Ethernet Switches & Routers

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New Member
Posts: 1
Registered: ‎06-05-2014

Logging, Interface Status Changes, and Debugging

Hello Guys. We have some older Foundry switches that I am having an issue with. The model number of these is FES4802-ILP. 

 

User's have Avaya phones and are complaining of their phones rebooting often. All I see in my logs are STP State Changes when the interface first intilizes. I am not seeing the interface up/down messages in the log and can not figure out why. This is my first issue. My next issue is that I'd like to turn on some debugging to see if I can figure out why the interfaces are going down, but the debugging commands seem very limited and I do not see any that look like they're going to debug what I want. 

 

My config for logging is:

 

logging buffered 100

logging host x.x.x.x

logging host x.x.x.x

 

I tried issuing the "logging on" command and it takes it but doesn't show in the config. I assume becasue this is the default state of this command. I understand that "logging on" should show all levels of logging, however, I am not seeing interface state changes still. I tried all of the different logging commands, "logging buffered informational", "logging buffered notifications", etc. None of these show up in the config either...

 

Any suggestions?

Brocadian
Posts: 44
Registered: ‎01-05-2012

Re: Logging, Interface Status Changes, and Debugging

Are you checking the output of "show logging" ?

 

It should tell you what level Buffer Logging enabled, by default all level are enabled, ACDMEINW.

That may be why when you configure "logging buffer INformational" "logging buffer notification" you do not see changes in configure. because it is already enabled.

 

 

FES4802 Router#sh log
Syslog logging: enabled (0 messages dropped, 0 flushes, 1 overruns)
    Buffer logging: level ACDMEINW, 50 messages logged
    level code: A=alert C=critical D=debugging M=emergency E=error
                I=informational N=notification W=warning

Static Log Buffer:
0d00h00m11s:ASmiley Frustratedystem: Power supply 1, power supply on right connector is up


Dynamic Log Buffer (50 lines):
18d19h05m34s:W:IP: System: Duplicate IP address 10.200.128.251 detected sent from MAC address 748e.f8d8.0a40 interface 6, 1 packets
6d00h12m03s:ISmiley Frustratedystem: Interface ethernet 2, state down
6d00h12m03s:ISmiley Frustratedystem: Interface ethernet 1, state down
5d22h26m07s:ISmiley Frustratedystem: Interface ethernet 2, state up
5d22h26m07s:ISmiley Frustratedystem: Interface ethernet 1, state up
5d22h25m09s:ISmiley Frustratedystem: Interface ethernet 2, state down
5d22h25m09s:ISmiley Frustratedystem: Interface ethernet 1, state down
5d22h25m09s:ISmiley Frustratedystem: Interface ethernet 2, state up
5d22h25m09s:ISmiley Frustratedystem: Interface ethernet 1, state up
5d22h25m00s:ISmiley Frustratedystem: Interface ethernet 2, state down
5d22h25m00s:ISmiley Frustratedystem: Interface ethernet 1, state down
5d22h24m43s:ISmiley Frustratedystem: Interface ethernet 2, state up
5d22h24m43s:ISmiley Frustratedystem: Interface ethernet 1, state up
--More--, next page: Space, next line: Return key, quit: Control-c^C
FES4802 Router#

 

 

On debugging, if you are not login from the console, make sure to use "debug destination" to redirect the output..

 

FES4802 Router#debug destination
  console   Send debug message to console
  logging   Default
  ssh       Send debug message to SSH session
  telnet    Send debug message to telnet sessiion

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