Hi,

My TP-Link Archer C7 AC1750 router randomly reboots. It reboots almost thrice in a day and every day without fail. This has started happening recently after the latest firmware upgrade. I am using both 2.4G and 5G wireless connection. There are around 5 devices connected including a raspberry pi4 via LAN. I have 4 ports open in the router and UPnP is also enabled.  QOS and Traffic Statistics is disabled. The internet connectivity is through PPPOE. I have a fiber broadband connection and the Archer C7 AC1750 is connected through a Cat 5 cable which is connected to an ONU device. Please find below the router log immediately after reboot. FYI I have not performed a factory reset.

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#                    Archer C7 System Log
# Time = 2020-12-07 13:58:35
# H-Ver = 5.0.0 ; S-Ver = 1.0.16 Build 20201030 rel.55736
# LAN: I = 192.168.31.1 ; M = 255.255.255.0 ; MAC = xxx
# WAN: W = pppoe ; I = xxx ; M = 255.255.255.255 ; MAC = xxx
#      G = xxx ; D1 = xxxx ; D2 = xxx
# Clients connected: 5 ; WI-FI : 4 
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2020-12-07 12:54:27 dhcps[17407]: <6> 212054 send ack ip 192.168.31.159 and dns 192.168.31.1 to xxx
2020-12-07 12:54:27 dhcps[17407]: <6> 212053 receive request ip 192.168.31.159 from xxx
2020-12-07 12:54:27 dhcps[17407]: <6> 212052 send offer ip 192.168.31.159 and dns 0.0.0.0 to xxx
2020-12-07 12:54:27 dhcps[17407]: <6> 212051 receive discover from xxx
2020-12-07 12:54:27 dhcps[17407]: <6> 212052 send offer ip 192.168.31.159 and dns 0.0.0.0 to xxx
2020-12-07 12:54:25 dhcps[17407]: <6> 212051 receive discover from xxx
2020-12-07 12:54:17 dhcps[17407]: <6> 212054 send ack ip 192.168.31.174 and dns 192.168.31.1 to xxx
2020-12-07 12:54:17 dhcps[17407]: <6> 212053 receive request ip 192.168.31.174 from xxx
2020-12-07 12:54:17 dhcps[17407]: <6> 212052 send offer ip 192.168.31.174 and dns 192.168.31.1 to xxx
2020-12-07 12:54:15 dhcps[17407]: <6> 212051 receive discover from xxx
2020-12-07 12:50:35 dhcps[17407]: <6> 212054 send ack ip 192.168.31.112 and dns 192.168.31.1 to xxx
2020-12-07 12:50:35 dhcps[17407]: <6> 212053 receive request ip 192.168.31.112 from xxx
2020-12-07 12:25:13 dhcps[17407]: <6> 212054 send ack ip 192.168.31.140 and dns 192.168.31.1 to xxx
2020-12-07 12:25:13 dhcps[17407]: <6> 212053 receive request ip 192.168.31.140 from xxx
2020-12-07 12:25:13 dhcps[17407]: <6> 212052 send offer ip 192.168.31.140 and dns 192.168.31.1 to xxx
2020-12-07 12:25:13 dhcps[17407]: <6> 212051 receive discover from xxx
2020-12-07 12:25:13 dhcps[17407]: <6> 212052 send offer ip 192.168.31.140 and dns 192.168.31.1 to xxx
2020-12-07 12:25:10 dhcps[17407]: <6> 212051 receive discover from xxx
2020-12-07 11:47:07 dhcps[17407]: <6> 212054 send ack ip 192.168.31.204 and dns 192.168.31.1 to xxx
2020-12-07 11:47:07 dhcps[17407]: <6> 212053 receive request ip 192.168.31.204 from xxx
2020-12-07 11:46:21 dhcps[17249]: <6> 212504 Service start
2020-12-07 11:21:43 nat[6951]: <6> 211024 DMZ disabled
2020-12-07 11:21:42 nat[6951]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:udp]
2020-12-07 11:21:42 nat[6951]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:tcp]
2020-12-07 11:21:41 nat[6951]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:all]
2020-12-07 11:21:39 nat[6951]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:tcp]
2020-12-07 11:21:38 nat[6951]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:all]
2020-12-07 11:21:35 upnp[7638]: <6> 217504 Service start
2020-12-07 11:21:35 upnp[7638]: <6> 217505 Service stop
2020-12-07 11:21:28 nat[6951]: <6> 211501 Initialization succeeded
2020-12-07 11:21:26 nat[6951]: <6> 211501 Initialization succeeded
2020-12-07 11:21:15 qos[6743]: <6> 259504 Service start
2020-12-07 11:21:15 qos[6743]: <6> 259503 Function disabled
2020-12-07 11:21:09 nat[5128]: <6> 211021 IPSEC ALG enabled
2020-12-07 11:21:09 nat[5128]: <6> 211021 L2TP ALG enabled
2020-12-07 11:21:09 nat[5128]: <6> 211021 PPTP ALG enabled
2020-12-07 11:21:09 nat[5128]: <6> 211021 SIP ALG enabled
2020-12-07 11:21:09 nat[5128]: <6> 211021 RTSP ALG enabled
2020-12-07 11:21:09 nat[5128]: <6> 211021 H323 ALG enabled
2020-12-07 11:21:09 nat[5128]: <6> 211021 TFTP ALG enabled
2020-12-07 11:21:09 nat[5128]: <6> 211021 FTP ALG enabled
2020-12-07 11:21:09 nat[5128]: <6> 211024 DMZ disabled
2020-12-07 11:21:09 nat[5128]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:udp]
2020-12-07 11:21:08 nat[5128]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:tcp]
2020-12-07 11:21:08 nat[5128]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:all]
2020-12-07 11:21:08 nat[5128]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xxx protocol:tcp]
2020-12-07 11:21:08 nat[5128]: <5> 211054 Virtual server created succeeded[ex-port:xxx ip:192.168.31.150 in-port:xx protocol:all]
2020-12-07 11:21:02 nat[5128]: <6> 211501 Initialization succeeded
2020-12-07 11:20:56 nat[5128]: <6> 211501 Initialization succeeded
2020-12-07 11:20:55 dhcps[3964]: <6> 212054 send ack ip 192.168.31.149 and dns 192.168.31.150 to xxx
2020-12-07 11:20:55 dhcps[3964]: <6> 212053 receive request ip 192.168.31.149 from xxx
2020-12-07 11:20:55 factory-reset[5441]: <6> 284504 Service start

2020-10-30 00:01:04 ppp[5169]: <6> 261091 ppp receive IPCP ACK
2020-10-30 00:01:04 ppp[5169]: <6> 261090 ppp send IPCP Req options(addr=xxx;dns1=xxx;dns2=xxx;)
2020-10-30 00:01:04 ppp[5169]: <6> 261093 ppp receive IPCP NAK options(addr=xxx;dns1=xxx;dns1=xxx;)
2020-10-30 00:01:04 ppp[5169]: <6> 261061 ppp send LCP Request options(mru=1480;magic=0x19bc8e99;)
2020-10-30 00:01:04 ppp[5169]: <6> 261025 pppoe receive PADS sess-id(12905)
2020-10-30 00:01:04 ppp[5169]: <6> 261024 pppoe send PADR Host-Uniq(1431)
2020-10-30 00:01:04 ppp[5169]: <6> 261022 pppoe receive PADO form AC-MAC(xxx)
2020-10-30 00:01:04 ppp[5169]: <6> 261023 pppoe receive PADO AC-Name(speednet)
2020-10-30 00:01:04 ppp[5169]: <6> 261021 pppoe send PADI Host-Uniq(1431)