Troubleshooting Tips



Installation and Startup

  1. If I connect to the OpUtils from web browser (IE), it is asking user name and password, what to do ?

  2. I started OpUtils, but it says port 7080 is occupied. What should I do?
  3. Whenever I start OpUtils, the browser opens to launch the client? Is there a way I can disable this?
  4. After logging into the OpUtils client, clicking any links or tabs from the welcome screen takes me back to the login page. Why?
  5. In the startup, some extra processes are running in the windows task manager, why ?
1. If I connect to the OpUtils from web browser (IE), it is asking user name and password, what to do ?

 

The default user name and password to login to OpUtils is admin and admin respectively. Provide the username and password to login.

 

Questions 

2. I started OpUtils, but it says port 7080 is occupied. What should I do?

 

OpUtils by default run at port 7080. If this port is occupied, you will be prompted to specify your desired port number while starting OpUtils server.

 

Questions 

3. Whenever I start OpUtils, the browser opens to launch the client? Is there a way I can disable this?

 

Yes, you can disable this by clearing the "Open the client upon successful server startup" option under settings --> General.

 

Questions 

4. After logging into the OpUtils client, clicking any links or tabs from the welcome screen takes me back to the login page. Why?

 

The possible reasons could be:

  1. The DNS name is not configured the DNS Server - Try giving the IP Address to connect to the client.
  2. Mis-configuration in Browser settings - Try connecting to the client from a different browser/ machine.
  3. Security configuration, if any security software is installed - check after stopping the security software.

Questions

5. In the startup, some extra processes are running in the windows task manager, why?

 

The following processes are started along with OpUtils:

  1. A javaw.exe process for the OpUtils server,
  2. A javaw.exe process for the system tray operations, and
  3. A fbserver.exe for the FireBird database server.

Questions 

 

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Diagnostic Tools

  1. I installed the product in Linux machine, why is the default IP shown as 127.0.0.1?

  2. Devices are not responding to ping.
  3. Why does the Ping Tool hang when the Server runs in a Linux Machine?
  4. When a machine is SNMP enabled why does SNMP Ping tool display it as non-SNMP node?
  5. Why does the Trace Route tool display 3 different Response Time?
  6. Can Proxy Ping be initiated from any Router?
  7. Is there a way to increase the timeout value for Ping?
  8. I see junk characters when I query a non-English machine. What should I do ?
1. I installed the product in Linux machine, why is the default IP shown as 127.0.0.1?

 

This problem occurs when the 'hosts' file under '/etc' directory has the corresponding hostname as an entry. Delete the entry. This will ensure the machine IP is displayed correctly.

 

Questions

2. Devices are not responding to ping.

 

This happens if

  1. the device is not in the network
  2. ICMP request times out
  3. the packet size is too big

To resolve the ICMP Timeout, and the packet size issue, click the Settings link. In the ICMP table,

Note: When a Linux device is pinged, the default number of packets sent are 8 ICMP packets+ the number of packets specified by the user in the ICMP table. Hence, even if the packet size is reduced to 0 by the user, ping by default will sends 8 ICMP packets to the device.

 

Questions

3. Why does the Ping Tool hang when the Server runs in a Linux Machine?

 

The possible reason could be the given input machine is not in the network, but it's DNS name entry is present in the DNS Server. To resolve the issue update your DNS Server.

 

Questions

4. When a machine is SNMP enabled why does SNMP Ping tool display it as non-SNMP node?

 

To check SNMP settings go to Admin -> Settings -> SNMP page.

 

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5. Why does the Trace Route tool display 3 different Response Time?

 

Each of the response columns indicates the response time of that router as each hop is tested thrice.

 

Questions

6. Can Proxy Ping be initiated from any Router?

 

No. Proxy Ping should be initiated from a CISCO router as Proxy PING uses the proprietary Cisco "Remote PING" MIB within CISCO IOS.

 

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7. Is there a way to increase the timeout value for Ping?

 

Yes, you can increase the timeout value from Admin --> Settings --> ICMP page.

 

Questions

8. I see junk characters when I query a non-English machine. What should I do ?

 

To resolve the issue choose Admin and click on Settings available in the left panel. Choose the General tab. Enter appropriate character coding value and click Save. If the specified character coding is present in the server machine, it will be saved or else the default value is set. Also ensure your browser supports the specified character coding.

 

Questions

 

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Address Monitoring Tools

  1. Devices are identified by incorrect IP addresses and host names.

  2. The Subnet List Tool does not display all the subnets in the network.
  3. How to enable the MAC Address Scan tool to resolve more number of MAC Addresses?
  4. When I run the IP Address Manager Tool for the first time, it does not show any IP Address as available though I have free IP Addresses available in my subnet.
1. Devices are identified by incorrect IP addresses and host names

 

The possible reasons could be:

Try the Ping Tool.

 

Questions

2. The Subnet List Tool does not display all the subnets in the network
 

Subnet List creates the list of subnets by scanning the route tables, hence if the subnets have been summarized into a summary route on the router you are scanning, the Subnet List will not be able to discover the subnets in the network.

 

Questions

3. How to enable the MAC Address Scan tool to resolve more number of MAC Addresses?

 

To enhance the performance of the MAC Address Tool either ping scan your network,or add all your routers,switches,and gateway servers in Admin --> Add Router page and schedule periodic scanning.

 

Questions

4. When I run the IP Address Manager Tool for the first time, it does not show any IP Address as available though I have free IP Addresses available in my subnet.

 

When you run the IP Address Manager for the first time, all the responding IP's are shown as used and non-responding IP's are put in transient state. This is because, not all the non-responding IP's are necessarily available; it may be down as well. If an IP continuously never respond in the next 10 days, then it will be shown as available.

 

Questions

 

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Network Monitoring Tools

  1. Switch Port Mapper displays only the MAC Address and not the IP Address.
  2. How should I improve the performance of Switch Port Mapper as it is currently resolving very few MAC Addresses?
  3. I did a 'Switch Port Mapping' using the Switch Port Mapper tools in OpUtils. In the results, I can see several devices connected to a single switch port? How is this possible?
  4. I am not able to get the desktop details for an non-SNMP device?
  5. SNMP is enabled in all of my Linux servers. But I am not able see CPU utilization. What can be the possible reason?
  6. CPU Monitor neither plots nor throws any error when I give Linux machine as input?

 

1. Switch Port Mapper displays only the MAC Address and not the IP Address.
 

The possible reasons could be:

  1. The Router input is not specified. Enter the Router name to map MAC Addresses to IP Addresses. The Router should be in the same subnet as that of the devices connected to the switch.

  2. If the router input is not specified, the information is obtained from the ARP cache of the switch. A cache file is also maintained locally to store this information. Perform a ping scan of the subnet to update the cache and then perform the Switch Port mapping. This will improve the MAC to IP resolution.

Questions

2. How should I improve the performance of Switch Port Mapper as it is currently resolving very few MAC Addresses?

 

Use the Ping Scan tool to scan the network where the input router is present to improve the performance of the Switch Port Mapper tool.

 

Alternatively, specify the router and the subnet input in the Global Environment setting.

 

Questions

3. I did a 'Switch Port Mapping' using the Switch Port Mapper tools in OpUtils. In the results, I can see several devices connected to a single switch port? How is this possible?

 

One possible reason could be that the device connected to that port is a Switch/Hub. In that case, the Switch Port Mapper will show the devices that are connected to that Switch/Hub.

 

Questions

4. I am not able to get the desktop details for an non-SNMP device?

 
All the tools within the System Explorer retrieves data through SNMP. Enable SNMP in the device to get the details.
 
To check whether a device is SNMP-enabled or not, use the SNMP Ping tool.
 

Questions 

5. SNMP is enabled in all of my Linux servers. But I am not able see CPU utilization. What can be the possible reason

Though the system is SNMP-enabled, OpUtils cannot fetch data as the agent does not support Host Resources MIB. Read the SNMP installation section to install recent version of SNMP agent in your system and configure the agent.

 

Questions 

6. CPU Monitor neither plots nor throws any error when I give Linux machine as input?
 

This happens when the specified OID is implemented in the machine but the OID does not have any value.

Questions

 

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  Cisco Tools

  1. Will I be able to get the Access Lists of a router in the AAA/ACS setup?
  2. I do not have a username to access my router through CLI. What should I provide in the Username field?
  3. In the ConfigFile Viewer tool, I am not getting the Startup Config file. It says "Cisco Config Copy MIB" is not supported?
  4. Why do I get the error "E5003: Unable to bind to Port -69" in Config File Viewer?
1. Will I be able to get the Access Lists of a router in the AAA/ACS setup?
 
Yes. To get the Access Lists of a router un the AAA/ACS setup, provide the username and password in the respective fields.
 

Questions

2. I do not have a username to access my router through CLI. What should I provide in the Username field?
 
The username is required only for routers in AAA/ACS setup. Leave it blank, if it is not required.
 

Questions 

3. In the ConfigFile Viewer tool, I am not getting the Startup Config file. It says "Cisco Config Copy MIB" is not supported?
 
Startup Config file of the router can be retrieved only if the Cisco Config Copy MIB is implemented in the router. If this MIB is not implemented, you can only view the Running Config file.
 

Questions

4. Why do I get the error "E5003: Unable to bind to Port -69" in Config File Viewer?

 

The Config File Viewer starts the TFTP Server at port 69 for downloading the config files from the Cisco devices. This error message is shown when it is unable to start the TFTP server at port 69, which can be due to the following:

  1. When OpUtils is not started as a root in Linux operating systems.

  2. When port 69 is already occupied by some other service.

Questions

 

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SNMP Tools

  1. The MIB Node Viewer shows an error as "Unrecognized OID"?
  2. Why do I get the error "E5003: Unable to bind to Port -162" in Trap Receiver tool?
  3. Is it possible to receive the traps with community string as other than public?
1. The MIB Node Viewer shows an error as "Unrecognized OID"?
 
The MIB Node Viewer retrieves the details of the specified OID from the MIB Database. If the specified OID is not present in any of the MIBs available in the MIB database, this error is shown.
 
However, you can add your own MIBs to the MIB Database and view the details using the MIB Node Viewer tool.
 

Questions 

2. Why do I get the error "E5003: Unable to bind to Port -162" in Trap Receiver tool?
 
This error message is shown when it is unable to start the trap listening service at port 162, which can be due to the following:
  1. When OpUtils is not started as a root in Linux operating systems.
  2. When port 162 is already occupied by some other service.

Questions

3.  Is it possible to receive the traps with community string as other than public?
 
Yes. Specify all the community strings as comma separated values in Settings --> SNMP.
 

Questions

 

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