cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
717
Views
0
Helpful
12
Replies
Manish.mac03
Beginner

Network Troubleshooting

A single user unable to access the one application, need all the possible steps to fix this, like what to check in user pc, and switch and router ??

can someone help.

1 ACCEPTED SOLUTION

Accepted Solutions

from PC -  (post below output)

ping application-ip  : Able to ping without fail.

telnet application-ip 443  - yes 

as per the information, Looks like for me browser issue, try a different browser?

 

can you post what error you getting when you issue https://application-ip  or https://xyz.com (your application FQDN)

 

Press F12 and check the network (give you some information) - 

 

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

View solution in original post

12 REPLIES 12
balaji.bandi
VIP Guru

First define, what appliation ?

 

1. what is the source IP

2. what is the destination IP - where the application not able to access

3. what is port application running?

4. what all the devices in the path to reach source IP to destination IP

5. Is source IP able to ping Destination IP ? YES or  NO ?  YES next step - No then does the Source IP able to reach the gateway

6 YES - telnet IP address port (what is the outcome)

7, is the application HTTP based or HTTPS based? (try different browsers?

 

Like this N number of combination until you get success.

what is the difference between a working device vs not a working device?

 

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

Hi Balaji,

appreciate your response  

It’s one internal company application, (other applications and internet is fine) that he is not able to access and rest all able to access.

First define, what application ?

  1. what is the source IP : Internal company application (any private ip- 10.0.0.0/24 network)
  2. what is the destination IP - where the application not able to access : At any branch location and the application server hosted in Data center 
  3. what is port application running? Port number is correct
  4. what all the devices in the path to reach source IP to destination IP :  PC> Switch L2-> RouterL3> ISP network > Datacenter 
  5. Is source IP able to ping Destination IP ? YES or  NO ?  YES next step - No then does the Source IP able to reach the gateway – Able to reach to the gateway
6 YES - telnet IP address port (what is the outcome) : Telent the gateway ip right (if it is router, what to check in router)?

7, is the application HTTP based or HTTPS based? (try different browsers? : HTTPS

 

 

Thank You 

MAC

Hello,

 

what application is that anyway, and 'no access' means the user cannot see/open the webpage, or log in ?

 

What is the difference between this user, and users that CAN access the application, are they on the same hardware/OS ?

Hello Georg,

User cannot see/open the webpage. (Company one of the internal Application)

The orther users are using same hardware/OS asme as this user.

 

 

Thanks

MAC

what is port application running? Port number is correct
what all the devices in the path to reach source IP to destination IP :  PC> Switch L2-> RouterL3> ISP network > Datacenter

is this issue for only 1 PC ?  how about other devices ?

Can this able to ping that Application Server IP address ?

from DC network can you able to access https application ?

 

from PC -  (post below output)

ping application-ip

telnet application-ip 443  

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

Hi Bala,

is this issue for only 1 PC ? : Yes

how about other devices ? : Working Fine

Can this able to ping that Application Server IP address ? Yes

from DC network can you able to access https application ? Yes it is. (Working fine for other users at the location)

 

from PC -  (post below output)

ping application-ip  : Able to ping without fail.

telnet application-ip 443  - yes 

 

Thanks

MAC

from PC -  (post below output)

ping application-ip  : Able to ping without fail.

telnet application-ip 443  - yes 

as per the information, Looks like for me browser issue, try a different browser?

 

can you post what error you getting when you issue https://application-ip  or https://xyz.com (your application FQDN)

 

Press F12 and check the network (give you some information) - 

 

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

Thanks balaji,

Looks like it was users browser issue, after clean up the browser it is working fine so far.

 

 

Thanks 

MAC

Manish.mac03
Beginner

Can some explain the most challenging issues you have ever faced and what an all steps you have done to fix it, may be switching, routing, datacenter any issues.

please describe everything you have troubleshoot??

Leo Laohoo
VIP Community Legend


@Manish.mac03 wrote:

A single user unable to access the one application


This is the source and solution to the problem:  ONE SINGLE USER.  

paul driver
VIP Expert

Hello
Shutdown all applications on that users pc , Then initiate a wireshark capture as you try to establish connection to that specific application, when it fails stop the capture and post the .pcap file


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

Thanks Paul,

Looks like it was users browser issue, after clean up the browser it is working fine so far.

 

 

Thanks 

MAC