Warning: This manual is moved to https://help.mikrotik.com/docs/display/ROS/LTE
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Applies to RouterOS:v6+,v5.12+
- 2LTE Client
- 2.4User Info command
- 6Tips and Tricks
- 7Troubleshooting
Summary
Package:system
Support for Direct-IP mode type cards only. MBIM support is available in RouterOS v7 releases and MBIM driver is loaded automatically. If modem is not recognized in RouterOS v6 - Please test it in v7 releases before asking for support in RouterOS v6.
To enable access via a PPP interface instead of a LTE Interface, change direct IP mode with /port firmware set ignore-directip-modem=yes command and a reboot. Note that using PPP emulation mode you may not get the same throughput speeds as using the LTE interface emulation type.
Warning: In RouterOS v7 ignore-direct-modem parameter is moved under /system routerboard modem menu
LTE Client
Sub-menu:/interface lte
Properties
| Property | Description | |
|---|---|---|
| allow-roaming (yes | no; Default: no) | Enable data roaming for connecting to other countries) | Frequency band used in communication LTE Bands and bandwidths |
| comment (string; Default: ') | Descriptive name of an item | |
| disabled (yes | no; Default: yes) | Whether interface is disabled or not. By default it is disabled. | |
| mac-address (MAC; Default: ') | Media Access Control number of an interface. | |
| modem-init (string; Default: ') | Modem init string (AT command that will be executed at modem startup) | |
| mtu (integer; Default: 1500) | Maximum Transmission Unit. Max packet size that LTE interface will be able to send without packet fragmentation. | |
| name (string; Default: ') | Descriptive name of the interface. | |
| network-mode (3g | gsm | lte; Default: 3g,gsm,lte) | Select/force mode for LTE interface to operate with | |
| operator (integer; Default: ') | used to lock device to specific operator full PLMN number is used for lock consisting from MCC+MNC. PLMN codes | |
| pin (integer; Default: ') | SIM Card's PIN code. |
APN profiles
All network related settings are moved under profiles, starting from RouterOS 6.41
Sub-menu:/interface lte apn
| Property | Description |
|---|---|
| add-default-route (yes | no) | Whether to add default route to forward all traffic over the LTE interface. |
| apn (string) | Service Provider's Access Point Name |
| authentication (pap | chap | none; Default: none) | Allowed protocol to use for authentication |
| default-route-distance (integer; Default: 2) | Sets distance value applied to auto created default route, if add-default-route is also selected. LTE route by default is with distance 2 to prefer wired routes over LTE |
| ip-type (ipv4 | ipv4-ipv6 | ipv6; Default: ) | Requested PDN type |
| ipv6-interface (; Default: ) | Interface on which to advertise IPv6 prefix |
| name (string; Default: ) | APN profile name |
| number (integer; Default: ) | APN profile number |
| passthrough-interface (; Default: ) | Interface to passthrough IP configuration (activates passthrough) |
| passthrough-mac (MAC; Default: auto) | If set to auto, then will learn MAC from first packet |
| password (string; Default: ) | Password used if any of the authentication protocols are active |
| use-network-apn (yes | no; Default: yes) | Parameter is available starting from RouterOS v7 and used only for MBIM modems. If set to yes, uses network provided APN. |
| use-peer-dns (yes | no; Default: yes) | If set to yes, uses DNS recieved from LTE interface |
| user (integer) | Username used if any of the authentication protocols are active |
Scanner
It is possible to scan LTE interfaces with /interface lte scan command
Available read only properties:
| Property | Description |
|---|---|
| duration (integer) | Duration of scan in seconds |
| freeze-frame-interval (integer) | time between data printout |
| number (integer) | Interface number or name |
User Info command
It is possible to send special 'info' command to LTE interface with /interface lte info command. In RouterOS v7 this command is moved to /interface lte monitor menu.
Properties (Up to 6.40)
| Property | Description |
|---|---|
| user-command (string; Default: ') | send a command to LTE card to extract useful information, e.g. with AT commands |
| user-command-only (yes | no; Default: ) |
User at-chat command
It is possible to send user defined 'at-chat' command to LTE interface with /interface lte at-chat command.
You can also use 'at-chat' function in scripts and assign command output to variable.
Quick setup example
Start with network settings -
Warning: This guide is for RouterOS versions starting from 6.41
Start with network settings - Add new connection parameters under LTE apn profile (provided by network provider):
Select newly created profile for LTE connection:
LTE interface should appear with running (R) flag:
From RouterOS=>6.41 DHCP client is added automatically. If it's not added - add a DHCP Client to LTE Interface manually:
If required, add NAT Masquerade for LTE Interface to get internet to the local network:
After interface is added, you can use 'info' command to see what parameters client acquired (parameters returned depends on LTE hardware device):
Passthrough Example
Starting from RouterOS v6.41 some LTE interfaces support LTE Passthrough feature where the IP configuration is applied directly to the client device. In this case modem firmware is responsible for the IP configuration and router is used only to configure modem settings - APN, Network Technologies and IP-Type. In this configuration the router will not get IP configuration from the modem.The LTE Passthrough modem can pass both IPv4 and IPv6 addresses if that is supported by modem.Some modems support multiple APN where you can pass the traffic from each APN to a specific router interface.
Passthrough will only work for one host. Router will automatically detect MAC address of the first received packet and use it for the Passthrough. If there are multiple hosts on the network it is possible to lock the Passthrough to a specific MAC.On the host on the network where the Passthrough is providing the IP a DHCP-Client should be enabled on that interface to.Note, that it will not be possible to connect to the LTE router via public lte ip address or from the host which is used by the passthrough. It is suggested to create additional connection from the LTE router to the host for configuration purposes. For example vlan interface between the LTE router and host.
To enable the Passthrough a new entry is required or the default entry should be changed in the '/interface lte apn' menu
Warning: Passthrough is not supported by all chipsets.
Examples.
To configure the Passthrough on ether1:
To configure the Passthrough on ether1 host 00:0C:42:03:06:AB:
To configure multiple APNs on ether1 and ether2:
To configure multiple APNs with the same APN for different interfaces:
Dual SIM Example
For some boards with dual SIM slots connected to the same modem slot (like LtAP mini, ltAP) it is possible to alternate between cellular providers. Follow this link - Dual SIM Application, to see examples of how to change SIM slot based on roaming status and in case the interface status is down with help of RouterOS scripts and scheduler.
Tips and Tricks
This paragraph contains information for additional features and usage cases.
Find device location using Cell information
On devices using R11e-LTE International version card (wAP LTE kit) some extra information is provided under info command (from 6.41rc61)
| Property | Description |
|---|---|
| current-operator (integer; Default: ) | Contains MCC and MNC. For example: current-operator: 24701 breaks to: MCC=247 MNC=01 |
| lac (integer; Default: ) | location area code (LAC) |
| current-cellid (integer; Default: ) | Station identification number |
Values can be used to find location in databases: Cell Id Finder
Using Cell lock
It is possible to lock R11e-LTE, R11e-LTE6 and R11e-4G modems and equipped devices to exact LTE tower. LTE info command provides currently used cellular tower information:
| Property | Description |
|---|---|
| phy-cellid (integer; Default: ) | Physical Cell Identification (PCI) of currently used cell tower. |
| earfcn (integer; Default: ) | Absolute Radio Frequency Channel Number |
Exact tower location as well as available bands and other information can be acquired from mobile carrier or by using online services:
By using those acquired variables it's possible to send AT command to modem for locking to tower in current format:
for R11e-LTE and R11e-LTE6
To lock modem at previously used tower at-chat can be used:
For R11e-LTE all set on locks are lost after reboot or modem reset. Cell data can be also gathered from 'cell-monitor'.
For R11e-LTE6 cell lock works only for the primary band, this can be useful if you have multiple channels on the same band and you want to lock it to a specific earfcn. Note, that cell lock is not band-specific and for ca-band it can also use other frequency bands, unless you use band lock.
Use cell lock to set the primary band to the 1300 earfcn and use the second channel for the ca-band:
Now it uses the earfcn: 1300 for the primary channel:
You can also set it the other way around:
Now it uses the earfcn: 1417 for the primary channel:
For R11e-LTE6 modem cell lock information will not be lost after reboot or modem reset. To remove cell lock use at-chat command:
for R11e-4G
All PLMN codes available here this variable can be also left blank
To lock modem to the cell - modem needs to be in non operating state, easiest way for R11e-4G modem is to add CellLock line to 'modem-init' string:
Multiple cells can also be added by providing list instead of one tower informatin in following format:
For example to lock to two different PCIs within same band and operator:
Cell Monitor
Cell monitor allows to scan available nearby mobile network cells:
Gathered data can be used for more precise location detection or for Cell lock.
Note: Not all modems support this feature
Troubleshooting
Enable LTE logging:
Check for errors in log:
search for CME error description online,
in this case:CME error 10 - SIM not inserted
Locking band on Huawei and other modems
To lock band for Huawei modems /interface lte set lte1 band=' option can't be used.
It is possible to use AT commands to lock to desired band manually.
To check all supported bands run at-chat command:
Example to lock to LTE band 7,
Change last part 40 to desired band specified hexadecimal value where:
All band HEX values and AT commands can be found in Huawei AT Command Interface Specification guide
Check if band is locked:
For more information check modem manufacturers AT command reference manuals.
mPCIe modems with RB9xx series devices
For mPCIe modems to work in RB9xx series devices it is required to set the USB type to mPCIe, this can be done using the following command:
In case your modem is not being recognized after a soft reboot, then you might need to add a delay before the USB port is being initialized. This can be done using the following command:
Modem firmware upgrade
Warning: Before attempting LTE modem firmware upgrade - upgrade RouterOS version to latest releases How To Upgrade RouterOS
Starting from RouterOS version 6.44beta20 it is possible to upgrade modems firmware.
Firmware update is available only as FOTA Firmware Over The Air - firmware upgrade can only be done through working mobile connection for:
- )R11e-LTE
- )R11e-LTE-US
Firmware update available as FOTA and as well as upgrade from file for:
- )R11e-4G
- )R11e-LTE6
Firmware updates usually includes small improvements in stability or small bug fixes that can't be included into RouterOS.
Check currently used firmware version by running:
Check if new firmware is available:
Upgrade firmware:
Whole upgrade process may take up to 10 minutes, depending on mobile connection speed.
After successful upgrade issue USB power-reset, reboot device or run AT+reset command, to update modem version readout under info command:
if modem has issues connecting to cells after update, or there are any other unrelated issues - wipe old configuration with:
Avoiding tethering speed throttling
Some operators (TMobile, YOTA etc.) allows unlimited data only for device SIM card is used on, all other data coming from mobile hotspots or tethering is highly limited by volume or by throughput speed.Some sources have found out that this limitation is done by monitoring TTL (Time To Live) values from packets to determinate if limitations need to be applied (TTL is decreased by 1 for each 'hop' made).RouterOS allows changing the TTL parameter for packets going from the router to allow hiding sub networks. Keep in mind that this may conflict with fair use policy.
More information: YOTA, TMobile
Unlocking SIM card after multiple wrong PIN code attempts
After locking SIM card, unlock can be done through 'at-chat'
Check current PIN code status:
If card is locked - unlock it by providing:
Replace PUK_code and NEW_PIN with matching values.
[Top | Back to Content]Summary
Support for Direct-IP mode type cards only. MBIM support is available in RouterOS v7 releases and MBIM driver is loaded automatically. If modem is not recognized in RouterOS v6 - Please test it in v7 releases before asking for support in RouterOS v6.
To enable access via a PPP interface instead of a LTE Interface, change direct IP mode with /port firmware set ignore-directip-modem=yes command and a reboot. Note that using PPP emulation mode you may not get the same throughput speeds as using the LTE interface emulation type.
In RouterOS v7 ignore-direct-modem parameter is moved under /interface lte settings menu
LTE Client
Properties
| Property | Description | |
|---|---|---|
| allow-roaming (yes | no; Default: no) | Enable data roaming for connecting to other countries) | Frequency band used in communication LTE Bands and bandwidths |
| comment (string; Default: ') | Descriptive name of an item | |
| disabled (yes | no; Default: yes) | Whether interface is disabled or not. By default it is disabled. | |
| mac-address (MAC; Default: ') | Media Access Control number of an interface. | |
| modem-init (string; Default: ') | Modem init string (AT command that will be executed at modem startup) | |
| mtu (integer; Default: 1500) | Maximum Transmission Unit. Max packet size that LTE interface will be able to send without packet fragmentation. | |
| name (string; Default: ') | Descriptive name of the interface. | |
| network-mode (3g | gsm | lte; Default: 3g,gsm,lte) | Select/force mode for LTE interface to operate with | |
| operator (integer; Default: ') | used to lock device to specific operator full PLMN number is used for lock consisting from MCC+MNC. PLMN codes | |
| pin (integer; Default: ') | SIM Card's PIN code. |
APN profiles
All network related settings are moved under profiles, starting from RouterOS 6.41
| Property | Description |
|---|---|
| add-default-route (yes | no) | Whether to add default route to forward all traffic over the LTE interface. |
| apn (string) | Service Provider's Access Point Name |
| authentication (pap | chap | none; Default: none) | Allowed protocol to use for authentication |
| default-route-distance (integer; Default: 2) | Sets distance value applied to auto created default route, if add-default-route is also selected. LTE route by default is with distance 2 to prefer wired routes over LTE |
| ip-type (ipv4 | ipv4-ipv6 | ipv6; Default: ) | Requested PDN type |
| ipv6-interface (; Default: ) | Interface on which to advertise IPv6 prefix |
| name (string; Default: ) | APN profile name |
| number (integer; Default: ) | APN profile number |
| passthrough-interface (; Default: ) | Interface to passthrough IP configuration (activates passthrough) |
| passthrough-mac (MAC; Default: auto) | If set to auto, then will learn MAC from first packet |
| password (string; Default: ) | Password used if any of the authentication protocols are active |
| use-network-apn (yes | no; Default: yes) | Parameter is available starting from RouterOS v7 and used only for MBIM modems. If set to yes, uses network provided APN. |
| use-peer-dns (yes | no; Default: yes) | If set to yes, uses DNS recieved from LTE interface |
| user (integer) | Username used if any of the authentication protocols are active |
Scanner
It is possible to scan LTE interfaces with /interface lte scan command
Available read only properties:
| Property | Description |
|---|---|
| duration (integer) | Duration of scan in seconds |
| freeze-frame-interval (integer) | time between data printout |
| number (integer) | Interface number or name |
User Info command
It is possible to send special 'info' command to LTE interface with /interface lte info command. In RouterOS v7 this command is moved to /interface lte monitor menu.
Properties (Up to 6.40)
| Property | Description |
|---|---|
| user-command (string; Default: ') | send a command to LTE card to extract useful information, e.g. with AT commands |
| user-command-only (yes | no; Default: ) |
User at-chat command
It is possible to send user defined 'at-chat' command to LTE interface with /interface lte at-chat command.
You can also use 'at-chat' function in scripts and assign command output to variable.
Quick setup example
Start with network settings -
Start with network settings - Add new connection parameters under LTE apn profile (provided by network provider):
Select newly created profile for LTE connection:
LTE interface should appear with running (R) flag:
From RouterOS=>6.41 DHCP client is added automatically. If it's not added - add a DHCP Client to LTE Interface manually:
If required, add NAT Masquerade for LTE Interface to get internet to the local network:
After interface is added, you can use 'info' command to see what parameters client acquired (parameters returned depends on LTE hardware device):
Passthrough Example
Starting from RouterOS v6.41 some LTE interfaces support LTE Passthrough feature where the IP configuration is applied directly to the client device. In this case modem firmware is responsible for the IP configuration and router is used only to configure modem settings - APN, Network Technologies and IP-Type. In this configuration the router will not get IP configuration from the modem. The LTE Passthrough modem can pass both IPv4 and IPv6 addresses if that is supported by modem. Some modems support multiple APN where you can pass the traffic from each APN to a specific router interface.
Passthrough will only work for one host. Router will automatically detect MAC address of the first received packet and use it for the Passthrough. If there are multiple hosts on the network it is possible to lock the Passthrough to a specific MAC. On the host on the network where the Passthrough is providing the IP a DHCP-Client should be enabled on that interface to. Note, that it will not be possible to connect to the LTE router via public lte ip address or from the host which is used by the passthrough. It is suggested to create additional connection from the LTE router to the host for configuration purposes. For example vlan interface between the LTE router and host.
To enable the Passthrough a new entry is required or the default entry should be changed in the '/interface lte apn' menu
Examples.
To configure the Passthrough on ether1:
To configure the Passthrough on ether1 host 00:0C:42:03:06:AB:
To configure multiple APNs on ether1 and ether2:
To configure multiple APNs with the same APN for different interfaces:
Dual SIM Example
For some boards with dual SIM slots connected to the same modem slot (like LtAP mini, ltAP) it is possible to alternate between cellular providers. Follow this link - Dual SIM Application, to see examples of how to change SIM slot based on roaming status and in case the interface status is down with help of RouterOS scripts and scheduler.
Tips and Tricks
This paragraph contains information for additional features and usage cases.
Find device location using Cell information
On devices using R11e-LTE International version card (wAP LTE kit) some extra information is provided under info command (from 6.41rc61)
| Property | Description |
|---|---|
| current-operator (integer; Default: ) | Contains MCC and MNC. For example: current-operator: 24701 breaks to: MCC=247 MNC=01 |
| lac (integer; Default: ) | location area code (LAC) |
| current-cellid (integer; Default: ) | Station identification number |
Values can be used to find location in databases: Cell Id Finder
Using Cell lock
It is possible to lock R11e-LTE, R11e-LTE6 and R11e-4G modems and equipped devices to exact LTE tower. LTE info command provides currently used cellular tower information:
| Property | Description |
|---|---|
| phy-cellid (integer; Default: ) | Physical Cell Identification (PCI) of currently used cell tower. |
| earfcn (integer; Default: ) | Absolute Radio Frequency Channel Number |
Exact tower location as well as available bands and other information can be acquired from mobile carrier or by using online services:
By using those acquired variables it's possible to send AT command to modem for locking to tower in current format:
for R11e-LTE and R11e-LTE6
To lock modem at previously used tower at-chat can be used:
For R11e-LTE all set on locks are lost after reboot or modem reset. Cell data can be also gathered from 'cell-monitor'.
For R11e-LTE6 cell lock works only for the primary band, this can be useful if you have multiple channels on the same band and you want to lock it to a specific earfcn. Note, that cell lock is not band-specific and for ca-band it can also use other frequency bands, unless you use band lock.
Use cell lock to set the primary band to the 1300 earfcn and use the second channel for the ca-band:
Now it uses the earfcn: 1300 for the primary channel:
You can also set it the other way around:
Now it uses the earfcn: 1417 for the primary channel:
For R11e-LTE6 modem cell lock information will not be lost after reboot or modem reset. To remove cell lock use at-chat command:
for R11e-4G
All PLMN codes available here this variable can be also left blank
To lock modem to the cell - modem needs to be in non operating state, easiest way for R11e-4G modem is to add CellLock line to 'modem-init' string:
Multiple cells can also be added by providing list instead of one tower informatin in following format:
For example to lock to two different PCIs within same band and operator:
Cell Monitor
Cell monitor allows to scan available nearby mobile network cells:
Gathered data can be used for more precise location detection or for Cell lock.
Troubleshooting
Enable LTE logging:
Check for errors in log:
search for CME error description online,
in this case: CME error 10 - SIM not inserted
Locking band on Huawei and other modems
To lock band for Huawei modems /interface lte set lte1 band=' option can't be used.
It is possible to use AT commands to lock to desired band manually.
To check all supported bands run at-chat command:
Change last part 40 to desired band specified hexadecimal value where:
All band HEX values and AT commands can be found in Huawei AT Command Interface Specification guide
Check if band is locked:
For more information check modem manufacturers AT command reference manuals.
mPCIe modems with RB9xx series devices
For mPCIe modems to work in RB9xx series devices it is required to set the USB type to mPCIe, this can be done using the following command:
In case your modem is not being recognized after a soft reboot, then you might need to add a delay before the USB port is being initialized. This can be done using the following command:
Modem firmware upgrade
Starting from RouterOS version 6.44beta20 it is possible to upgrade modems firmware.
Firmware update is available only as FOTA Firmware Over The Air - firmware upgrade can only be done through working mobile connection for:
- )R11e-LTE
- )R11e-LTE-US
Firmware update available as FOTA and as well as upgrade from file for:
- )R11e-4G
- )R11e-LTE6
Firmware updates usually includes small improvements in stability or small bug fixes that can't be included into RouterOS.
Check currently used firmware version by running:
Check if new firmware is available:
Upgrade firmware:
After successful upgrade issue USB power-reset, reboot device or run AT+reset command, to update modem version readout under info command:
if modem has issues connecting to cells after update, or there are any other unrelated issues - wipe old configuration with:
Avoiding tethering speed throttling
Some operators (TMobile, YOTA etc.) allows unlimited data only for device SIM card is used on, all other data coming from mobile hotspots or tethering is highly limited by volume or by throughput speed. Some sources have found out that this limitation is done by monitoring TTL (Time To Live) values from packets to determinate if limitations need to be applied (TTL is decreased by 1 for each 'hop' made). RouterOS allows changing the TTL parameter for packets going from the router to allow hiding sub networks. Keep in mind that this may conflict with fair use policy.
More information: YOTA, TMobile
Unlocking SIM card after multiple wrong PIN code attempts
After locking SIM card, unlock can be done through 'at-chat'
Check current PIN code status:
If card is locked - unlock it by providing:
Yota Driver Mac Os
Replace PUK_code and NEW_PIN with matching values.