The router is falling, what can I do?

Question

network hardware

Good day.

There is a router, Asus WL-500G with firmware DD-WRT v24-sp1 (07/27/08) mega. About 15 clients are sitting on it (most via wi-fi, a few via wire). Everything is fine, but sometimes the problem of the following kind appears: wi-fi turns off (all clients lose connection with the router), the link remains on wired clients but there is no connection with anyone, after 2-3 minutes everything returns and an endless loop begins (fell off - rose). Juggling the power supply has no effect, it still falls and rises. At the same time, sooner or later everything stabilizes back, after 5 minutes or after half an hour - I didn’t notice a pattern.
The question is what is it and what can be done? The option of replacing the router is considered last, unfortunately, in line - because this is an office, and just taking and changing the device will be problematic.
Thank you.

Answer 1

try to reduce the wi-fi power or, for example, place a router under the fan / air conditioner, such a frequency ... it looks very much like something is heating / overloading.
Although if sooner or later everything stabilizes - perhaps not a high-quality power source, and with minor voltage drops in the network, it junk?

Answer 2

Asus often began to meet low-quality power supplies (however, this also happens to others). Try a more powerful one, at least even from a computer from + 5V to power it for testing.
Indeed, in such heat, overheating is very likely. If so, disassemble the router, attach a heatsink from the motherboard / video card to the main chip.

Answer 3

I think cooling, I will not be modest. My research on the topic.

Answer 4

I had 500g Premium v1 thawed-raised just because of a dying power supply. Disassembled, resoldered the swollen capacitor - it works again. According to reviews, BPs die in two years, I lasted three.

Answer 5

put the factory firmware. DD-WRT is still raw and full of bugs

Answer 6

What's in the logs at this point? I have an Asus RT-N16 on DD-WRT firmware with a large number of connections (as soon as uTorrent unpacked the download) in the logs gave out curses “ip_conntrack: table full, dropping packet”. No matter how I tried to play with the parameters, I could not get rid of it.
Switched to Tomato USB - much more flexible, in my opinion, firmware. There are no such problems on it, and the conntrack configuration / logging toolkit is much more convenient.

Answer 7

There may be two common reasons:
1) The Wi-Fi module overheats under load, it is solved by hanging a large radiator on it.
2) Horseradish power, try to buy a switching power supply with the same voltage and current ratings.