topic RE: Netsight can not poll from switch behind firewall in ExtremeSwitching (EXOS/Switch Engine)

Netsight can not poll from switch behind firewall

Husam — Tue, 20 Oct 2015 13:01:00 GMT

I am using default SNMP setting, for local switch everything is going well but for remote site I can discover all switches using SNMP default setting but I can not poll any information.

the connection between netsight and switches is over VPN and all ports are opened.

is there any special config should be done for remote site:

Thanks in advance,
Husam

RE: Netsight can not poll from switch behind firewall

Ronald_Dvorak — Tue, 20 Oct 2015 13:43:00 GMT

Hi Husam,

could you please enable "redirect client/server snmp connection" and let us know whether that solves your problem.

https://gtacknowledge.extremenetworks.com/articles/Solution/NetSight-Discover-does-not-find-all-devi...

-Ron

RE: Netsight can not poll from switch behind firewall

Husam — Tue, 20 Oct 2015 14:10:00 GMT

same I can not poll any information.

Just to make it clear, I can discover all remote devices using default snmp also I can ping and telnet the device . But when I try to poll information for example interface summery, nothing is working.

please help!

regards,
Husam

RE: Netsight can not poll from switch behind firewall

Ronald_Dvorak — Tue, 20 Oct 2015 14:19:00 GMT

So in the overview the status is "Contact Established" in the 4th column...

Which Netsight software version is installed ?

-Ron

RE: Netsight can not poll from switch behind firewall

Husam — Tue, 20 Oct 2015 14:19:00 GMT

Thanks Ron for this great tip. it guided me to find the problem

Regards,
Husam

RE: Netsight can not poll from switch behind firewall

Bharathiraja__S — Tue, 20 Oct 2015 14:23:00 GMT

Hi Husam,

We have to check below details.

A) If you able to ping the remote site switches from netsight then create a new profile and check what happens. please find below steps to create a new profile.

1.Click or choose authorization/Device Access from the Tools menu.

2.Select the Profiles/Credentials tab in the authorization/Device Access window.

3.In the upper half of the tab, click Add Profile. The Add Profile window opens.

4.Type a name (up to 32 characters) for your new credential and select a SNMP version.
a.If you select SNMPv1 or SNMPv2, you can select credentials for Read, Write, and Max Access.
b.If you select SNMPv3, you can select credentials and security levels for Read, Write, and Max Access.
5.Click Apply.

 Please double check the remote site switches configuration to make sure netsight clients are responding to server over VPN.

C) In the remote site switches do you see any logs that is related to SNMP authentication failure or packet drops.

First let us find out where is the issue weather with netsight or remote side, based on that we will proceed further.

Thanks,
Suresh.B

RE: Netsight can not poll from switch behind firewall

Husam — Tue, 20 Oct 2015 17:28:00 GMT

Thank you all. it was my mistake. I did the discovery from remote station. The discovery go successfully because netsight do the discovery from remote station but the polling failed. I did not know this behavior of console . it was a route map issue related to my client server.

Thank you all.

RE: Netsight can not poll from switch behind firewall

Bharathiraja__S — Tue, 20 Oct 2015 19:47:00 GMT

Hi Husam,

Thats good to know its working now.

Thanks,
Suresh.B