Router

Drive a MikroTik router as a Lager net. This is the bench’s network fault-injection tool. It lets a test assert what firmware does when the network degrades — loses the internet, loses DNS, gets slow — rather than simply disappearing.

Handle

use lager::LagerBox;

let lager = LagerBox::from_env()?;
let router = lager.router("router1");

Methods

Method	Description
`name()`	The net name this handle addresses
`connect()`	Verify connectivity; returns identity, version, board, uptime
`system_info()`	Structured system resource information
`interfaces()`	All network interfaces, as raw RouterOS records
`wireless_interfaces()`	Wireless interfaces, raw
`wireless_clients()`	Currently associated wireless clients
`dhcp_leases()`	Active DHCP leases
`enable_interface()`	Enable an interface by name
`disable_interface()`	Disable an interface by name
`set_wireless_ssid()`	Change the broadcast SSID
`block_internet()`	Drop all forwarded traffic
`remove_firewall_rules()`	Remove every Lager-added firewall rule
`reboot()`	Reboot the router
`command()`	Generic escape hatch for any other router action

Types

`RouterSystemInfo`

pub struct RouterSystemInfo {
    pub name: Option<String>,          // identity
    pub version: Option<String>,       // RouterOS version
    pub board: Option<String>,
    pub architecture: Option<String>,
    pub uptime: Option<String>,        // e.g. "1w2d3h"
    pub cpu_load: Option<i64>,         // percent
    pub free_memory: Option<i64>,      // bytes
    pub total_memory: Option<i64>,
    pub free_hdd_space: Option<i64>,
}

Method Reference

`connect() -> Result<serde_json::Value>`

Verify connectivity by fetching the router’s identity.

`system_info() -> Result<RouterSystemInfo>`

Structured resource information.

`block_internet() -> Result<()>`

Drop all forwarded traffic, simulating an internet outage while leaving the local network — and the DUT’s association to it — intact.

`remove_firewall_rules() -> Result<()>`

Remove every firewall rule Lager added. This is the undo for block_internet and anything added through command().

Rules persist on the router until removed. A test that blocks the internet and then fails without cleaning up leaves the next test running on a broken network. Put remove_firewall_rules() in a teardown path that runs even on failure.

`enable_interface(interface: &str)` and `disable_interface(interface: &str)`

Enable or disable an interface by name — use these when you want the access point to vanish entirely, rather than to lose routing.

`set_wireless_ssid(interface: &str, ssid: &str) -> Result<serde_json::Value>`

Change the broadcast SSID.

`command(action: &str, params: serde_json::Value) -> Result<serde_json::Value>`

The generic escape hatch: invoke any other router action by name with raw JSON parameters. This is how you reach DNS blocking, port blocking, bandwidth limits, DHCP control, security profiles and access lists. None of these have a typed wrapper in this crate yet.

use serde_json::json;

router.command("block_dns", json!({}))?;
router.command("block_port", json!({ "port": 8883, "protocol": "tcp" }))?;
router.command("add_bandwidth_limit", json!({
    "target": "192.168.88.0/24",
    "max_limit": "1M/1M",
}))?;

Examples

Assert firmware retries instead of rebooting when the internet goes away

use lager::LagerBox;
use std::time::Duration;

let lager = LagerBox::from_env()?;
let router = lager.router("router1");
let mut uart = lager.uart("uart1")?;

router.connect()?;

let outcome = (|| -> lager::Result<()> {
    router.block_internet()?;
    // The DUT stays on the AP; only routing is gone.
    let log = uart.wait_for(b"retry", Duration::from_secs(60))?;
    assert!(!String::from_utf8_lossy(&log).contains("rebooting"),
            "firmware rebooted instead of retrying");
    Ok(())
})();

router.remove_firewall_rules()?;   // always, even if the assertion failed
outcome?;

Squeeze the bandwidth and check an OTA still completes

use serde_json::json;

router.command("add_bandwidth_limit", json!({
    "target": "192.168.88.50",
    "max_limit": "256k/256k",
}))?;

// ... trigger the OTA and wait for it ...

router.command("remove_bandwidth_limits", json!({}))?;

Supported Hardware

Device	Notes
MikroTik RouterOS devices	Driven over the RouterOS REST API

Notes

This net sends no role hint. A router net can be saved with role router or the legacy mikrotik. The box verifies a supplied hint exactly, so a hint will fail against whichever spelling the net does not use. A consequence you will see: a missing router net reports Net 'router1' not found without naming a role, where other net types report Net 'x (role adc)' not found.
Every router action gets a flat 60-second budget, because reboots and reset actions are slow and a busy router lags.
reboot() returns as soon as the router accepts the command, not when it is back.
Blocking the internet does not disconnect the DUT from WiFi. That distinction is the entire point of this net type.

Getting Started

Development

Power & Simulation

Measurement

I/O & Communication

Utilities

Security

Guides

Handle

Methods

Types

`RouterSystemInfo`

Method Reference

`connect() -> Result<serde_json::Value>`

`system_info() -> Result<RouterSystemInfo>`

`block_internet() -> Result<()>`

`remove_firewall_rules() -> Result<()>`

`enable_interface(interface: &str)` and `disable_interface(interface: &str)`

`set_wireless_ssid(interface: &str, ssid: &str) -> Result<serde_json::Value>`

`command(action: &str, params: serde_json::Value) -> Result<serde_json::Value>`

Examples

Assert firmware retries instead of rebooting when the internet goes away

Squeeze the bandwidth and check an OTA still completes

Supported Hardware

Notes

​Handle

​Methods

​Types

​RouterSystemInfo

​Method Reference

​connect() -> Result<serde_json::Value>

​system_info() -> Result<RouterSystemInfo>

​block_internet() -> Result<()>

​remove_firewall_rules() -> Result<()>

​enable_interface(interface: &str) and disable_interface(interface: &str)

​set_wireless_ssid(interface: &str, ssid: &str) -> Result<serde_json::Value>

​command(action: &str, params: serde_json::Value) -> Result<serde_json::Value>

​Examples

​Assert firmware retries instead of rebooting when the internet goes away

​Squeeze the bandwidth and check an OTA still completes

​Supported Hardware

​Notes

Handle

Methods

Types

`RouterSystemInfo`

Method Reference

`connect() -> Result<serde_json::Value>`

`system_info() -> Result<RouterSystemInfo>`

`block_internet() -> Result<()>`

`remove_firewall_rules() -> Result<()>`

`enable_interface(interface: &str)` and `disable_interface(interface: &str)`

`set_wireless_ssid(interface: &str, ssid: &str) -> Result<serde_json::Value>`

`command(action: &str, params: serde_json::Value) -> Result<serde_json::Value>`

Examples

Assert firmware retries instead of rebooting when the internet goes away

Squeeze the bandwidth and check an OTA still completes

Supported Hardware

Notes