Obtain address for br1 via DHCP

[cybergibbons]

I currently have my RT-AC66U being used as an AP only on a secure network and a guest network, using VLANs and an external router/firewall.

The VLANs are setup as follows:

root# robocfg show
VLANs: BCM53115 enabled mac_check mac_hash
   1: vlan1: 0t 1 2 8t
   2: vlan2: 8t
   4: vlan4: 0t 4 8t

The trunked VLANs come in on the WAN port (0). vlan1 is the secure network, vlan2 the guest network.

There are two additional wireless SSIDs for the guest network - wl0.1 and wl1.1. These are bridged to the respective VLANS:

root# brctl show
bridge name	bridge id		STP enabled	interfaces
br0		8000.74d02b88acd8	no		vlan1
							eth1
							eth2
br1		8000.74d02b88acd8	no		vlan4
							wl0.1
							wl1.1

br0 gets it's IP address by DHCP and is assigned it.

However, br1 doesn't get assigned an IP address.

Running udhcpc successfully gets an IP, but the IP address of the interface does not change:

root# udhcpc -i br1
udhcpc (v1.20.2) started
Sending discover...
Sending select for 192.168.0.2...
Lease of 192.168.0.2 obtained, lease time 7200

oot# ifconfig br1
br1        Link encap:Ethernet  HWaddr 74:D0:2B:88:AC:D8  
           inet addr:192.168.0.253  Bcast:192.168.0.255  Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:585 errors:0 dropped:0 overruns:0 frame:0
           TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0 
           RX bytes:106085 (103.5 KiB)  TX bytes:1368 (1.3 KiB)

The service-start script that sets this all up is:

#!/bin/sh

robocfg vlan 1 ports "0t 1 2 8t"
robocfg vlan 4 ports "0t 4 8t"

vconfig add eth0 4

ifconfig vlan4 up

brctl addbr br1
brctl delif br0 wl0.1
brctl delif br0 wl1.1
brctl addif br1 vlan4
brctl addif br1 wl0.1
brctl addif br1 wl1.1

ifconfig br1 192.168.0.253 netmask 255.255.255.0
ifconfig br1 up

How do I get br1 to get an address by DHCP?

 

[coldwizard]

This is a work in progress...
I cannot get the WiFi to work with security enabled, but crudely can get DHCP to work on br1.

Anyway, here are my scripts.

First file is /jffs/scripts/services-start
The second file is /jffs/scripts/udhcpc_brX

I have zipped them since the code tag triggers blocked access.

 

[cybergibbons]

Thanks - that appears to do the trick.