how to PC (AP, 802.11gbn) <-> mesh root (STA, 802.111bgn), mesh root (AP, 802.11lr) <-> many mesh nodes (STA, 802.11lr)

beta-tester
Posts: 5
Joined: Mon Nov 02, 2020 5:03 pm

how to PC (AP, 802.11gbn) <-> mesh root (STA, 802.111bgn), mesh root (AP, 802.11lr) <-> many mesh nodes (STA, 802.11lr)

Postby beta-tester » Mon Nov 02, 2020 5:58 pm

hi, i am new to this forum...

i am wondering, if i can use an ESP32 wifi mesh with long range capability, where one ESP32 acts as the "gateway" between normal WiFi access point to my internal network, where my PC is and the ESP32-mesh-nodes, where each ESP-mesh node can communicate to my PC via TCP or UDP.

something like:

Code: Select all

PC
<->
WiFi router, 802.11bgn, AP (my normal local network router)
<->
{
    ESP-mesh as root node (802.11bgn, STA-mode)
    <->
    bridge/NAT/repeater
    <->
    ESP-mesh as root node (802.11 LR, AP-mode)
}
<->
ESP-mesh nodes (802.11 LR, STA-mode)
i think this ESP32 root node must have a bridge, NAT or repeater capability between,
must use 802.11bgn Wifi in STA-mode to interconnect with my normal local network router and
must use 802.11 LR WiFi in AP-mode to interconnect to the ESP-mesh, because i want to use the ESP32 long range capability in the mesh itself.

would this be possible to build with the esp-idf / esp-mdf?
is there already something like this as an example?

rrelande
Posts: 2
Joined: Thu Apr 08, 2021 8:51 pm

Re: how to PC (AP, 802.11gbn) <-> mesh root (STA, 802.111bgn), mesh root (AP, 802.11lr) <-> many mesh nodes (STA, 802.11

Postby rrelande » Wed Apr 28, 2021 2:16 pm

This question is quite legitimate as it would help a lot.
in the ESP MESH OVERVIEW, https://www.espressif.com/en/products/s ... h/overview
there is actually an icon claiming that

ALL NODES GET IP CONNECTIVITY

but as we go through in more details,
devices need to communicate using ESP-MESH datagrams. then only the root node will create the IP packet.

which means that nodes DO NOT HAVE NATIVE IP CONNECTIVITY

It could make sense to this clarification. MDF is a great way to route data but it DOES NOT provide IP connectivity to all nodes as of now.

willemmerson
Posts: 36
Joined: Mon Mar 18, 2019 12:34 pm

Re: how to PC (AP, 802.11gbn) <-> mesh root (STA, 802.111bgn), mesh root (AP, 802.11lr) <-> many mesh nodes (STA, 802.11

Postby willemmerson » Thu Apr 29, 2021 7:58 am

Have you seen this? I've never tried it but from the log it seems like each node does have ip connectivity:
https://github.com/espressif/esp-idf/tr ... al_network

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