failed to obtain ip address from dhcp server

RouterOS Beginner Basics
1

hi,
my problem is x520-da2 can not obtain ip address from dhcp server,others are ok.
switch: CRS309-1G-8S+
router: RB5009UG+S+IN
os:routeros 7.6

the switch have downlink ports to connect to x520-da2(uplink name is 3_sfp+_workstation),and uplink ports to connect to router.
btw,switch my CRS309-1G-8S+ from routeros back to swos,everything works fine.
thanks!

CRS309-1G-8S+ config:

# dec/16/2022 15:44:12 by RouterOS 7.6
# software id = xxxxxxx
#
# model = CRS309-1G-8S+
# serial number = xxxxxxx
/interface bridge
add admin-mac=08:55:31:05:81:A3 auto-mac=no comment=defconf name=br-lan
/interface ethernet
set [ find default-name=sfp-sfpplus1 ] name=1_sfp+_router_in
set [ find default-name=sfp-sfpplus3 ] name=3_sfp+_workstation speed=10Gbps
set [ find default-name=sfp-sfpplus5 ] name=5_sfp+_dell-data speed=10Gbps
set [ find default-name=ether1 ] name=9_mgmt
set [ find default-name=sfp-sfpplus7 ] auto-negotiation=no
/interface list
add name=LAN
add name=WAN
add name=MGMT
/interface lte apn
set [ find default=yes ] ip-type=ipv4 use-network-apn=no
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/port
set 0 name=serial0
/interface bridge port
add bridge=br-lan comment=defconf ingress-filtering=no interface=9_mgmt
add bridge=br-lan comment=defconf ingress-filtering=no interface=sfp-sfpplus2
add bridge=br-lan comment=defconf ingress-filtering=no interface=\
    3_sfp+_workstation
add bridge=br-lan comment=defconf ingress-filtering=no interface=sfp-sfpplus4
add bridge=br-lan comment=defconf ingress-filtering=no interface=\
    5_sfp+_dell-data
add bridge=br-lan comment=defconf ingress-filtering=no interface=sfp-sfpplus6
add bridge=br-lan comment=defconf ingress-filtering=no interface=sfp-sfpplus7
add bridge=br-lan comment=defconf ingress-filtering=no interface=sfp-sfpplus8
add bridge=br-lan ingress-filtering=no interface=1_sfp+_router_in
/ip settings
set max-neighbor-entries=8192
/interface list member
add interface=1_sfp+_router_in list=WAN
add interface=3_sfp+_workstation list=LAN
add interface=9_mgmt list=MGMT
add interface=5_sfp+_dell-data list=LAN
/interface ovpn-server server
set auth=sha1,md5
/ip dhcp-client
add interface=*B
/ip firewall filter
add action=accept chain=input connection-state=established,related,untracked
add action=drop chain=input connection-state=invalid
add action=accept chain=input protocol=icmp
add action=drop chain=input in-interface-list=!LAN
add action=accept chain=forward ipsec-policy=in,ipsec
add action=accept chain=forward ipsec-policy=out,ipsec
add action=fasttrack-connection chain=forward connection-state=\
    established,related hw-offload=yes
add action=accept chain=forward connection-state=\
    established,related,untracked
add action=drop chain=forward connection-state=invalid
add action=drop chain=forward connection-nat-state=!dstnat connection-state=\
    new in-interface-list=WAN
/ip firewall nat
add action=masquerade chain=srcnat ipsec-policy=out,none out-interface-list=\
    WAN
/ip service
set telnet disabled=yes
set ftp disabled=yes
set www disabled=yes
set ssh disabled=yes
set api disabled=yes
set api-ssl disabled=yes
/system clock
set time-zone-name=Asia/Shanghai
/system identity
set name=CRS309-1G-8S+
/system ntp client
set enabled=yes
/system ntp client servers
add address=10.10.0.1
/system routerboard settings
set boot-os=router-os
/system swos
set allow-from-ports=p1,p2,p3,p4,p5,p6,p7,p8,p9 identity=CRS309-1G-8S+ \
    static-ip-address=10.10.0.4
2

As it happens to be, I had a similar case just this week with ONE laptop not being able to connect anymore to a network.
After investigation I noticed DHCP settings on that device were set to manual instead of automatic (and the wrong IP subnet was used).
Obviously the user did not make that change, as usual :laughing:

Already checked that setting on the network device ?
Is it set to automatic ? If you use a manual assigned IP address within the allowed range, does it connect then ?

3

thx,I can confirm enabled dhcp.

4

Image does not load ?

Does it work with a manual assigned IP ?

5

oops,I was wrong,It is not fixed,because the os switch to swos before.
now change to routeros,and assigned 10.10.0.22 to adapter,but the connection status is unreachable.

6

Typical typo error :laughing:

7

I forgot to configure lacp,the problem resolved. :smiley:

8

It still remains a self-inflicted problem, then.

PS it’s not nice to change your post when an answer already has been given …