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Property | Description |
|---|---|
| fast-leave (yes | no; Default: no) | Enables IGMP/MLD fast leave feature on the bridge port. The bridge will stop forwarding multicast traffic to a bridge port when an IGMP/MLD leave message is received. This property only has an effect when igmp-snooping is set to yes. |
| multicast-router (disabled | permanent | temporary-query; Default: temporary-query) | A multicast router port is a port where a multicast router or querier is connected. On this port, unregistered multicast streams and IGMP/MLD membership reports will be sent. This setting changes the state of the multicast router for bridge ports. This property can be used to send IGMP/MLD membership reports and multicast streams to certain bridge ports for further multicast routing or proxying. This property only has an effect when igmp-snooping is set to yes.
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| unknown-multicast-flood (yes | no; Default: yes) | Changes the multicast flood option on bridge port, only controls the egress traffic. When enabled, the bridge allows flooding multicast packets to the specified bridge port, but when disabled, the bridge restricts multicast traffic from being flooded to the specified bridge port. The setting affects all multicast traffic, this includes non-IP, IPv4, IPv6 and the link-local multicast ranges (e.g. 224.0.0.0/24 and ff02::1). Note that when When using this setting together with |
Sub-menu: /interface bridge mdb
Property | Description |
|---|---|
| bridge (name; Default: ) | The bridge interface to which the MDB entry is going to be assigned. |
| disabled (yes | no; Default: no) | Disables or enables static MDB entry. |
| group (ipv4 | ipv6 address; Default: ) | The IPv4 or IPv6 multicast address. Static entries for link-local multicast groups 224.0.0.0/24 and ff02::1 cannot be created, as these packets are always flooded on all ports and VLANs. |
| ports (name; Default: ) | The list of bridge ports to which the multicast group will be forwarded. |
| vid (integer: 1..4094; Default: ) | The VLAN ID on which the MDB entry will be created, only applies when vlan-filtering is enabled. When VLAN ID is not specified, the entry will work in shared-VLAN mode and dynamically apply on all defined VLAN IDs for particular ports. |
Monitoring and troubleshooting
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| Code Block | ||
|---|---|---|
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[admin@MikroTik] /interface bridge mdb print Flags: D - DYNAMIC Columns: GROUP, VID, ON-PORTS, BRIDGE # GROUP VID PORTS BRIDGE 229.1.1.2 10 ether3 bridge1 229.2.2.2 10 ether3 bridge1 ff1e::2010 10 ether3 bridge1 ff1e::2011 10 ether3 bridge1 VID ON-PORTS BRIDGE 0 D ff02::2 1 bridge1 bridge1 1 D ff02::6a 1 bridge1 bridge1 2 D ff02::1:ff00:0 1 bridge1 bridge1 3 D ff02::1:ff01:6a43 1 bridge1 bridge1 4 D 229.1.1.1 10 ether2 bridge1 5 D 229.2.2.2 10 ether3 bridge1 ether2 6 D ff02::2 10 ether5 bridge1 ether3 ether2 ether4 |
To monitor the current status of a bridge interface, use the monitor command.
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| Code Block | ||
|---|---|---|
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/interface bridge port set [find interface=ether3] ingress-filtering=yes frame-types=admit-only-untagged-and-priority-tagged set [find interface=ether4] ingress-filtering=yes frame-types=admit-only-untagged-and-priority-tagged set [find interface=ether5] ingress-filtering=yes frame-types=admit-only-untagged-and-priority-tagged set [find interface=sfp-sfpplus1] ingress-filtering=yes |
Static MDB entries
Since RouterOS version 7.7, it is possible to create static MDB entries for IPv4 and IPv6 multicast groups. For example, to create a static MDB entry for multicast group 229.10.10.10 on ports ether2 and ether3 on VLAN 10, use the command below:
| Code Block | ||
|---|---|---|
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/interface bridge mdb add bridge=bridge1 group=229.10.10.10 ports=ether2,ether3 vid=10 |
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