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RcRaCk2k
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Neighbor Discovery Issue | v6.49.2

Mon Dec 06, 2021 3:41 pm

Hi Guys,

having an issue with "Neighbor Discovery" when doing VLAN with ROS as it should be.

I can not see the CDPs from the Mikrotik-CPE when doing VLAN-Filtering (Bridge VLAN configuration - the NEW way to do this) instead of adding VLAN-Interface to SFP-Interface and bridge it together with ether1 (the old way to do this).

Only when setting frame-types=all and adding VLAN ID 1 (CPE-Port-PVID) and add a VLAN-Interface ID 1 tagged on BRIDGE1 (Switch) i can see the devices in Neighbor Discovery but only on "vlan1"-Interface (vlan1 is assigned as VLAN-Interface of bridge1).

NEW vs OLD VLAN-Config.jpg

Switch CRS326-24S+2Q+ running 6.49.1:
/interface bridge
	add admin-mac=C4:AD:34:E3:73:70 auto-mac=no comment=defconf name=bridge protocol-mode=none pvid=1580 vlan-filtering=yes
	
/interface bridge port
	add bridge=bridge ingress-filtering=yes frame-types=admit-only-vlan-tagged interface=sfp-sfpplus6.Wohnung-14.Draghici
	add bridge=bridge ingress-filtering=yes frame-types=admit-only-vlan-tagged interface=sfp-sfpplus7.Wohnung-1.Otter
	add bridge=bridge ingress-filtering=yes frame-types=admit-only-vlan-tagged interface=sfp-sfpplus10.Wohnung-8.Sylaender
	add bridge=bridge ingress-filtering=yes frame-types=admit-only-vlan-tagged interface=sfp-sfpplus11.Wohnung-3.Seil
	
/interface bridge vlan
	add bridge=bridge vlan-ids=1580 tagged="\
		sfp-sfpplus24.Uplink,\
		sfp-sfpplus7.Wohnung-1.Otter,\
		sfp-sfpplus11.Wohnung-3.Seil,\
		sfp-sfpplus10.Wohnung-8.Sylaender"

CPE hEX S v6.49.2:
/interface bridge settings
	set allow-fast-path=no use-ip-firewall=yes use-ip-firewall-for-vlan=yes

/interface bridge
	add add-dhcp-option82=yes dhcp-snooping=yes fast-forward=no name=bridge1 protocol-mode=none pvid=1580 vlan-filtering=yes
	
/interface bridge port
	add bridge=bridge1 hw=no interface=ether1 pvid=1580
	add bridge=bridge1 hw=no interface=sfp1 trusted=yes
	
/interface bridge vlan
	add bridge=bridge1 tagged=sfp1 untagged=ether1 vlan-ids=1580
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