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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 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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Monitoring and troubleshooting
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This section describes the IGMP/MLD snooping bridge monitoring and troubleshooting options.
To monitor learned multicast database (MDB) entries, use the print command.
Sub-menu: /interface bridge mdb
Property | Description |
|---|---|
| bridge (read-only: name) | Shows the bridge interface the entry belongs to. |
| group (read-only: ipv4 | ipv6 address) | Shows a multicast group address. |
| ports (read-only: name) | Shows the bridge ports which are subscribed to the certain multicast group. |
| vid (read-only: integer) | Shows the VLAN ID for the multicast group, only applies when vlan-filtering is enabled. |
| Code Block | ||
|---|---|---|
| ||
[admin@MikroTik] /interface bridge mdb print
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 |
To monitor the current status of a bridge interface, use the monitor command.
Sub-menu: /interface bridge
Property | Description |
|---|---|
| igmp-querier (none | interface & IPv4 address) | Shows a bridge port and source IP address from the detected IGMP querier. Only shows detected external IGMP querier, local bridge IGMP querier (including IGMP proxy and PIM) will not be displayed. Monitoring value appears only when igmp-snooping is enabled. |
| mld-querier (none | interface & IPv6 address) | Shows a bridge port and source IPv6 address from the detected MLD querier. Only shows detected external MLD querier, local bridge MLD querier will not be displayed. Monitoring value appears only when igmp-snooping is enabled and the bridge has an active IPv6 address. |
| multicast-router (yes | no) | Shows if a multicast router is detected on the bridge interface. Monitoring value appears only when igmp-snooping is enabled. |
| Code Block | ||
|---|---|---|
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[admin@MikroTik] /interface bridge monitor bridge1
state: enabled
current-mac-address: 64:D1:54:C7:3A:59
root-bridge: yes
root-bridge-id: 0x8000.64:D1:54:C7:3A:59
root-path-cost: 0
root-port: none
port-count: 3
designated-port-count: 3
fast-forward: no
multicast-router: no
igmp-querier: ether2 192.168.10.10
mld-querier: ether2 fe80::e68d:8cff:fe39:3824 |
To monitor the current status of bridge ports, use the monitor command.
Sub-menu: /interface bridge port
Property | Description |
|---|---|
| multicast-router (yes | no) | Shows if a multicast router is detected on the port. |
| Code Block |
|---|
[admin@MikroTik] > /interface bridge port monitor [find]
interface: ether2 ether3 ether4
status: in-bridge in-bridge in-bridge
port-number: 1 2 3
role: designated-port designated-port designated-port
edge-port: no yes yes
edge-port-discovery: yes yes yes
point-to-point-port: yes yes yes
external-fdb: no no no
sending-rstp: yes yes yes
learning: yes yes yes
forwarding: yes yes yes
multicast-router: yes no no
hw-offload-group: switch1 switch1 switch1 |
Configuration examples
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