I have a need to transport low speed (rates of 19,200 bps or less) HDLC frames over IP. I’m only interested in layer 2 transport. I’ve looked at briefly at L2TPv3 but this seems only to be supported on high-end hardware. CEoIP also seems overkill for my needs.
I’m thinking more of WIC-1T single serial port WAN interface cards in a 2811. I know these are designed to implement circuits over a serial WAN but is it possible in some way to configure them to address my need and convey HDLC over IP?
Failing the 2811 what other low cost Cisco options are there?
Possible GRE tunnel . This will encapsulate into ip over the tunnel or maybe a pseudo-wire (ATOM)
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Thanks Paul, I'll have a look at GRE.
I was thinking perhaps STUN might be the option that would work best with older hardware and IOS combinations. STUN basic without local-ack look interesting but I'd appreicate some thoughts from anyone who's done something like this.
OK, the cheapest option worked out to be a couple of 2621XM routers with WIC 1T serial cards.
The STUN protocol looked the simplest choice.