syslog server not getting any logs

Unanswered Question
Sep 21st, 2007
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i have a problem with my 1841ISR and my Catalyst 3500xl switch... I have currently configured a kiwi syslog server but it seems that only my PIX firewall is the one sending out debugging logs and my switch and router isn't.

below is my switch config:

Current configuration:


version 12.0

no service pad

no service timestamps debug uptime

no service timestamps log uptime

service password-encryption

interface VLAN1

ate to u

ip default-gateway

logging trap debugging

logging facility local5

logging source-interface VLAN1



and for my router I do see syslog messages on my kiwi but only this type of logs:

2007-09-20 16:38:35 Local7.Info 169: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host started ? reconnection

2007-09-20 16:38:35 Local7.Notice 168: %SYS-5-CONFIG_I: Configured from console by admin on vty0 (

2007-09-20 15:08:02 Local7.Warning 144: 000142: *Sep 20 15:12:39.687 PCTime: %IPS-4-SIGNATURE: Sig:11208 Subsig:0 Sev:2 Yahoo Messenger Client DNS Request [ ->]

2007-09-20 15:31:49 Local4.Info %PIX-6-302015: Built inbound UDP connection 82117 for outside: ( to inside: (

and below is the configuration of my ISR:

version 12.4

no service pad

service tcp-keepalives-in

service tcp-keepalives-out

no service timestamps debug uptime

no service timestamps log uptime

service password-encryption

logging trap debugging

logging source-interface Vlan3



can anyone help?


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vaisharm Fri, 09/21/2007 - 01:27
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Hi, Looks like the router is able to send the logs to the syslog server just fine. I am not sure, what is it that you are missing? Are there any additional logs that you can see in the 'show log' output on the router but not on the syslog server? If not, I think the router is logging just fine.

For the switch -

Is the syslog server connected to a port in Vlan3 as well?

Are you able to ping it from the syslog server from the switch?

Are there any intermediate devices between the switch and the syslog server?

Remove 'logging source-interface Vlan3' and see if that helps.

- Vaibhav

brianbono Fri, 09/21/2007 - 02:36
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for the switch -

It is on the same VLAN as the syslog server and i am able to ping the syslog server from the switch itself...

i'll try remoing the 'logging soure-interface Vlan3' to see if that helps.

i'll keep you posted...


vaisharm Fri, 09/21/2007 - 03:29
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Is the switch connected directly to the syslog server? If not, can you check if udp port 514 is allowed (if there's a firewall in between)?

If all's okay, the best thing to do is span the port on the switch which connects to the syslog server and capture sniffer trace. If the sniffer shows syslog messages leaving the switch, the problem is not with the switch.

hobbe Fri, 09/21/2007 - 01:38
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just a wildcard.. but have you tried the "logging on" command ?

Richard Burts Fri, 09/21/2007 - 06:09
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I am wondering about this command:

logging facility local5

is the Kiwi processing for local5? If you remove this command from the switch config does the behavior change?




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