"An error was encountered while attempting to browse the contents of SERVERNAME. A network connection to the server could not be established" occurs when attempting to select or backup a remote machine.

book

Article ID: 100022930

calendar_today

Updated On:

Description

Error Message

image.png

 

Cause

There is a networking or application conflict  between the Backup Exec server and the Backup Exec Remote Agent on the remote server.

Example debug output from the Backup Exec server's BERemote.exe process:
 
BEREMOTE: ndmpConnectEx : Control Connection information: A connection was established between end-points xxx.xxx.xxx.xxx:port and xxx.xxx.xxx.xxx:10000.
BEREMOTE: ERROR: message 0x20526571 not supported.
BEREMOTE: ERROR: ndmp_process_messages: Invalid Message Type: 54122

Resolution

1.Troubleshooting using telnet:
  • For Windows Server 2000/2003 Backup Exec Servers.
To test the connection between the backup server and the remote server, enter the following at a command prompt on the media server:
 
telnet servername 10000
 
For Windows Server 2008, the telnet client will need to be installed before running the telnet command. Refer to Microsoft article :
 https://technet.microsoft.com/en-us/library/cc730600(WS.10).aspx
 
i.Example telnet output: Open port by another application.
 
Fig. 1 shows a telnet connection to the remote server has been established successfully, but no non-standard characters are returned, showing the port is open, but not by Backup Exec for Windows.
 
Fig. 1
 
 image.png
 
ii.Example telnet output: Port not open or in use.
 
Fig. 2 shows a telnet connection to the remote server has failed, showing the port not in a LISTENING state.
 
Fig. 2
 
 image.png
 
 

2.Troubleshooting using netstat:

 To view the ports, process, and IP currently in use on the remote server, use the following command on the remote server:
 
 
     netstat -anb > c:\netstat.txt
 
  • This will list the port and process that is using the port to a text file on the C:\ drive. If another destination is preferred, simply change the drive letter and file name.
This will list the server name and port to a text file on the C:\ drive. If another destination is preferred, simply change the drive letter and file name.
 
Review the netstat.txt for port 10000 to confirm if the process is beremote and the state is LISTENING
 
Workaround:
 
  • The Backup Exec remote agent requires port 10000 by default to send and receive connections with Backup Exec for Windows server.
 Beremote.exe should be the only process using port 10000 and the state of the port should say LISTENING in the netstat log. If any other application has been assigned port 10000, the above error will occur.
 
  • If an alternative port for beremote.exe is required, refer to article below  on how to change the port being used for the remote agent process:

https://supportbackupexec.cloud.com/support-home/kbsearch/article?articleNumber=100016014&articleTitle=how-to-change-the-default-port-used-by-the-backup-exec-remote-agent-for-windows-servers-raws

 

 

Issue/Introduction

"An error was encountered while attempting to browse the contents of SERVERNAME. A network connection to the server could not be established" occurs when attempting to select or backup a remote machine.

Powered by Wolken Software