====== Network / TCP/IP Commands ======

This page documents AT commands for network testing, TCP/IP flow, and connectivity functions in HaLow firmware 2.x modules.

===== AT+IPERF2 – TCP Flow Test =====

**Execute:**  
  <code>AT+IPERF2=c,192.168.123.2,5002,60</code>  *(client send)*  
  <code>AT+IPERF2=s,5002</code>  *(server receive)*

**Parameters:**  
  * `c/s` – "c" = client, "s" = server  
  * `ip_addr` – target IP address  
  * `port` – TCP port number  
  * `time` – duration in seconds  
  * Requires `SYS_NETWORK_SUPPORT` macro to be enabled  

===== AT+PING – Ping Function =====

**Execute:**  
  <code>AT+PING=192.168.123.2,5,1024</code>

**Parameters:**  
  * `ip_domain` – IP address or domain name  
  * `send_times` – number of packets  
  * `size` – packet size in bytes  
  * Cannot enter other AT commands while pinging  
  * Requires `SYS_NETWORK_SUPPORT` and `LWIP_RAW` macro definitions  

===== Notes =====

* `AT+IPERF2` helps measure TCP throughput between two modules.  
* `AT+PING` can be used to check connectivity and latency.  
* Ensure that network support macros are enabled in firmware for these commands to work.