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Can't get working Cisco STUN (Serial tunneling) in LAN
MessagePosté le: 25/11/2017 12:53:15 Répondre en citant
Johneames

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Inscrit le: 06 Oct 2017
Messages: 86




Hi,

I am trying to run very simple thing, Cisco STUN (serial tunnelling). I run on 2 Cisco 2811 with IOS 15.x AES edition. They are plugged in the same LAN (192.168.1.0/24) via unmanaged switch and uses FE0/0 for LAN connectivity. FE0/1 ports are not used. HWIC-1T modules installed to enable serial communications. Cisco DCE and DTE cables are plugged in and interfaces shows up / up statuses, both blinks green when COM port is opened at PC side (DCE cable). When I working on it, I followed to this Cisco guide: STUN Basic with Multiple Tunnels and can't get it working.

Symptoms: no serial comms, no packet count, no debug packets. Looks like there is no connectivity between STUN peers. Of course, the rest services work fine, routers can ping each other in 192.168.1.x network.

All looks very simple in Cisco's sample, but they are omitted Ethernet settings, including FE0/0. I am not networking guru and can't imagine that must be there. Particularly, I am not sure about FE0/0 settings in case of IP address and mask. Also I am not sure about another network set for loopback adapters or not (192.168.168.0/24 for loopback instead of 192.168.1.0/24 for FE0/0 port) . Also, I don't have any NAT enabled as well as static routes. I only can suppose, that 192.168.162.143 peer can't reach 192.168.162.144 peer via LAN.

Please help.

Thanks!

I didn't find the right solution from the Internet.

References
https://supportforums.cisco.com/t5/other-network-infrastructure/can-t-get-w…


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Can't get working Cisco STUN (Serial tunneling) in LAN
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