Cisco Nexus 5000 Series Troubleshooting Manual page 6

Traps
S e n d d o c u m e n t c o m m e n t s t o n e x u s 5 k - d o c f e e d b a c k @ c i s c o . c o m .
Traps
Traps not received
The results of traps are not received.
Possible Cause
The traps might not be enabled or the SNMP host might not be accessible.
The following are possible causes:
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Solution
Use the following commands to check whether the proper VRF is configured for the SNMP host and that
the trap is enabled:
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DNS
DNS resolution not working correctly
When specifying a host name using DNS or VRF, the host name is not resolved and an error occurs.
Possible Cause
The DNS client is not configured correctly.
Solution
Use the following commands to configure the DNS client:
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Cisco Nexus 5000 Series Troubleshooting Guide
1-6
Traps might not be enabled.
The SNMP host might not be accessible.
A firewall might be blocking access.
An access list might be blocking UDP port 162.
snmp-server enable traps <trapname>
snmp-server host <x.x.x.x> use-vrf <vrf-name>
where x.x.x.x is the IP address of the trap receiving device.
config t
vrf context management
ip host name <address1 [address2... address6]>
ip domain-name name [use-vrf <vrf-name>]
ip domain-list name [use-vrf <vrf-name>]
ip name-server <server-address1 [server-address2... server-address6]>< [use-vrf vrf-name>]
ip domain lookup
show hosts
copy running-config startup-config
Chapter 1 Troubleshooting System Management Issues
OL-25300-01