Hi,
I have a CRS326 (B) behind another CRS326 (A)
Bridge filtering is activated on Switch A and VLAN44 is entered for SwitchB and for the uplink.
A router with vlan44 and IP 10.9.0.3/24 is attached to this switch on the uplink via Vlan44
At Switch B I can reach the router via Layer3. From the router via Layer3 also the switch B. So far so good. The MAC address of switch B is entered in the router’s ARP.
BUT: after a while, the MAC address on the router for Switch B and on Switch B for the router is out and Layer3 no longer goes from the router to Switch B. Only when I try from Switch B via Layer2-MAc-telnet ICMP to Make router, everything works again.
For a few minutes.
If I set everything up so that there is another router between switch A and switch B and put the Vlan44 in a bridge, everything runs permanently.
What can be wrong with the programming on Switch B?
/interface bridge
add admin-mac=48:A9:8A:B4:BD:BA auto-mac=no igmp-snooping=yes \
ingress-filtering=no name=bridge1 protocol-mode=none pvid=44 \
vlan-filtering=yes
/interface ethernet
set [ find default-name=qsfpplus1-1 ] disabled=yes
set [ find default-name=qsfpplus1-2 ] disabled=yes
set [ find default-name=qsfpplus1-3 ] disabled=yes
set [ find default-name=qsfpplus1-4 ] disabled=yes
set [ find default-name=qsfpplus2-1 ] disabled=yes
set [ find default-name=qsfpplus2-2 ] disabled=yes
set [ find default-name=qsfpplus2-3 ] disabled=yes
set [ find default-name=qsfpplus2-4 ] disabled=yes
set [ find default-name=sfp-sfpplus1 ] name=sfp-sfpplus1-uplink
set [ find default-name=sfp-sfpplus2 ] name=sfp-sfpplus2-frei
set [ find default-name=sfp-sfpplus3 ] name=\
"sfp-sfpplus3-20"
/interface vlan
add interface=bridge1 name=vlan44-mgnt vlan-id=44
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip hotspot profile
set [ find default=yes ] html-directory=hotspot
/port
set 0 name=serial0
/system logging action
set 1 disk-file-name=log
/user group
add name=ip policy="local,telnet,reboot,read,write,test,winbox,!ssh,!ftp,!poli\
cy,!password,!web,!sniff,!sensitive,!api,!romon,!rest-api"
/interface bridge port
add bridge=bridge1 fast-leave=yes interface=sfp-sfpplus1-uplink
add bridge=bridge1 broadcast-flood=no fast-leave=yes interface=\
sfp-sfpplus2-frei multicast-router=disabled pvid=406 \
unknown-unicast-flood=no
add bridge=bridge1 broadcast-flood=no fast-leave=yes interface=\
"sfp-sfpplus3-20" multicast-router=disabled \
pvid=406 unknown-unicast-flood=no
/interface ethernet switch l3hw-settings advanced
set neigh-discovery-interval=1m31s neigh-keepalive-interval=5s \
route-index-delay-max=5s route-index-delay-min=100ms \
route-queue-limit-high=512 route-queue-limit-low=16
/ipv6 settings
set disable-ipv6=yes forward=no
/interface bridge vlan
add bridge=bridge1 tagged=bridge1,sfp-sfpplus1-uplink vlan-ids=44
add bridge=bridge1 tagged=sfp-sfpplus1-uplink,sfp-sfpplus2-frei vlan-ids=406
/interface ethernet switch rule
add ports=sfp-sfpplus1-uplink switch=switch1
add mac-protocol=pppoe-discovery ports=\
"sfp-sfpplus2-frei,sfp-sfpplus3-20" switch=\
switch1
add mac-protocol=pppoe ports=\
"sfp-sfpplus2-frei,sfp-sfpplus3-20" switch=\
switch1
add new-dst-ports="" ports=\
"sfp-sfpplus2-frei,sfp-sfpplus3-20" switch=\
switch1
/ip address
add address=10.9.0.2/24 interface=vlan44-mgnt network=10.9.0.0
/ip route
add disabled=no distance=1 dst-address=0.0.0.0/0 gateway=10.9.0.1 pref-src="" \
routing-table=main scope=30 suppress-hw-offload=no target-scope=10
/system clock
set time-zone-autodetect=no time-zone-name=Europe/Berlin
/system identity
set name=switchb
/system note
set show-at-login=no
/system ntp client
set enabled=yes
/system ntp client servers
add address=10.0.250.13
/system routerboard settings
set auto-upgrade=yes boot-os=router-os enter-setup-on=delete-key
/tool graphing interface
add
/tool graphing resource
add
many thanks for your help