AT&T Fiber - Zyxel Armor Z2 - ARRIS BGW210 Configuration Help

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello FrustratedUser here,

As you can see from the title my current setup is the AT&T provided RG connected to the ONT and I'd like to put my Armor Z2 behind that router. My Armor Z2 is currently running OpenWRT 18.06.2.

I've connect the WAN port of my Armor Z2 to an Ethernet port on the back of the ARRIS router but I get no internet connection through the Armor Z2. I've looked around for the correct way to configure OpenWRT but it seems everyone else's is able to configure itself automatically.

Anyone have any experience with this?

2

Without seeing any of your configs...

I would make sure that the OpenWrt LAN and LAN on the Z2 are numbered differently. Basically, make sure they're not both 192.168.1.0/24.

3

It's the default fresh out of the box configs. They are on different subnets, and OpenWRT is installed on the Z2. I'll dump the configs and post them soon.

4

This is a Zyxel Armor Z2 connected to an Arris BGW210 which is connected to the ONG. The stock Zyxel firmware works fine but OpenWRT does not.
Here are my configs.

/etc/config/system:


config system
	option hostname 'OpenWrt'
	option timezone 'UTC'
	option ttylogin '0'
	option log_size '64'
	option urandom_seed '0'

config timeserver 'ntp'
	option enabled '1'
	option enable_server '0'
	list server '0.openwrt.pool.ntp.org'
	list server '1.openwrt.pool.ntp.org'
	list server '2.openwrt.pool.ntp.org'
	list server '3.openwrt.pool.ntp.org'

config led 'led_wlan2g'
	option name 'WLAN2G'
	option sysfs 'nbg6817:amber:wifi2g'
	option trigger 'phy1tpt'

config led 'led_wlan5g'
	option name 'WLAN5G'
	option sysfs 'nbg6817:amber:wifi5g'
	option trigger 'phy0tpt'

config led 'led_wan'
	option name 'WAN'
	option sysfs 'nbg6817:white:internet'
	option trigger 'netdev'
	option mode 'link tx rx'
	option dev 'eth1'

/etc/config/network:


config interface 'loopback'
	option ifname 'lo'
	option proto 'static'
	option ipaddr '127.0.0.1'
	option netmask '255.0.0.0'

config globals 'globals'
	option ula_prefix 'fded:7cc2:0e3c::/48'

config interface 'lan'
	option type 'bridge'
	option ifname 'eth1.1'
	option proto 'static'
	option ipaddr '192.168.1.1'
	option netmask '255.255.255.0'
	option ip6assign '60'

config device 'lan_dev'
	option name 'eth1.1'
	option macaddr '8c:59:73:fe:26:e2'

config interface 'wan'
	option ifname 'eth0.2'
	option proto 'dhcp'

config device 'wan_dev'
	option name 'eth0.2'
	option macaddr '8c:59:73:fe:26:e3'

config interface 'wan6'
	option ifname 'eth0.2'
	option proto 'dhcpv6'

config switch
	option name 'switch0'
	option reset '1'
	option enable_vlan '1'

config switch_vlan
	option device 'switch0'
	option vlan '1'
	option ports '1 2 3 4 6t'

config switch_vlan
	option device 'switch0'
	option vlan '2'
	option ports '5 0t'
5

It looks fine. It does appear you changed the MAC addresses.

  • Did you change any firewall settings?
  • Please show the results of the command ifconifg eth0.2
  • I noticed that your LAN is eth1.1, did you make edits to any interfaces?
6

Here is the results for eth0.2:


root@OpenWrt:~# ifconfig eth0.2
eth0.2    Link encap:Ethernet  HWaddr 8C:59:73:FE:26:E3
          inet addr:192.168.1.4  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::8e59:73ff:fefe:26e3/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1485 errors:0 dropped:182 overruns:0 frame:0
          TX packets:677 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:263696 (257.5 KiB)  TX bytes:149434 (145.9 KiB)

What confuses me is that it does get an IP address and the stock Zyxel firmware works perfectly fine when I've tried it.

I've made no changes to any of the interfaces or firewall settings. I have my computer connected to LAN1 on the router in order to SSH into it.

7

Do you need a specific VLAN setup?

8

This is why you get no Internet connection. You need to renumber one of your networks. WAN and LAN cannot both be 192.168.1.0/24.

9

Wow I could have sworn I had configured that to 192.168.0.0/24. I will try that again when I get home.

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10

I see what happened, when I attempt to change the subnet, through LUCI or SSH, the changes do not take effect and revert to the defaults. I'm on 18.06.2 if that helps.

11

After the failure (to acknowledge the changed network settings in time), you are being offered to apply the changes anyways/ unchecked, that is always an option.

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