vpn - gre tunnel - continuous pings require to keep tcp connection alive
Have a situation wherby a server and client exchange data on tcp ports 3299 (client) and > 1023 (server). They are hosted by different service providers with a gre tunnel serviced by static routing running between the two provider's border routers.
The tunnel is shared with other clients but only one complains of timeouts after approx 5 mins.To counteract this the application support people at the server end run continuous pings to the client which allows the traffic flow between server and client as normal.
The tunnel config is as follows
ip address 193.95.x.x 255.255.255.252
no ip directed-broadcast
no ip route-cache cef
tunnel source Loopback0
tunnel destination 195.182.x.x
I wonder if anyone else has had experience of a similar fault on a gre tunnel or
Re: vpn - gre tunnel - continuous pings require to keep tcp conn
GRE tunnels are usually used in combination with a dynamic routing protocol that keeps the tunnel up and active. If you are using static routes there is no traffic to keep the tunnels up when the applications are not transmitting.
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