Setup 3 subnets across fiber to new IDF (SRW2048) from MDF (existing SRW2024, SRW2024, SRW 2048)

Hello. First of all, please forgive my lack of knowledge as I am trying to seek the assistance of those who can help a fellow 'Go to IT Guy' at work.
I have three subnets that im trying to push to our new idf closet which we had built to acommodate these subnets (1=workstation 10.51.x.x, 2=wireless 10.50.x.x (WS2000, 6x AP300 motorola/symbol, and 3=production servers 10.60.x.x used for testing units (putting units into test).
We ran a 400ft 12 strand fiber armored with 4 term'd (i think its 3). but so far i have one (tx/rx) being used for our motorola/symbol ws2000 & ap300 accessports and our sec dvr camera system.
instead of purchasing an extra two switches for the idf closet and also purchasing an additional 4 mgbsx1 (2 per subnet? (10.51.x.x ) (10.60.x.x)), could it be possible to setup a vlan configuration for this? If so, how would i go about in doing this?
I kinda get the idea of setting the or a port to a specific vlan but just not sure how will this work across a single pair of fiber (rx/tx) from the mdf closet to a single unit switch (srw2048) in the idf closet and split the 3subnets (as an example: ports 1-8= vlan 1 (10.51.x.x) , ports 8-16 = vlan2 (10.50.x.x) , ports 17-47 = vlan 3 (10.60..x.x) )
mdf switches:
10.51.x.x / SRW2024
10.50.x.x / SRW2048
10.60.x.x / SRW2024
idf switch(es):
SRW2048
Connection type bewteen MDF and IDF: 400ft 12strand fiber
Any help is greatly appreciated and I thank you in advance.
sincerely,
jay

To carry multiple VLANs across a single LAN you use 802.1q tagged ethernet frames. On the SRW you would configure the connecting ports into trunk mode. Then you add all necessary VLANs which are supposed to cross through that link to the port. (If you only have a few VLANs and it varies where you need which VLAN exactly you can simply add all your existing VLANs to the trunk mode port).
On a trunk port all VLANs are tagged except the default management ("native") VLAN which remains untagged. With this setup both ends know to which VLAN any particular ethernet frames belongs to: all untagged frames (i.e. standard ethernet frames) belong to the default VLAN and all other frames are 802.1q tagged with the VLAN id. This way, both ends can run all VLANs and still keep traffic separated.
Of course, please keep in mind that the SRWs are only level 2 switches. Routing between different VLANs and between VLANs and other networks (i.e. the internet) must be handled on other devices. You cannot connect multiple VLANs to a non 802.1q VLAN router. If you need routing, you either need a 802.1q capable router or L3 switch or you need multiple routers and run separate cables for each VLAN to different routers.

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