Dropped connections

Issues related to configuring your network
Post Reply
joey_4m
Posts: 23
Joined: 2014/10/13 20:03:50

Dropped connections

Post by joey_4m » 2015/03/20 15:19:22

I would like to aid for the following problem.
We have a VPN, and I set up a vpn in the notebook of a DBA so he could access other branches.
The problem is as follows:

He performs his VPN, and then closes the connection via SSH it accesses one of our servers here in the array and use this server as a bridge to connect to the branch server.
That is, it connects to a server here and here connects in a branch database server.
But suddenly, the connection drops, and we can no longer get a response by the command "ping".
The strange thing is that the VPN server responds regular ping, only the database server that is on the network that loses connection, but on the local network it responds ping.
This database server has two network cards with the same ip range just changing the final.
Eg 192.168.0.60 192.168.0.61 and the other plate

Where 1 card is used to point the system database and the other plate is used for data replication between Mother and Branch.
Wanted to know what could be causing this decline. And why the problem only occurs when he does that bridge to connect.
Would anyone tell what could be? Some timeout that occurs on the server, or something?

I thank you.

gerald_clark
Posts: 10642
Joined: 2005/08/05 15:19:54
Location: Northern Illinois, USA

Re: Dropped connections

Post by gerald_clark » 2015/03/20 15:23:58

You should not have 2 network cards in the same subnet.

joey_4m
Posts: 23
Joined: 2014/10/13 20:03:50

Re: Dropped connections

Post by joey_4m » 2015/03/20 15:40:17

gerald_clark wrote:You should not have 2 network cards in the same subnet.
Just as an example.

The ip's set are:

Board p3p1:

ip: 192.168.128.60
mask: 255.255.255.0
Gateway: 192.168.128.1

p3p2 board

ip: 192.168.128.61
mask: 255.255.255.0
Gateway: 192.168.128.1

What can happen if I use these settings? There are problems even using ip's different but in the same range? That would be the reason for these falls? Because when I restart the server back up and running normally !!!

gerald_clark
Posts: 10642
Joined: 2005/08/05 15:19:54
Location: Northern Illinois, USA

Re: Dropped connections

Post by gerald_clark » 2015/03/20 15:49:02

Since both NICs are in the same subnet, response packets may not go out on the same interface that the original traffic came in on.
Why do you think you need to do this?

joey_4m
Posts: 23
Joined: 2014/10/13 20:03:50

Re: Dropped connections

Post by joey_4m » 2015/03/20 16:01:22

gerald_clark wrote:Since both NICs are in the same subnet, response packets may not go out on the same interface that the original traffic came in on.
Why do you think you need to do this?

Why will work as follows:

Ip with final 60 will be what the system will see to get database information.
ip with final 61 will be used only for data replication between branch and mother.

So with 2 plates on the same subnet

Post Reply