Why is snmpd using random ports in Red Hat Enterprise Linux 5?

Solution Unverified - Updated -

Issue

SNMP daemon is listening on random ports. As you can see in the below example, first it is listening on 32669, then 21364, then 38951.

Example

[root@XXX ~]# netstat -npul | grep snmpd
udp   0   0   0.0.0.0:32669     0.0.0.0   6799/snmpd     
udp   0   0   127.0.0.1:25375   0.0.0.0   6799/snmpd     
udp   0   0   0.0.0.0:161       0.0.0.0   6799/snmpd     

[root@XXX ~]# service snmpd restart
Stopping snmpd:          [  OK  ]
Starting snmpd:          [  OK  ]

[root@XXX ~]# netstat -npul | grep snmpd
udp   0   0   127.0.0.1:25375   0.0.0.0   9706/snmpd     
udp   0   0   0.0.0.0:161       0.0.0.0   9706/snmpd     
udp   0   0   0.0.0.0:21364     0.0.0.0   9706/snmpd

Environment

  • Red Hat Enterprise Linux 5
  • net-snmp

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.