Ah! In that case you don't want VLANs! The concept is similar but on a WAN link they are referred to as Virtual Circuits. There are a couple of concepts that may get a little complex though, dependeing upon what you mean by keeping the traffic separate!
You could use frame relay for the link type, and create two DLCIs and run them on separate subinterfaces. The details are well documented on configuring frame relay, so you can do something like
int s0.100 point-to-point
Desc Voice Traffic
frame-relay interface-DLCI 100
ip add a.b.c.d m.a.s.k
int s0.101 point-to-point
Desc Data Traffic
frame-relay interface-DLCI 101
ip add e.f.g.h m.a.s.k
And similar at the other end. Please note I have typed this from memory, so there may be the odd typo!
That will give two logical circuits across the WAN, but if you just then include everything in the same routing process, you will not have segregation of traffic. Running two instances of OSPF and putting voice interfaces in one and data in the other will give a degree of separation, but will not guarantee it - both processes will add routing information to the same routing table. If you *really* want full separation you will need to look at VRF-Lite, which I don't think is available on the 1700.
If bandwidth management is the aim, you don't need channels! This is where clear requirements are good.
If the whole aim is to manage bandwidth all you need do (says he flippantly) is look at the options with QoS. Separate circuits give "separation" (a little moot when you have them ending on the same routers.
QoS can be used in conjunction with circuits to do both bandwidth management.
The first thing you need to decide is exactly what behaviour you want. You can have multiple permutations of guaranteed minimum, maximum and prioritisation. If one type of traffic is not using its allocation, do you want the other to be able to use it?
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...