Within the switch entity there are defined two VLANs - vlan1 and vlan2 vlan0 and vlan1. Vlan1 vLan0 is the one on which all of the numbered RJ45 sockets on the back belong to. Vlan2 vLan1 is the one on which the WAN socket resides. In order for it to be possible to move traffic outside the domain of any vLan, it is necessary for traffic to be manipulated by routing and filtering logic. In a DD-WRT device, you make this possible by assuring that any vLan that you've defined has port 8 port 5 as one of its member ports, thus tying the vLan to the router via trunking note that by extension you can completely isolate a network by not including port 8 port 5.
Further, you can declare that one of the vLans be the "default": when a packet flows through the router that is otherwise missing vLan tag information, it will behave as if it were a packet on the default vLan.
So at this point in the narrative, we have five physical ports mapped to two vLans, both of which connect to the routing system on port 8 port 5.
Vlan1 vLan0 is the default one, which includes the LAN ethernet ports. If we go no further, we have a programmable switch that can describe as many as 5 vlans, between which we can do sophisticated routing and filtering.
That gave me delta that I had to apply. Even when they are connected to the same network and are on the same subnet as their cabled neighbors. They should be displaying the same number. The mapping of port numbers to physically exposed external sockets varies according to model — see this page for details.
To understand how these components communicate; how they do it, what they do it with, what they to themselves and what they do to each other, we need to study the source code holy grail. This interface, which is not part of the switch, is available to routing logic just as eth0 and the vlans are. All movement or non-movement of packets between the virtual lans is determined by routing logic behind those devices which is normal linux routing , filtering , etc.
It is routed to the LAN side. View More Answers Related Questions. I wanted to do it with only one router. It reads about Mbps. Answered w ago The WAN port is the outside interface. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account.
You are commenting using your Facebook account. Notify me of new comments via email. There must be one for each vlan. The gui never adds these variables as of today. After you've set all your nvram variables you need to make sure to commit them so that they will be saved! Then you need to reboot to have your new configuration take effect. One might want to have such behavior when having unsorted firewall issues with a SIP operator.
Another use is to disable most of the wired LAN ports, leaving only the WAN port that connects you to the rest of the world. You can use your router as a WiFi access point and no one can plug in a network cable to get around your Radius authentication requested in the German forum.
Here on a mbit router we'll move port 4 to its own vlan The commands that are commented out should already be set by default. Firewall Policy. Back to top. Posted: Thu Oct 20, Post subject:. Thanks for the explanation, James.
Wish I'd known about this a few days ago when I trashed my dnsmasq config and couldn't log in! Is it correct to say that VLAN1 incorporates all 8 internal Ethernet ports since this is an 8 port router?
Posted: Fri Oct 21, Post subject:. Denna wrote:.
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