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Can you have multiple VLANs on the same subnet?
If the addresses are all different it is possible to route traffic using a very large number of rules which don’t correspond to the actual subnet configuration and will confuse anyone who inherits this from you. However, it is completely permissible to use the same RFC1918 subnets on different physical networks.
How do I connect to multiple VLANs?
The simplest way to enable routing between the two VLANs to simply connect an additional port from each VLAN into a Router. The Router doesn’t know that it has two connections to the same switch — nor does it need to. The Router operates like normal when routing packets between two networks.
How do I allow multiple VLANs on the trunk port?
By default, a trunk interface can carry traffic for all VLANs. To specify that only certain VLANs are allowed on the specified trunk, use the switchport trunk allowed vlan command. If you do not configure this parameter, the trunk port uses the default VLAN as the native VLAN ID.
Do you use VLAN 3 or 4 for Pat NATting?
Assuming you want use VLAN 3 & VLAN 4 as your LAN network and want to configure pat natting for internet access, and assuming VLAN 1 is used for DMZ network for hosting an application which needs static NAT. Configuration of subinterface in router.
Can a DHCP router work with multiple VLANs?
I’ve set up a network with 4 VLAN, 3 VLAN configured PAT on it and 1 VLAN configured STATIC NAT. The router is acting as the DHCP server. Outside of my router I have another router acting as “the internet” with an ip address of 172.16.10.1 /24.
Can you have multiple VLANs on port 4 / 38?
For port 4/38, yes – it will be in trunk mode. Vlans 699,712,751,787,987,3890 will be allowed on this trunk. You can verify if they are forwarding, with the show int trunk command.
How is Nat defined on a router with multiple VLANs?
This is where most people run into trouble. They use the physical interface instead of the sub-interfaces. Where sub-interfaces are used for vlans, these sub-interfaces must be defined and used as the NAT inside interfaces. See below. Router (config)#int f0/0.10