Switched Ports

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Revision as of 11:46, 17 January 2006 (edit)
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(The Port Numbering Explained)
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The variable ''vlan0ports'' equals to the natted LAN side. Correspondently ''vlan1ports'' refers to the WAN side, outside the router's internal NAT addressing scheme. The variable ''vlan0ports'' equals to the natted LAN side. Correspondently ''vlan1ports'' refers to the WAN side, outside the router's internal NAT addressing scheme.
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Revision as of 18:00, 15 May 2006

With an older router, you can make for instance ports 3 and 4 to reside outside the router's NAT. Devices attached to these ports will request an own IP address from the ISP instead of getting a private IP address from your WRT. One might want to have such behaviour when having unsorted firewall issues with a SIP operator.

nvram set vlan0ports="1 2 5*" 
nvram set vlan1ports="0 3 4 5" 
nvram commit 
reboot 

According to the user reports, this is confirmed to work at least with a WRT54GSv1.1 after power cycling the router.

If you want to recover the default settings, write the following within ssh session:

nvram set vlan0ports="1 2 3 4 5*" 
nvram set vlan1ports="0 5" 
nvram commit 
reboot

The Port Numbering Explained

The numbers mean the following:

  • WRT54G v4 & WRT54GS v3
0  = port 4
1  = port 3
2  = port 2
3  = port 1
4  = WAN
5  = WLAN
5* = WLAN tagged
  • WRT54G v2/v3 & WRT54GS v1/v2
0  = WAN
1  = port 1
2  = port 2
3  = port 3
4  = port 4
5  = WLAN
5* = WLAN tagged

The variable vlan0ports equals to the natted LAN side. Correspondently vlan1ports refers to the WAN side, outside the router's internal NAT addressing scheme.