Hi,
We're going to shortly run into a situation where we will need to encapsulate a CVLAN into an SVLAN, where both C & S VLANs are tagged on the same physical interface, almost like some form of loopback.
We've been looking at devices that will give us the most flexibility and currently we are looking at implementing a Juniper EX series switch for this task. From what I've seen it supports selective Q in Q which will allow us to pick and choose ingress CVLANs from ports to encapsulate into a specific SVLAN.
However, all of the documentation I'm finding gives examples where the CVLAN and SVLAN are on separate switch ports.
As I don't have any hardware yet or other ways to simulate, I'm trying to determine if the Juniper hardware will be capable of doing this - I'm trying to avoid buying it and then finding out it won't do it.
I've come across things like this which leads me to think it can be done, but it appears quite vague to me for my particular requirement. I get that an interface can have C and SVLANs on it, but will JUNOS allow me to process ingress and egress traffic on the same interface?
Note: Starting with Junos OS 14.1X53-D30, you can configure the same interface to be an S-VLAN/NNI interface and a C-VLAN/UNI interface. This means that the same physical interface can transmit single-tagged and double-tagged frames simultaneously. This allows you maximum flexibility in your network topology and lets you maximize the use of your interfaces.
Has anyone attempted something similar, even with different vendor hardware? Is this a fairly standard thing that should be well supported?
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