09-11-2012 07:53 AM
I have Cisco 2960's, 3750's and 3750x's all running IOS on the access layer. I have Cisco 6504's running IOS on the Distribution and Core layers. I am looking to monitor redundant links through Spectrum by having specific ports send traps but I have run into trouble finding how to configure it.
I would like to have:
1. Logging enabled for all links (Fiber and Copper) so that I see all links up/down messages in the syslog
2. SNMP traps sent for linkup/linkdown messages only for redundant links (ex. Dual Uplinks from Access Layer or Redundant Etherchannel Links on Dist Layer)
3. SNMP traps should be ignored/not sent for all copper ports.
Please let me know if you can help with this configuration.
09-12-2012 07:04 AM
1. enable logging to get all link-up link-down messages
service timestamps log datetime localtime show-timezone
logging host
logging trap informational
logging source-interface
logging buffered 65536
2. / 3. enable SNMP traps for link-up / link-down events globaly and disable them on a per interface basis
snmp-server host
snmp-server enable traps snmp link-up link-down
snmp-server trap-source
on the copper interfaces:
no snmp trap link-status
(or just enable it on the fiber interfaces and do not use the global command)
on fiber interfaces:
snmp trap link-status
09-12-2012 07:49 AM
Hi Martin and Thank you for your response!
I setup my devices as you stated, Enabling link traps globally and shutting off traps on each copper interface. When I test, I am getting two traps:
1. First trap is from the 2960 device stating Link Down.
2. Second trap is from the CiscoLogMibNotification stating Link Down.
The second trap is what is causing the erroneous traps. I would like to enable this all over my network but I get the CiscoLogMibNotification for each device where the link is connected. Your help is much appreciated.
09-12-2012 08:36 AM
have you the follwoing command in your config?:
snmp-server enable traps syslog
if so, disable it with
no snmp-server enable traps syslog
and test again; if you still have problems, please post the traps as an example
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