Eth1 missing on TP-Link AC1750 v5

Installing and Using OpenWrt
1

I downloaded "http://downloads.openwrt.org/releases/19.07.7/targets/ath79/generic/openwrt-19.07.7-ath79-generic-tplink_archer-c7-v5-squashfs-factory.bin" and installed on TP-Link AC1750 v5.

Multiple sources suggest (including the device wiki @ https://openwrt.org/toh/tp-link/archer-c5-c7-wdr7500#port_map) that there should be 7 ports on the switch with eth1 connected to port 0. LUCI shows 6 ports including eth0 but no eth1.

Config information follows (I've made no changes, these are as-installed):

root@OpenWrt:~# cat /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 'fd9e:db77:b047::/48'

config interface 'lan'
        option type 'bridge'
        option ifname 'eth0.1'
        option proto 'static'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option ipaddr '192.168.10.1'

config interface 'wan'
        option ifname 'eth0.2'
        option proto 'static'
        option netmask '255.255.255.0'
        list dns '8.8.8.8'
        list dns '8.8.4.4'
        option ipaddr '192.168.1.202'
        option gateway '192.168.1.1'
        option type 'bridge'

config device 'wan_eth0_2_dev'
        option name 'eth0.2'
        option macaddr 'd8:07:b6:74:22:45'

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 '2 3 4 5 0t'

config switch_vlan
        option device 'switch0'
        option vlan '2'
        option ports '1 0t'

root@OpenWrt:~# ls -l /sys/class/net

lrwxrwxrwx    1 root     root             0 Aug  5 07:23 br-lan -> ../../devices/virtual/net/br-lan
lrwxrwxrwx    1 root     root             0 Aug  5 07:23 br-wan -> ../../devices/virtual/net/br-wan
lrwxrwxrwx    1 root     root             0 Dec 31  1969 eth0 -> ../../devices/platform/ahb/19000000.eth/net/eth0
lrwxrwxrwx    1 root     root             0 Aug  5 07:23 eth0.1 -> ../../devices/virtual/net/eth0.1
lrwxrwxrwx    1 root     root             0 Aug  5 07:23 eth0.2 -> ../../devices/virtual/net/eth0.2
lrwxrwxrwx    1 root     root             0 Dec 31  1969 lo -> ../../devices/virtual/net/lo
lrwxrwxrwx    1 root     root             0 Aug  5 07:29 wlan0 -> ../../devices/pci0000:00/0000:00:00.0/net/wlan0
lrwxrwxrwx    1 root     root             0 Aug  5 07:29 wlan1 -> ../../devices/platform/ahb/18100000.wmac/net/wlan1

Google searches also show boot logs for other AC1750 devices where eth1 device initialized. I looked at the logs for mine ... it shows eth0 initializing, but no eth1.

Shouldn't there be an eth1 device for this router??

Thanks in advance! I'm not a linux guru so please forgive my lack of understanding...

2

There is something strange here. The config you posted is the default network configuration of an Archer A7 v5, but the link above points to an image for Archer C7. I am sure that you couldn’t successfully flash an A7 with the image for C7 (due to major differences in the flash layout), so please check again the model of your router and the name of image file you used.

1 Like
3

Thank you for the fast response. The link I used is (I got this from the "downloads" section of the browser I used so I'm sure this is correct):

"https://downloads.openwrt.org/releases/19.07.7/targets/ath79/generic/openwrt-19.07.7-ath79-generic-tplink_archer-c7-v5-squashfs-factory.bin"

And the label on the bottom of the router is:

image

Not sure if the image pasted correctly, but the label says:

"Model: Archer CT(US) Ver 5.6"

Thanks for your help.

4

Correction!. The label says:

"Model: Archer C7(US) Ver 5.6"

5

OK, it’s really an Archer C7, but the hardware version of your device is 5.6, which is slightly different from the v5 (described in the wiki). Here is the factory bootlog of the device, and as you can see, there is only eth0 available. So it is absolutely normal to see only eth0 after flashing the router with OpenWrt.

6

Thanks again for quick response. One last (perhaps non-intelligent) question:

Are you saying eth1 device exists in the hardware, but OpenWrt does not support use of eth1 device?

7

Just found this ... sounds like V5 hardware only has one port. Uhg. Thanks for your help!

8

If your problem is solved, please consider marking this topic as [Solved]. See How to mark a topic as [Solved] for a short how-to.

9

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