I have a Juniper EX switch, which receives 3 subnets (192.168.1~3.0/24) from a untagged port of upstream switch (I don't have access to that switch). Is it possible to configure the EX switch to put different subnets onto different VLANs ?
I have hosts on my side on all 3 subnets under my switch, they are all connected to access port of VLAN 10. (And the upstream port is also configured as access port VLAN 10)
I would like to have, for instance, VLAN 11 that contains only 192.168.1.0/24 traffic, VLAN 12 that contains only 192.168.2.0/24 traffic, etc. I guess this requires the switch to act as a gateway? I'm not sure how to configure it.
ps. My EX switch is not the gateway of these 3 subnets.