Cisco Switching/Routing :: 3560 - Enable Informational Logging And Get All Messages?
May 9, 2012
I have a situation in which I want to log a specific message (informational - 6 level), but don't want to enable informational logging and get all the messages that come with it. Is there a feature in IOS, 3560 12.2(25r)SEE4, similar to the 'logging lists' feature on the ASA that allows you to specify logs that you want to capture without having to change your logging level? I didn't want to have to write an EEM applet for this, but if that's the only way, I'd consider it.
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May 27, 2012
Facing issue with 2960G switch , where its do not display "logging trap informational " in show running and show startup .where its showing all other levels from 0 to 5 and 7 after configuration and save commands. [code] after config getting saved , it do not shows in show runn or in show startup while for all other levels it do show the config lines .I tried the same on 12.55.SE release also but its same results . Is this a limitaion of this platform, is there any doc explaining the same for reference. [code]
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Apr 23, 2012
We had a core switch(4503) in our environment and recently we tried to enable syslog in the switch. But the syslog server doesnt receives all the configured level messages from the switch. Following is the only message getting in syslog server after the configuration change in switch.
%SYS-5-CONFIG_I: Configured from console by CWLMS onvty1
(No Traffic related messages like acl deny traffic, spanning tree events etc are getting to syslog server as well as log buffer of the switch)
Following are the logging configuration for the core switch
logging monitor informational
logging facility syslog
logging source-interface Vlan44
[Code]....
1) Is there any more configurations required for getting all traffic related messages, (i mean all possible messages - upto level 7 - debugging)?
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Mar 27, 2012
I have an issue with the syslog of 7600 router, I have configured the logging level to informational, but when I execute changes such as up or down an interface, the syslog messages aren't displayed? Why is the reason? This symptom exist after I changed the buffer size from default to 32768.
Router#sh log
Syslog logging: enabled (0 messages dropped, 0 messages rate-limited, 2 flushes, 0 overruns, xml disabled, filtering disabled)
No Active Message Discriminator.
No Inactive Message Discriminator.
Console logging: disabled
Monitor logging: level debugging, 40 messages logged, xml disabled,
[code]....
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Mar 19, 2012
can you enable dhcp service on a 3560 switch.
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Apr 21, 2013
on ASA 5540 , i configured the logging setup as following :
log in to the internal buffer : buffer size 1048576 bytes
Then i save the buffer to FTP server to save the log messages in continuously way everything was working fine but suddenly sending the ftp traffic to FTP traffic has stopped suddenly before in the live log viewer it was showing when ASA throws the ftp traffic to the ftp server but this stopped suddenly nothing has changed in the ftp server setting (same username and password and the connectivity is there) sending logging traffic to the ftp server came back just when i reboot the ASA.but this is not solution.
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Aug 16, 2011
Having a hard time trying to fiugre out how to enable the following logging on a 6509.I can't for the life of me figure this out.
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Sep 4, 2012
Network newbie here asking an embarrassing question on logging We have a Cisco router with the following IOS version. I want to enable logging; so do I need to configure event-log enable before adding the following logging configuration?
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Aug 11, 2011
I have configured dhcpd in an ASA 5505 and every thing is working. I am testing it to give me a warning when the address pool is about to be finished or it is empty. But don't konw how to do it. if I run the "debug dhcpd packet", i get that the address pool is empty.
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Oct 21, 2012
I ran into a problem a few weeks ago and am still trying to figure out why either the 3560 switch or our Cacti syslog server did not alert us when one of our ports was experiencing heavy CRC and Input errors.
I had upgraded the IOS to 12.2(55)SE6 and rebooted the switch. About a week later, someone was troubleshooting why print jobs were having problems printing to a high speed printer. When I looked at the interface it showed a few thousand CRC and Input errors. I cleared the counters and had them print again and watched as the CRC and Input errors went up. When I did a "show log" there were no error messages. Looking at our Cacti Syslog there were also no errors present for the past 6 months.
We found that the device on the port was set to auto speed and duplex and the switch port was at 100/Full. Once we got them to match the problem was resolved, but we were left wondering why we never got any alerts.
We also have some 3548 and 3550 model switches that Cacti picks up %LINK-4-ERROR for any ports that show CRC and Input errors. I did some research and it appears that the 3560 switches do not have the LINK facility code. I believe it has been replaced with a PHY link code but I'm not sure. We do have some "%PHY-4-EXCESSIVE_ERRORS: Excessive FCS, data, or idle word errors found" but they are all for 3750 switches. I could not find any 3560 that had alerted for that error or the LINK error.
I also tripped port security on the 3560 switch just to make sure that it was reporting correctly to Cacti and that alert did show up.
My question is how do I get a 3560 switch to alert in the logging buffer for CRC/Input/FCS errors? Also, how I can generate CRC and Input errors on purpose for testing? I tried mismatching the speed/duplex/Auto and only got collissions, no CRC or Input errors.
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Feb 11, 2012
Is there a way to get more messages out of a 2950 set to syslog? I've turned every logging option I can find to DEBUG, but all I get in my syslog are LinkUp/Down messages and "Configured from console by console". I'd love to see more information such as configuration changes, or even someone attempting to set up DTP on a switchport set to access mode.
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Mar 27, 2012
I've got a 48-port 3750 running 12.2(46)SE and I am seeing these messages in the logs. Has any seen this message before or what it means ?
Invalid packet (too large) length=22320
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Feb 28, 2012
I have a new redundant network with two cores C1 and C2 and five access switches A1 to A5. They are all Cisco SG300 switches. I have noticed there are too many STP messages emanating from one host which has a MAC address which cannot be traced on the network. In the redundant network, I made C1 the root bridge by giving it a priority of 4096 and C2 has been given a priority of 8192 so that it is the secondary root bridge in the network. I have left all other STP settings to default on the rest of the switches in the network.
The problem is that one host is advertising a RST root bridge all the time. Now it has a mac address which is different from the mac address of the root bridge itself and i cannot trace this mac address on the network. Look at the snapshot of Wireshark output in the attach.The source MAC address which is the host advertising all the time is 1c:df:0f:34:db and the root bridge is 1c:df:0f:bb:34:c4.
Why would the root bridge be resetted all the time?I've also noticed that one port in a LAG configuration on one of the access switches is flapping up and down all the time.I tried to troubleshoot this problem. It is not the cable. It would be something else. What could cause this flapping of the port?Could it be related to STP?
On the other Core switch C2 I can see a LAG status switching between forwarding and blocking all the time. What could make the LAG status to flap from forwarding to blocking and back all the time like this?
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Dec 16, 2012
Is there a way to turn off 802.1x authentication messages to the console of a 3750 switch? The issue we have is that we like to monitor the terminal when remotely configuring our switches. However, every time a computer authenticates to the network we get messages and sometimes quite a few depending on the situation.
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Dec 26, 2010
I had these error messages on both my Cisco 2851 and on my Cisco Catalyst 6506.
On Cisco 2851:
%SYS-SP-3-CPUHOG: Task is running for (2000)msecs, more than (2000)msecs (4/4),process = SEA write CF process. [code]...
And on 6506:
Dec 27 15:20:55 MET: %SYS-SP-3-CPUHOG: Task is running for (2000)msecs, more than (2000)msecs (129/129),process = SEA write CF process.[ code]...
I have these IOS versions on my Cisco:
Cisco 2851: 15.0(1)M4
Cisco 6506: 12.2(33)SXI
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Jan 24, 2012
While working at a client site today, I was troubleshooting some ICMP connectivity for a network we have created.I turned on 'debug ip icmp" on the 3550 switch int he middle, and was inundated with the following debug output:
Jan 25 11:01:14.641: ICMP: dst (172.16.1.7) port unreachable rcv from 172.16.1.5
Jan 25 11:01:14.641: ICMP: dst (172.16.1.7) port unreachable rcv from 172.16.1.5
Jan 25 11:01:14.641: ICMP: dst (172.16.1.7) port unreachable rcv from 172.16.1.5
Jan 25 11:01:14.641: ICMP: dst (172.16.1.7) port unreachable rcv from 172.16.1.5
[code]....
This output fires several times a second, and based on how often it is firing, I am curious if it may be a culprit with respect to the fact that the client has indicated that they have some slow internet.Should the next step be to look at the workstation at 172.16.1.5?
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Jun 12, 2012
Is there any way to change the port that is used for syslog messages on a Cisco 9500 switch?By default this is set to UDP port 514.There doesn't seem to be a command to change the port.
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Sep 30, 2012
We use C2950G switches with IOS 12.1(22)EA12 . Switches are set up to send logs to a server (informationnal level). On this server, we receive many of logs from those switches, but none about interfaces errors (even if interfaces statistics show interfaces errors). On C3548 switches it's work fine.How should I be sure the set up of switches is correct ? Why do I never receive messages as %LINK-4-ERROR:[char] is experiencing errors ?
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Aug 15, 2011
I m getting below error messages in show logs -
Aug 12 15:30:57.127 IST: %ENVIRONMENT-3-RPS_FAILED: Faulty internal power supply detected
Aug 12 15:31:02.175 IST: %ENVIRONMENT-3-RPS_FAILED: Faulty internal power supply detected
Aug 12 15:31:08.219 IST: %ENVIRONMENT-3-RPS_FAILED: Faulty internal power supply detected
Aug 12 15:31:10.239 IST: %ENVIRONMENT-3-RPS_FAILED: Faulty internal power supply detected
there is no error messages related to PSU in "show env all " log .
here is show version -
------------------ show version ------------------
Cisco Internetwork Operating System Software
IOS (tm) C2950 Software (C2950-I6K2L2Q4-M), Version 12.1(22)EA13, RELEASE SOFTWARE (fc2)
Technical Support: [URL]
Copyright (c) 1986-2009 by cisco Systems, Inc.
[Code] ....
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Feb 12, 2013
Setting up NTP. Currently the source for NTP within our network is our core 6500.Currently the NTP source for the 6500 are internet based NTP Servers. I would like to configure the 6500 to respond to NTP messages as the NTP Master. However will the 6500's source remain as the internet based NTP Servers?? In other words if the 6500is configured to be NTP Master, where would it get it's time from?
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Dec 26, 2012
I am getting the below messages on my Cisco 6500 series switches every 1min. The IOS version is 12.2(33)SXI6 & with SUP32-GE-3B
%ILPOWER-7-DETECT: Interface Fa1/1: Power Device detected: Cisco PD
%ILPOWER-7-DETECT: Interface Fa1/1: Power Device detected: Cisco PD
%ILPOWER-7-DETECT: Interface Fa1/1: Power Device detected: Cisco PD
These messages are I am recieving on few ports only not on all port having IP Phone connected. I tried changing the phone to some other model but that also did not resolved my problem. Also I tried powering on the phone using power adapter but the issue still persist.
Client are not facing any issues due to this error, but still I would like know what can be the issue which is generating these logs.
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Mar 19, 2013
I am looking for a way to see packets that are matched on certain ACLs in a CoPP policy map. I have read that it is not a good thing to add the log keyword at the end of an ACL when using that ACL for CoPP. I initially tried to use a logging policy map but the 6500 12.2sx doesn't support this.
how I can see source/destination IP for a certain class in a CoPP policy map?
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Oct 11, 2012
I am looking for soem best-practice and useful logging commands on 6500 and 3750 platforms. Some of them I have listed below. Is there any important ones I am missing Also, I need to know what kind of recommended logging level is for buffer and what is loggign level for syslog server?
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Nov 8, 2012
Is there any option to configure cisco 4507 to genrate log alert when cpu utilization or port utilization reaches above certain percentage.
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Oct 10, 2012
As part of troubleshooting a seperate issue, somebody on my 891 router had set logging trap debugging which shows as a line in sh run just above the access-lists. There is no syslog server however so I'd like to remove this entry, however when I do no logging trap debugging I end up with a no logging trap entry replacing the previous logging trap debugging entry. Is there away to be rid of this entry? I tried no no logging trap but of course that's an invalid command.
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Sep 19, 2012
We recently replaced our core switch from a non-cisco vendor with a Nexus 7010. With our old core switch, I had the ability to log changes to the ARP table. So if there was a dhcp conflict or a vMotion event, it would show up in the "show log" output. I've not found a way to do that with the Nexus switch - or at least no way to view the log. I have the command: logging level arp 6
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Jul 2, 2012
Query is, Can i send my syslog messages to SNMP sever? if so, what command needs to be enabled on nexus 7k?
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Dec 9, 2012
We have recently upgraded oor LAN and we are using couple of Nexus5548UP switches in the core with 2960 stacks as access switches. Each access switches stack is connnected to both core switches with link being port-chanels and VPCs. All is working fine, but our SolarWinds management platform (NPM) is being flooded with "Physical Address changed" events. Here is an example of messages:
NSW_Core_2 - Ethernet1/7 Physical Address changed from 000000003811 to 73616D653811
NSW_Core_2 - Ethernet1/7 Physical Address changed from 200B82B43811 to 000000003811
For each interface I have messages like these repeating.I am not sure what those messages means or if there is actually anything wrong. Performance of the network is good, there are no errors on any interfaces and I do not see anything related in the switch loggs.
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Jan 14, 2012
I am using radius authentication on C4507R+E with supervisor card 6L-E and IOS 15.0.2(SG1). It works perfectly but all radius messages appear in the console. Radius is very verbose, I can't use console because of the significant number of messages and I am worried about switches performances. I add that all debug commands are disabled.
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Jan 7, 2013
what logging buffered 51200 debug do?i saw it on cisco 881 sec k9
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Oct 20, 2011
i can't configure "logging event spanning-tree" on a specific port under IOS 12.2.(58) SE2 (all other "logging events" are possible), under 12.2 (55) it is possible. Is it now a known bug or a default value?
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Sep 25, 2011
We are facing issue with one of the module installed on cico 4506 swicth. All of a sudden cisco phones connected to that module went down and the messages logged on the console. [code]
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Jan 18, 2012
Ask this question, if someone came across a 6513, one of the RJ45 ports are constantly falling.The question is how to disable logging on a specific portno logging event link-status does not work.
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