<html><head></head><body><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div><div>OK, it was time to reboot my linux box and the MC7455 and start from scratch. Everything now works! :) Below is everything I did in case it helps someone else in the future. A few other notes: 1. I didn't mess with trying to get an IMS connection also setup. It's not required as far as the experience below indicates; see the "IMS reg state: No Srv" output of AT!GSTATUS? below. 2. Speedtest results: I used testmy.net and got 14.4Mbps down / 4.4Mbps up using Verizon Band 4 (AWS) with a single parabolic grid antenna on MAIN, with a very crappy antenna plugged into AUX. I have other LTE data devices and these speeds with the MC7455 are great. I rarely get anything faster, but have gotten as fast as 20Mbps down / 5Mbps up. 3. Next I will attempt to update the MC7455 firmware using the qmi-firmware-update tool, and hope I don't wind up bricking it. The device came with & is currently running 02.08.02.00_GENERIC, but I plan to upgrade to 02.24.05.06_00_VERIZON_002.034_000. 4. Not sure if the MTU for the host interface (set to 1500) should be decreased to match the "--wds-get-current-settings" (set to 1428 on Verizon). 5. My real intent is to connect this to a RaspberryPi (running ArchLinuxArm) and use your routing examples from this post to forward traffic between wireless and LTE. I'll need to write some configuration & monitoring scripts, and explore other options available in libqmi/qmicli. https://forums.whirlpool.net.au/forum-replies.cfm?t=2530290&p=18#r360 Really appreciate your help! ------------- Below I am using /dev/cdc-wdm2, but I'll try later to see if I get the same results with /dev/cdc-wdm1. My linux box is running ArchLinux kernel version 4.12.5, and libqmi/qmicli version 1.18.0 The MC7455 is in a PCI-E <-> USB adapter which is plugged into a powered hub which is plugged into my linux box over a USB2 interface. Plug it in: # dmesg [ 114.263226] usb 2-2.5: new high-speed USB device number 3 using xhci_hcd [ 114.356735] usb 2-2.5: config 1 has an invalid interface number: 8 but max is 4 [ 114.356741] usb 2-2.5: config 1 has an invalid interface number: 10 but max is 4 [ 114.356746] usb 2-2.5: config 1 has no interface number 1 [ 114.356749] usb 2-2.5: config 1 has no interface number 4 [ 114.465395] usbcore: registered new interface driver usbserial [ 114.465406] usbcore: registered new interface driver usbserial_generic [ 114.465414] usbserial: USB Serial support registered for generic [ 114.487762] usbcore: registered new interface driver qcserial [ 114.487779] usbserial: USB Serial support registered for Qualcomm USB modem [ 114.488799] qcserial 2-2.5:1.0: Qualcomm USB modem converter detected [ 114.488909] usb 2-2.5: Qualcomm USB modem converter now attached to ttyUSB0 [ 114.490175] qcserial 2-2.5:1.2: Qualcomm USB modem converter detected [ 114.490298] usb 2-2.5: Qualcomm USB modem converter now attached to ttyUSB1 [ 114.491551] qcserial 2-2.5:1.3: Qualcomm USB modem converter detected [ 114.491680] usb 2-2.5: Qualcomm USB modem converter now attached to ttyUSB2 [ 114.509901] usbcore: registered new interface driver cdc_wdm [ 114.513343] qmi_wwan 2-2.5:1.8: cdc-wdm1: USB WDM device [ 114.513828] qmi_wwan 2-2.5:1.8 wwan0: register 'qmi_wwan' at usb-0000:19:00.0-2.5, WWAN/QMI device, 0e:13:27:8a:57:7f [ 114.515098] qmi_wwan 2-2.5:1.10: cdc-wdm2: USB WDM device [ 114.515547] qmi_wwan 2-2.5:1.10 wwan1: register 'qmi_wwan' at usb-0000:19:00.0-2.5, WWAN/QMI device, 0e:13:27:8a:57:7f [ 114.515565] usbcore: registered new interface driver qmi_wwan [ 114.517467] qmi_wwan 2-2.5:1.10 wwp25s0u2u5i10: renamed from wwan1 [ 114.536948] qmi_wwan 2-2.5:1.8 wwp25s0u2u5i8: renamed from wwan0 # ls /dev/cdc* /dev/cdc-wdm1 /dev/cdc-wdm2 # qmicli -p -d /dev/cdc-wdm2 --wda-get-data-format [/dev/cdc-wdm2] Successfully got data format QoS flow header: no Link layer protocol: 'raw-ip' Uplink data aggregation protocol: 'disabled' Downlink data aggregation protocol: 'disabled' NDP signature: '0' Uplink data aggregation max size: '0' Downlink data aggregation max size: '0' # ip link 4: wwp25s0u2u5i8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000 link/ether 0e:13:27:8a:57:7f brd ff:ff:ff:ff:ff:ff 5: wwp25s0u2u5i10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000 link/ether 0e:13:27:8a:57:7f brd ff:ff:ff:ff:ff:ff # ip link set wwp25s0u2u5i10 down # qmicli -p -d /dev/cdc-wdm2 --set-expected-data-format=raw-ip [/dev/cdc-wdm2] expected data format set to: raw-ip # ip link set wwp25s0u2u5i10 up # ip link 5: wwp25s0u2u5i10: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN mode DEFAULT group default qlen 1000 link/none <div> </div><div> </div><div>// I need to learn more about available options: right </div><div>// now just setting up an IPv4 connection.</div># qmicli -p -d /dev/cdc-wdm2 --wds-start-network="apn=VZWINTERNET,ip-type=4" --device-open-net="net-raw-ip|net-no-qos-header" --device-open-sync --client-no-release-cid [/dev/cdc-wdm2] Network started Packet data handle: '62780608' [/dev/cdc-wdm2] Client ID not released: Service: 'wds' CID: '36' # qmicli -p -d /dev/cdc-wdm2 --wds-get-packet-service-status [/dev/cdc-wdm2] Connection status: 'connected' # qmicli -p -d /dev/cdc-wdm2 --wds-get-current-settings [/dev/cdc-wdm2] Current settings retrieved: IP Family: IPv4 IPv4 address: 100.112.19.126 IPv4 subnet mask: 255.255.255.252 IPv4 gateway address: 100.112.19.125 IPv4 primary DNS: 198.224.172.135 IPv4 secondary DNS: 198.224.175.135 MTU: 1428 Domains: none # ip addr add wwp25s0u2u5i10 dev wwp25s0u2u5i10 # ip addr 5: wwp25s0u2u5i10: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000 link/none inet 100.112.19.126/32 scope global wwp25s0u2u5i10 valid_lft forever preferred_lft forever # ip route add default dev wwp25s0u2u5i10 # ip route default dev wwp25s0u2u5i10 scope link # qmicli -p -d /dev/cdc-wdm2 --wds-get-packet-service-status [/dev/cdc-wdm2] Connection status: 'connected' // I did ping too quickly and it failed; even though the IP // address is already assigned, doesn't look like the PDN // is truly established with the SGW / PGW yet? # ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. ^C --- 8.8.8.8 ping statistics --- 6 packets transmitted, 0 received, 100% packet loss, time 5077ms # qmicli -p -d /dev/cdc-wdm2 --wds-get-packet-service-status [/dev/cdc-wdm2] Connection status: 'connected' // I waited another 30 seconds and did another ping and // this time it was successful. # ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_seq=1 ttl=54 time=299 ms 64 bytes from 8.8.8.8: icmp_seq=2 ttl=54 time=113 ms 64 bytes from 8.8.8.8: icmp_seq=3 ttl=54 time=121 ms 64 bytes from 8.8.8.8: icmp_seq=4 ttl=54 time=118 ms 64 bytes from 8.8.8.8: icmp_seq=5 ttl=54 time=110 ms ^C --- 8.8.8.8 ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 4004ms rtt min/avg/max/mdev = 110.300/152.452/299.193/73.468 ms # qmicli -p -d /dev/cdc-wdm2 --nas-get-signal-info [/dev/cdc-wdm2] Successfully got signal info LTE: RSSI: '-69 dBm' RSRQ: '-13 dB' RSRP: '-102 dBm' SNR: '9.8 dB' # minicom -D /dev/ttyUSB2 ATI Manufacturer: Sierra Wireless, Incorporated Model: MC7455 Revision: SWI9X30C_02.08.02.00 r5428 CARMD-EV-FRMWR2 2016/01/06 20:38:53 ... blah blah ... AT!GSTATUS? Current Time: 5109 Temperature: 26 Reset Counter: 1 Mode: ONLINE System mode: LTE PS state: Attached LTE band: B4 LTE bw: 20 MHz LTE Rx chan: 2050 LTE Tx chan: 20050 LTE CA state: NOT ASSIGNED EMM state: Registered Normal Service RRC state: RRC Idle IMS reg state: No Srv PCC RxM RSSI: -69 RSRP (dBm): -100 PCC RxD RSSI: -90 RSRP (dBm): -132 Tx Power: 0 TAC: 1A02 (6658) RSRQ (dB): -11.5 Cell ID: 0067A00C (6791180) SINR (dB): 9.4 <div>It's been connected for at least an hour, and the connection hasn't dropped, which is great!</div><div> </div> </div></div></div></body></html>