constant ping or keepalive?

[volleyman]

I have a 2811 router using a 3g wireless wic on the AT&T network for internet connection. its then connected as a site-to-site vpn.

this works well except that it requires traffic from the remote side to keep the connection up as the AT&T connection uses a dynamic IP address. Does anyone know how to generate a constant ping or any other method of keeping that connection alive from the router?

the devices connected to it are not PCs or servers that can run a constant ping.

Zane D.
Systems Admin

 

[pbundschuh]

What I've done is specify a NTP server on the other side "ntp server x.x.x.x", which halfway regularly sends ntp traffic over that link. There might be a way to do this with keepalives too. Another way might be a TCL script that sends pings. While I'm at it, you could enable CDP over it, that sends regular traffic, but to a broadcast address.

 

[burtsbees]

Kiwi syslog daemon has built-in keepalive functionality also...

What sort of equipment do you have on the remote LAN?

Burt

 

[Minue]

Hello
You could do the below ping.But this isn't very clean.There must be a way to do this within some VPN command.Try asking the guys on the (VPN) Forum.
ping xxx.xxx.xxx.xxx repeat 2147483647
Regards

 

[robertjo24]

Most of the external wireless devices from the carriers usually have a keepalive function built into the configuration of the wireless device. Have you looked at the wireless WIC configuration for the keepalive function?