@sagar002100 Hello, nice set up you got there. I am not familiar with your non-Omada switch and access points, so my suggestion is mostly "generic"

Informational:

1. ER-605 (and ER-7206 and ER-8411), by default, allows InterVLAN routing. You don't need to have any other configuration

General interconnection tips:

1. Configure those VLANs in your ER-605 in addition to the default VLAN (APPLE-VLAN, ORANGE-VLAN, SURVEIILANCE). Assign these VLANs to all of your ER-605 LAN ports (or choose which one you want) or you can also create a custom profile that only carries the 3 new VLANs (excluding the default VLAN 1). For my instruction, i assume you are using the default "ALL" profile.
2. Configure your switch Ports 1, 2, and 3 as trunk ports that can carry the default VLAN 1 (as untagged), followed by APPLE-VLAN, ORANGE-VLAN, SURVEIILANCE all tagged. You will need to refer to your manual how to do that.
3. Configure your Access Points the same way (trunk ports, VLANs, etc). Make sure your SSID is attached to the respective VLAN. You will need to refer to your manual how to do that.
4. Configure your switch ports 4,5,6,7 as access port, with SURVEIILANCE VLAN. You will need to refer to your manual how to do that. If you don't, your VLAN 1 might start flowing here, Optionally, you can configure all unused ports as disabled,
5. You need to make sure that the VLAN IDs/Tags/etc. matched from ER-605, to your Switch, to the Access Point. The name does not need to match, but for your sanity, keep it the same (very close)

Policy Routing:

1. Create two policies in the Policy Routing for ER-605
2. The first one for APPLE VLAN(which should be tied to APPLE WIFI ), select WAN Port for ISP1
3. The second one for ORANGE VLAN (which should be tied to ORANGE WIFI), select WAN/LAN1 Port for ISP2

You can make this so much easier if you have the full omada-line of devices, then use Omada, since you only need to use one web interface to configure all of this. I understand that it is not always the case, but just letting you know that. The steps I gave are very high level (except may Steps 2 and 3 for Policy routing where I use the exact ports for ER-605 and also referring to trunk ports as "ALL"), meaning, you can follow the steps for any devices and the steps will be very similar, if not exactly the same.

Once you got it running, you may further want to change your network, some doesn't like their VLAN 1 going to switches, some do, so it will be up to you how to run your network.

Good hunting!

  @sagar002100 hey, i'm glad it worked. Great job combing thru the manual. If you didn't know about those concepts I covered here before, now you learned something new :).