DLSW+ on frame relay

[fujin.huang]

Hi,

I'm confused with different type of peers: TCP, Direct, and FST. How do they work together?

I have seen configurations with two router over frame relay, both router uses both TCP and Direct frame-relay peer configuration, why it is needed to use both encapsulation methods (TCP and Direct Frame-relay)? is it enough with one method?

Thanks.

Fujin

[millerv]

The choice of encapsulation methods is usually governed by how reliable you think the transport method is.

You can mix and match Direct or TCP in your network.

[fujin.huang]

If I mix the encapsulation methods, what's really going on in the network? which encapsulation method is chosen?

Thanks.

[millerv]

encapsulation methods are configured on a per peer basis. I can configure one dlsw peer to have tcp encapsulation, one to have FST, and a third to be direct.

the points to consider are:

1. tcp is the most reliable, and has the most overhead.

2. mixing modes in a large network can drive you crazy at 2 in the morning.