Getting port 4747 is unreachable when executing getone command

Document ID : KB000008232
Last Modified Date : 14/02/2018
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Issue:

Unable to discover SNMPv3 devices.

Environment:
eHealth 6.3.2.11 on windows 2008R2
Cause:

When trying to verify Brassd communication using getone command, it's giving error port 4747 unreachable.

Resolution:

Even though there is no firewall between eHealth server and target SNMPv3 device and also windows firewall is turned off on eHealth server,but still we are getting port 4747 unreachable.

=> Verify whether the file C:\Windows\System32\drivers\etc\services is having the below two lines in it for brassd to listen on port 4747.

secpack 4747/udp 
secpack-trap 4749/udp

=> Add these lines and restart brass services.

=> Now try to discover devices.

 

Additional Information:

To verify

netstat -ano | grep 127.0.0.1 | grep -i 4800 
TCP 127.0.0.1:6842 0.0.0.0:0 LISTENING 4800 
TCP 127.0.0.1:6843 0.0.0.0:0 LISTENING 4800 
UDP 127.0.0.1:4747 *:* 4800