem to be able to run the "no auto" command to disable auto-summarization. The command works, but doesn't make it into the running config.
 
3560-1(config-router)#no eigrp stub connected
EIGRP is restricted to stub configurations only on this platform.
3560-1(config-router)#no auto

[Code].....
 
Not a huge deal since a "show ip prot" indicates that auto-summarization is already disabled, so I'm guessing this is why "no auto" will not take. Why auto-summarization is disabled by default in my scenario?

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Cisco Switching/Routing :: 2821 With 16-ESW CEF Low Memory

May 29, 2012

According to my boss every 3 to 4 months he has to restart our 2821 with a 16-esw module installed because of a low memory issue dealing with CEF. Here is the exact error message.

%% Low on memory; try again laterJun  8 11:18:51.777: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition. It can be re-enabled by configuring "ip cef [distributed]" Jun  8 11:19:51.823: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition. It can be re-enabled by configuring "ip cef [distributed]" %%

Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later

Jun  8 11:20:51.868: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition. It can be re-enabled by configuring "ip cef [distributed]" Jun  8 11:21:51.914: %FIB-2-FIBDOWN: CEF has been disabled due to a low memory condition. It can be re-enabled by configuring "ip cef [distributed

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Cisco Switching/Routing :: 3750 - Low On Memory / Try Again Later

Nov 22, 2011

Today, one of our Cisco 3750 got unmanaged from NOC, we were able to ping the switch, also, traffic was flowing fine but not able to telnet or local login.On trying to login through console following messages were coming:
 
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later
%% Low on memory; try again later

[code].....
 
We given power on reset, after which we were able to login switch again. I wanted to know the actual reason behind it and if there is any other way to recover switch other than power reset.?

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Cisco Switching/Routing :: ISRG2 Runs Out Of Memory

Sep 5, 2012

ISRG2  (c2951-universalk9-mz.SPA.152-4.M1.bin) has 512 MB of DRAM. Periodically it runs out of memory: [code]
 
 1. Why "show process mean" command shows less memory than 512 MB? Processor Pool (248 MB) + I/O Pool (58 MB) ~ 310 MB only?
 
2. *Init* process holds more memory than normal (202 MB). What may cause this? 

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Cisco Switching/Routing :: Catalyst 3750 Low On Memory

Jul 25, 2012

have 3 Catalyst 3750 in same stack, the IOS version is 12.2(53)SE2. Today we can not telnet/ssh to this switch, but ping is ok, and switch function is ok. I try to access the console port, it show "low on memory, try again later". After I reboot the master switch in the stack, the master switch change to another switch, then I can telnet/ssh to this switch. I check the Ciscoworks server syslog report, there are many MAC address flapping error message, and I beleive the MAC address flapping occured before several weeks. ( the G2/0/15 & G3/0/15 is connect to a VMware ESX server and the EtherChannel config mismatch with this Catalyst 3750 switch ) How to mention the root cause of the "low on memory" problem and what is the abnormal memory usage ( free memory percentage below ?% )?

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Cisco Switching/Routing :: Ws-C3550-24-Emi Memory Upgradable?

Nov 3, 2011

i have a Ws-C3550-24-Emi switch and i need to upgrade its flash memory to 32Mb. I couldn't find any documents in cisco website about the memory upgrade guideline. Possible to upgrade this switch to 32Mb? If so, what's the max of memory i can upgrade? and the part number for this type of memory?

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Cisco Switching/Routing :: 4507R Bootflash Memory

Dec 28, 2011

I have a bootflash in 4507R with the size of 60MB. I upgraded the ios from cat4500-ipbasek9-mz.122-37.SG1.bin (12.8MB Size) to cat4500-entservices-mz.122-37.SG1.bin (13.8 MB SIZE) and deleted the previous IOS.But previous IOS is still getting shown in sh bootflash: command. Furthermore,  dir bootflash: commands shows there is only one IOS , which is running. How I can free the space from bootflash , as I again have to upgrade the another new IOS ( of 16MB), which I tried through solarwinds tftp and couldn't upload successfully because of its limitation. Now, If I try to upload the new IOS through FTP, it gives me memory space error. How I can free the space captured by old IOS and also how I can delete the 3rd unknown entry of IOS (shown below output of commands)?

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Cisco Switching/Routing :: 2960-S High Memory Use In 15.0 (2) SE

Dec 9, 2012

I am noticing high memory used on my 2960-S I am running 15.0(2)SE.  I am concerned that there is a problem with this model and IOS. 

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Cisco Switching/Routing :: High Memory Utilization SW 3750

Sep 6, 2012

I have a Switch WS-C3750E-48PD-SF with IOS 12.2(58)SE2 which reports more than 80% in utilization of memory I don't know what is causing the high memory utilization.

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Cisco Switching/Routing :: 1811/k9 DDR Memory Test Failed?

Oct 25, 2012

Recently i atsrt having problems with my cisco router 1811/k9, apparently was booting continiosly when restarted.
 
After i connected my console i found the problem while booting:
 
DDR memory test failed.  Resetting the router ...
 
I tried to contact cisco TAC, but i need a reseller contract number to place a ticket, i do not have a resller contract number as my router was bought more than two years ago. I called cisco support and they told me to contact my reseller, my reseller told me to contact cisco so i am in a eternal loop of forwarding phone calls...

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Cisco Switching/Routing :: High Process Memory 6509?

Nov 13, 2011

which process is consuming high memory with my c6509 switch.

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Cisco Switching/Routing :: 6509 High Memory Utilization?

Dec 6, 2011

I've noticed that my 6509's running VSS seem to have high I/O memory utilization.
 
I/O memory: Sw/Mod         Bytes:       Total           Used           %Used
             1/1                      8126344        7886544             97%
             1/2                     11796240       11442472             97%
             1/5  RP                 12058384       10715832             89%
             1/5  SP                  8388608        8104304             97%
             1/7                      8126344        7886544             97%

[code]....

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Cisco Switching/Routing :: C2960G-48TC-L Upgraded To 15.0.2-SE1 Now Low On Memory / No SSH?

Jan 16, 2013

I managed to upgrade this C2960G-48TC-L from 12.2.35-SE5 to 15.0.2-SE1 and now I can't connect anymore via telnet nor ssh. Console output simply shows
 
%% Low on memory; try again later

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Cisco Switching/Routing :: 2960 High Memory Utilization

May 2, 2013

I noticed on the 2960 switches we have deployed that are running the latest IOS, 12.2(58)SE2, memory utilization is really high (almost 80 percent). I have not noticed any side effects but I wanted to verify this is acceptable. My question is does the high memory utilization matter? I see this may be related to bug CSCtw83946 but no resolution is mentioned.
 
I did some testing various IOS revisions and below is what I have found using a WS-C2960-48TC-L with default configuration and only my laptop connected to a switchport in vlan1. You will notice memory utilization will grows with each version but jumps drastically with 58. One difference with 58 I needed to use a different command to retrieve memory utilization. The output was gathered by pasting the output of the show command into the Cisco Output Interpreter on their website.
 
IOS
Show Command
Output
c2960-lanbasek9-mz.122-35.SE5.bin
show memory
[Code]....

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Cisco Switching/Routing :: Corrupted Memory 2811 Router

Jun 25, 2012

router 2811 has 2 files ios in flash
Router#sh fla
-#- --length-- -----date/time------ path
1     35202336 Mar 3 2008 16:12:28 +00:00 c2800nm-adventerprisek9-mz.124-8d.bin
...
13    59374168 Mar 5 2012 12:49:22 +00:00 c2800nm-adventerprisek9-mz.124-24.T.bin
 
151076864 bytes available (105431040 bytes used)
 
Router#
 
I try to make it load c2800nm-adventerprisek9-mz.124-24.T.bin
 
[Code] ...........
 
I did
verif flash:c2800nm-adventerprisek9-mz.124-24.T.binit is ok
 
is it corrupted memory? how to fix it?and aslo with System image file is "flash:c2800nm-adventerprisek9-mz.124-8d.bin"it dos not show voice ports for WIC2-FXO in runn conf

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Cisco Switching/Routing :: 2911 - Invalid Memory Action

May 1, 2012

We have a Cisco 2911 router. We installed a EHWIC-4ESG module and configured the router based on configuration below.
 
ROM: System Bootstrap, Version 15.0(1r)M9, RELEASE SOFTWARE (fc1)
System image file is "flash0:c2900-universalk9-mz.SPA.151-4.M1.bin"
 
Cisco CISCO2911/K9 (revision 1.0) with 483328K/40960K bytes of memory.
7 Gigabit Ethernet interfaces
1 terminal line(code)

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Cisco Switching/Routing :: 6513 VTP Pruning Disabled During IOS Upgrade

Jul 11, 2011

We have a pair of 6513s and upgraded the IOS version to 12.2(33)SXI4a. After the upgrade we noticed VTP Pruning was disabled: [code] Is there any effect to production we need to to consider when re-enabling? (In other words, do we need to wait until a maintenance window to enable?)Also, we are using VTP v2 (and v1...) on our VTP Client 3560 access switches.

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Cisco Switching/Routing :: Can LLDP Be Disabled On SGE2000 Switch

May 2, 2013

I just want the switch to be quiet so that I can perform some network testing with only the connected hosts showing up in my traffic analysis program. But every 30 seconds or so the switch sends out an LLDP packet. This switch is only used in the lab for running tests so I know I don't need the LLDP feature running.
 
This article explains how to disable LLDP globally on a Catalyst switch, but I can't find any option to disable LLDP in the SGE2000's configuration menus.

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Cisco Switching/Routing :: 2801 Password Recovery Disabled

Oct 5, 2011

I have a major problem with our core 2801 router. In summary it appears that a staff member disabled password recovery, deleted the IOS and rebooted.  Net result is no Rommon and no IOS on the flash.  I've read that the Conf-Reg will be reset if I remove the NVRAM but I cannot identify it on the board.  If I can get to Rommon I can recover.  Currently I don't have Flash reader to restore to flash.

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Cisco Switching/Routing :: Error Disabled Recovery 2960

Apr 1, 2012

i have enabled error disbled recovery with time interval of 600 seconds on my 2960 switch.
 
What exactly this command does? Pls explain

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Cisco Switching/Routing :: High Memory Utilization In WS-C2960-48TT-L

Nov 9, 2012

I am facing high memory utilization in Cisco 2960 switch having IOS version 12.2(55)SE3.
 
The error we are getting is:
 
A "LiveHealthAlarm" event has occurred, from SwCiscoIOS device, named Switch2960.  eHealth Alarm Start Time - Fri 09 Nov,2012 - 03:02:48 eHealth. Switch2960-RH-MemoryPool-Processor-Processor-1.Memory utilization high-Threshold set at 70%SPECTRUM ALARM ID|22233284 I have attached the logs also.

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Cisco Switching/Routing :: High Memory And CPU With 3750 Stack Switch?

Dec 26, 2012

We are having 3750 Stack switch as our edge switch. Here we are having some issues as low memory & itermediate High CPU utilization.For memory when we checked its shwoing maximum memory is allocated to DHCPD receive & ARP Input as follows
 
Processor Pool Total:   70829380 Used:   56809532 Free:   14019848
      I/O Pool Total:   12582912 Used:    8554920 Free:    4027992
Driver te Pool Total:    1048576 Used:         40 Free:    1048536

[code].....

i want to understand why this 2 proceses (DHCPD & ARP input) taking more memory?High CPU: We also facing intermediate high CPU utilization (above 95%). When CPU is high there were 2 processes consuming more CPU are 'Spanning Tree' (about 20%) & ARP Input (about 66%). we also checked the ARP entries, there were 1500 ARP entries & 2 incomplete ARP (out of 6000 ARP supported)

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Cisco Switching/Routing :: 1900 Acceptable Memory Leaks Quantity And CPU

Apr 24, 2013

I am troubleshooting memory leaks and buffers issues on my 1900 and had some doubts regarding the problems that my router causes.Intermitently during the day for no reason the gig0/0 interface connected to ISP stops responding from our management network (log shows that the interface goes down).  The ISPs modem responds fine from my management network.The issue goes away by itself in 20 minutes, sometimes more or after a hard reboot.Sometimes a router would increment a throttle value to 1. When running for 4 days without a reboot, the router raised 39 throttles and 57 input drops. [code] The router is running Version 15.1(2)T4 and I was not able to find any caveats on cisco web page (although I havent used the bug finder tool)Is this only leak I found a reason to start worrying or I can disregard it and continue basic troubleshooting (change cable and plug my ISP to another port)

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Cisco Switching/Routing :: 3750 Stack - High Memory Utilization?

Jan 21, 2012

I have a new cisco 3750 stack comprised of 8 members (6 x 3750G-48PS and 2 x 3750V2-48PS) running 'c3750-ipservicesk9-mz.122-58.SE2.bin'. I am seeing high memory utilisation, it seems to sit fairly stable and I do not see an increase but this has only been running a few days. No errors or performance issues. Should this be a cause for concern?

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Cisco Switching/Routing :: Memory Status Alert Logs On Nexus 7K?

Mar 22, 2012

Below memory status alerts of are seen on our syslog server for Nexus 7K switch(Default VDC).
 
PLATFORM-2-MEMORY_ALERT_RECOVERED: Memory Status Alert : CRITICAL ALERT RECOVERED
PLATFORM-2-MEMORY_ALERT_RECOVERED: Memory Status Alert : MINOR ALERT RECOVERED
PLATFORM-2-MEMORY_ALERT_RECOVERED: Memory Status Alert : SEVERE ALERT RECOVERED
 
Memory threshold Not created on Nexus. Can we ignore this alert or does it impact our current network traffic?

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Cisco Switching/Routing :: 3750g And 3750x High Memory Utilization?

Jun 11, 2013

We had a stack of 4 qty 3750g running IP base on ver 12.2.32, then installed a 3750x to the stack and upgraded the whole stack to 15.0.2 SE3. In doing so, we noticed that the memory utilization jumped from 60-70% to 83-84%.
 
We had the same issue occur when upgrading to 15.0.2 SE3 on another stack that was 6 qty 3750g running ip-services, but this one jumped to 90%.  On the 6 qty stack, we downgraded to 12.2.55 and the memory util went back down to 60-70%. 
 
On the mixed stack, we replaced the 3750x with another 3750g and downgraded the whole stack to 12.2.55, however, the memory utilization did not drop down.  As far as I can tell, no config changes have changed from the original IOS. 

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Cisco Switching/Routing :: 6500 VSS - Correctable Dram Memory Error

Nov 15, 2011

Since yesterday, i see
 
Nov 16 13:23:21.355: %SYSTEM_CONTROLLER-3-MORE_COR_ERR:  255 correctable DRAM memory errors in previous hour
Nov 16 13:23:21.355: %SYSTEM_CONTROLLER-3-COR_MEM_ERR: Correctable DRAM memory error. Count 623, log 8053C830
Nov 16 14:23:21.340: %SYSTEM_CONTROLLER-3-MORE_COR_ERR:  255 correctable DRAM memory errors in previous hour
Nov 16 14:23:21.340: %SYSTEM_CONTROLLER-3-COR_MEM_ERR: Correctable DRAM memory error. Count 879, log 8053C810
 
error on switch console every hour.
 
ios version : Cisco IOS Software, s72033_rp Software (s72033_rp-ADVIPSERVICESK9_WAN-M), Version 12.2(33)SXJ1, RELEASE SOFTWARE (fc2)

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Cisco Switching/Routing :: Can TCAM Memory Cause High CPU On 3750 Stack

Sep 12, 2012

We have a 3750 stack with a mix of 3750G and 3750X switches. The current active template on the switch is desktop default and we are running EIGRP on the switch with large routing table so we get the TCAM error that a specific prefix cannot be programmed in TCAM memory so it will be software forwarded.%PLATFORM_UCAST-4-PREFIX:  One or more, more specific prefixes could not be programmed into TCAM and are being covered by a less specific prefix, and the packets may be software forwarded
 
This error is quite frequent on a daily basis. My question is that will this error create a high CPU situation and affect traffic processing on the stack causing ESX Hosts to become unresponsive? 

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Cisco Switching/Routing :: Packet Drops On Queue On 6509 Even Though QOS Is Disabled

Mar 9, 2013

I can see drops on the 6509 Queue for interface gi1/6 , qos is disabled globaly with qos disabled all packets are in one Queue using best effort my question is if I can see drops using the sh queueing int Gi1/6 command  why I am not seeing any drops when I run the Sh int (interface number )  command. [code]

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Cisco Switching/Routing :: Catalyst 2900 XL Console Access Disabled

Jun 30, 2012

I just purchased a used Catalyst 2900 XL switch and have not been succesful in connecting to the console via minicom 2.5 running on Ubuntu 12.04 or 11.10, I don’t even get junk charecters in the terminal or echo on input. The switch passes POST according to the LEDs on the front and the network ports are fucntional for switching purpouses.
 
I’m using a Prolific PL2303 USB-Serial adapter, which works with minicom to console into another device.  I’ve tried every baud rate available and tried combonations of hardware flow control, software flow control, and niether.I’ve tested the pinout of the console cable and all pins map correctly according to Cisco spec.I’ve also tried Cutecom, putty, and screen. I have not tried HyperTerminal because I do not use windows.Is it possible that the previous owner disabled console access? Do I need to reboot the switch each time I test a different baud rate?

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