I have a Netgear R7800 with the latest OpenWRT version. I am using an Ubuntu 22.04 LTS laptop to connect to the router.
I have a PCIe to USB adapter that has a Sierra MC7455 modem installed in it.
It's the same as this one:
I tried the directions at:
and:
https://openwrt.org/docs/guide-user/network/wan/wwan/modemmanager.
All the packages are installed.
"ls -l /dev/cdc-wdm0" shows:
crw------- 1 root root 180, 176 Apr 7 19:20 /dev/cdc-wdm0
"lsusb" shows:
Bus 003 Device 002: ID 1199:9071 Sierra Wireless, Incorporated Sierra Wireless MC7455 Qualcomm® Snapdragon™ X7 LTE-A
Bus 002 Device 001: ID 1d6b:0003 Linux 5.10.161 xhci-hcd xHCI Host Controller
Bus 004 Device 001: ID 1d6b:0003 Linux 5.10.161 xhci-hcd xHCI Host Controller
Bus 001 Device 001: ID 1d6b:0002 Linux 5.10.161 xhci-hcd xHCI Host Controller
Bus 003 Device 001: ID 1d6b:0002 Linux 5.10.161 xhci-hcd xHCI Host Controller
"cat /sys/kernel/debug/usb/devices" shows:
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.10
S: Manufacturer=Linux 5.10.161 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=xhci-hcd.0.auto
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1
P: Vendor=1d6b ProdID=0003 Rev= 5.10
S: Manufacturer=Linux 5.10.161 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=xhci-hcd.0.auto
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.10
S: Manufacturer=Linux 5.10.161 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=xhci-hcd.1.auto
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
D: Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1199 ProdID=9071 Rev= 0.06
S: Manufacturer=Sierra Wireless, Incorporated
S: Product=Sierra Wireless MC7455 Qualcomm® Snapdragon™ X7 LTE-A
S: SerialNumber=LQ01624243021030
C:* #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=qcserial
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=qcserial
E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=qcserial
E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 8 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
E: Ad=87(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#=10 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
E: Ad=89(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
E: Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
T: Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1
P: Vendor=1d6b ProdID=0003 Rev= 5.10
S: Manufacturer=Linux 5.10.161 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=xhci-hcd.1.auto
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
I tried using Luci to create a new interface and to place it into the firewall area as described below:
Write wwan as the name of the interface and make it cover the wwan0 interface. Choose DHCP client as the protocol.
Firewall configuration
The only thing that is left - Add wwan interface to WAN zone
Using LUCI:
-
go to Network → Firewall, scroll down to wan and click the Edit button
-
add a checkmark to the wwan box under Covered networks heading, click Save & Apply
Instead of the recommended name "wwan" for the interface, I used "wwan0".
I still cannot get an internet connection using my US Mobile data SIM. I had been using this SIM in my phone and it works fine there. I read about a USB2/USB3 problem. I'm not sure if it applies to me:
Is there something else I can try? Thanks for any advice.