SRX340 - Layer 2 and 3

Hi,

Here's the set up:

CPE --> NTE (SRX340) --> Downstream ISP - (dot1q tagged) --> Core --> Upstream ISP

Remit:

VLAN 10 Tagged direct from Core to CPE

VLAN 99 Tagged - Management to NTE (SRX340)

So, we only have a single interface at the Core and the NTE (SRX340). This means, if we are using the SRX340 at Layer 2 for VLAN 10 but layer 3 for VLAN 99, I need to be able to create a Sub-Interface at Layer 2 and a Sub-Interface at Layer 3.

So, as follows:

NTE (SRX340):

Interface ge-0/0/15 unit 10 vlan-id 10

Interface ge-0/0/15 unit 99 vlan-id 99

Interface ge-0/0/15 unit 99 family inet address xxx.xxx.xxx.xxx/30

Core to CPE - IP /30 at bothe ends - so, for VLAN 10 the SRX340 is just acting as basic layer 2 switch passing the traffic.

Is this even possible please?