>[оверквотинг удален]
>>>> Если она постоит ночь то перестает раздавать, похоже на какую то микротрещину
>>>> на плате с нагревом она работает... Постоит и не работает...
>>>> Стремная тема...
>>> чудеса в решете
>>> wireshar на компе запусти и понюхай траффик. возможно "трещина" в писюке.
>> Да не написал...
>> wireshark молчит, но туда приходит информация о том что подключена киско...
>> Но от dhcp ничего не приходит...
> debug dhcp detail
> свича нет между ними? с DHCP snooping, например.

Свича нет. Но в самой cisco стоит модуль свич на 4 порта (L2)

Обновленный конфиг

Building configuration...

Current configuration : 2631 bytes
!
version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname C881W-E-K9
!
boot-start-marker
boot-end-marker
!
aaa new-model
!
!
aaa authentication login default local
!
aaa session-id common
ethernet lmi ce
bsd-client server url https://cloudsso.cisco.com/as/token.oauth2
clock timezone MSK 3 0
service-module wlan-ap 0 bootimage autonomous
!
ip dhcp excluded-address 192.168.16.1 192.168.16.30
ip dhcp excluded-address 192.168.16.200 192.168.16.254
ip dhcp excluded-address 192.168.17.1 192.168.17.30
ip dhcp excluded-address 192.168.17.200 192.168.17.254
!
ip dhcp pool LAN
network 192.168.16.0 255.255.255.0
default-router 192.168.16.1
dns-server 192.168.16.1
!
ip dhcp pool GUEST
network 192.168.17.0 255.255.255.0
default-router 192.168.17.1
dns-server 192.168.17.1
!
ip domain name freestyleteam.ru
ip cef
no ipv6 cef
!
multilink bundle-name authenticated
!
cts logging verbose
license udi pid C881W-E-K9 sn FCZ171390Z4
license accept end user agreement
license boot module c800 level advipservices
!
archive
log config
  logging enable
  hidekeys
username sysadmin privilege 15 secret 5 $1$9K1.$M1chRMHpDED286j5s0rJs1
!
ip ssh time-out 60
ip ssh authentication-retries 2
ip ssh version 2
!
interface FastEthernet0
no ip address
spanning-tree portfast
!
interface FastEthernet1
no ip address
spanning-tree portfast
!
interface FastEthernet2
no ip address
spanning-tree portfast
!
interface FastEthernet3
switchport mode trunk
no ip address
spanning-tree portfast
!
interface FastEthernet4
description MortonTelecom
ip address dhcp
ip nat outside
ip virtual-reassembly in
shutdown
duplex auto
speed auto
!
interface Wlan-GigabitEthernet0
no ip address
!
interface wlan-ap0
no ip address
!
interface Vlan1
description LAN
ip address 192.168.16.1 255.255.255.0
ip accounting output-packets
ip nat inside
ip virtual-reassembly in
!
interface Vlan2
description GUEST
ip address 192.168.17.1 255.255.255.0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
control-plane
!
mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
!
mgcp profile default
!
line con 0
no modem enable
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport input all
stopbits 1
line vty 0 4
privilege level 15
transport input telnet ssh
!
scheduler allocate 20000 1000
!
end