Differences

This shows you the differences between two versions of the page.

--- doc:appunti:hardware:tl-ac750_archer_c20v5 [2021/02/22 16:34] – [OpenWrt on Router TP-Link AC750 Archer C20 v5] niccolo
+++ doc:appunti:hardware:tl-ac750_archer_c20v5 [2021/02/26 11:45] (current) – [Installing additional software] niccolo
@@ Line 2: / Line 2: @@
 Purchased on February 2021 for about 23 Euros because I needed a router with both **2.4** and **5 GHz WiFi**.
+It seems that the stock firmware (version **0.9.1 4.16**) is **practically unusable**; while ping times seem OK, loading an average web page with many images on it, get stuck in the middle, with several non-loaded pieces (images, JavaScript, ect.), causing a disaster web experience. The old **[[tl-wr741nd|TL-WR741ND]]** with half the RAM, outperforms this new one by far!
+{{.:tplink:tp-link-ac750-archer-c20v5.jpg?400|TP-Link AC750 Archer C20 v5}}
 ^ Hardware Version        | Archer C20 v5 00000005  |
@@ Line 13: / Line 17: @@
 ^ Default IP Address      | 192.168.0.1  |
 ^ Default login/password  | admin/admin  |
+^ Stock TP-Link firmware  | 0.9.1 4.16  |
-{{ .:tplink:tp-link-ac750-archer-c20v5.jpg?300|TP-Link AC750 Archer C20 v5}}
+^ OpenWrt version tested  | 19.07.6, r11278-8055e38794  |
-It seems that the stock firmware (version **0.9.1 4.16**) is **practically unusable**; while ping times seem OK, loading an average web page with many images on it, get stuck in the middle, with several non-loaded pieces (images, JavaScript, ect.), causing a disaster web experience. The old **[[tl-wr741nd|TL-WR741ND]]** with half the RAM, outperforms this new one by far!
 **NOTICE**: It seems that the problem of **poor web performances is solved** with the original TP-Link firmware **0.9.1 4.17**; I downloaded that version from the TP-Link site and flashed it above OpenWrt following the procedure explained below.
 However the winning choice for me is to install OpenWrt on it. Fortunately enough **OpenWrt v.19.07.6** was compiled for this device and it works quite well, supporting **dual band WiFi**.
-{{ .:tplink:tp-link-ac750-archer-c20v5_back.jpg?300|}}
 ===== Installing OpenWrt via TFTP =====
-This is the step-by-step procedure that I follower, using my Debian GNU/Linux PC as my workstation.
+{{ .:tplink:tp-link-ac750-archer-c20v5_back.jpg?300|}}
+This is the step-by-step procedure that I followed, using my Debian GNU/Linux PC as my workstation.
   * Download the **OpenWrt 19.07.6** image compiled by **Linaro1985**, from his **[[https://github.com/Linaro1985/openwrt/releases/tag/220121|GitHub page]]** (here a local copy: {{.:tplink:tplinkarcherc20v5.zip|TPLinkArcherC20V5.zip}}).
@@ Line 58: / Line 60: @@
 ^ Default IP Address  | %%http://192.168.1.1/%% |
 ^ Default login/password  | root/blank (none)  |
+SSH access is obviously enabled:
+<code>
+BusyBox v1.30.1 () built-in shell (ash)
+  _______                     ________        __
+ |       |.-----.-----.-----.|  |  |  |.----.|  |_
+ |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
+ |_______||   __|_____|__|__||________||__|  |____|
+          |__| W I R E L E S S   F R E E D O M
+ -----------------------------------------------------
+ OpenWrt 19.07.6, r11278-8055e38794
+ -----------------------------------------------------
+</code>
 ===== Reverting to the official TP-Link firmware =====
@@ Line 136: / Line 153: @@
 Filesystem                Size      Used Available Use% Mounted on
 /dev/root                 3.0M      3.0M         0 100% /rom
-tmpfs                    29.3M    248.0K     29.1M   1% /tmp
-tmpfs                    29.3M     52.0K     29.3M   0% /tmp/root
-tmpfs                   512.0K         0    512.0K   0% /dev
 /dev/mtdblock5            3.0M    296.0K      2.7M  10% /overlay
 overlayfs:/overlay        3.0M    296.0K      2.7M  10% /
 </code>
+We installed the following packages:
+^ Package name                ^ Space required  ^
+^ openvpn-openssl             |  1.3 Mb |
+^ tcpdump-mini                |  204 kb |
+^ coreutils-base64            |   19 kb |
+^ etherwake                   |   24 kb |
+^ diffutils                   |  108 kb |
+^ libustream-openssl20150806  |   12 kb |
+^ ca-bundle                   |  140 kb |
+With older versions of OpenWrt (e.g. version 14.07 Barrier Breaker) we used **openvpn-polarssl**, which was a version of OpenVPN with SSL support provided by **libpolarssl**, a lightweigth SSL library. That version seems not longer available, so we opted for **openvpn-openssl** which depends on the full **libopenssl1.1**. This has the advantage that we can install the **%%libustream-openssl*%%** and the **ca-bundle** packages and have e.g. the **wget** able to open **https** URLs.
+We preferred **etherwake** instaead of **wakeonlan** because the latter depends on **perl** which is a large package and the free space is not sufficient.
+===== Downloads =====
+  * **{{.:tplink:tplinkarcherc20v5.zip|TPLinkArcherC20V5.zip}}** - OpenWrt 19.07.6 for the TP-Link Archer C20 v5 by user Linaro1985.
+  * **{{ :doc:appunti:hardware:tplink:archer_c20v5_eu_0.9.1_4.17.zip|Archer_C20v5_EU_0.9.1_4.17.zip}}** - Official TP-Link firmware for the TP-Link Archer C20 v5 EU.