Versions Compared

Old Version 40

changes.mady.by.user Edgars P.

Saved on

compared with

New Version 41

changes.mady.by.user Edgars P.

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

PropertyDescription
add-dhcp-option82 (yes | no; Default: no)Whether to add DHCP Option-82 information (Agent Remote ID and Agent Circuit ID) to DHCP packets. Can be used together with Option-82 capable DHCP server to assign IP addresses and implement policies. This property only has an effect when dhcp-snooping is set to yes.
admin-mac (MAC address; Default: none)Static MAC address of the bridge. This property only has an effect when auto-mac is set to no.
ageing-time (time; Default: 00:05:00)How long a host's information will be kept in the bridge database.
arp (disabled | enabled | local-proxy-arp | proxy-arp | reply-only; Default: enabled)Address Resolution Protocol setting
  • disabled - the interface will not use ARP
  • enabled - the interface will use ARP
  • local-proxy-arp -  the router performs proxy ARP on the interface and sends replies to the same interface
  • proxy-arp - the router performs proxy ARP on the interface and sends replies to other interfaces
  • reply-only - the interface will only reply to requests originated from matching IP address/MAC address combinations which are entered as static entries in the IP/ARP table. No dynamic entries will be automatically stored in the IP/ARP table. Therefore for communications to be successful, a valid static entry must already exist.
arp-timeout (auto | integer; Default: auto)How long the ARP record is kept in the ARP table after no packets are received from IP. Value auto equals to the value of arp-timeout in IP/Settings, default is 30s.
auto-mac (yes | no; Default: yes)Automatically select one MAC address of bridge ports as a bridge MAC address, bridge MAC will be chosen from the first added bridge port. After a device reboots, the bridge MAC can change depending on the port-number.
comment (string; Default: )Short description of the interface.
dhcp-snooping (yes | no; Default: no)Enables or disables DHCP Snooping on the bridge.
disabled (yes | no; Default: no)Changes whether the bridge is disabled.
ether-type (0x9100 | 0x8100 | 0x88a8; Default: 0x8100)Changes the EtherType, which will be used to determine if a packet has a VLAN tag. Packets that have a matching EtherType are considered as tagged packets. This property only has an effect when vlan-filtering is set to yes.
fast-forward (yes | no; Default: yes)Special and faster case of Fast Path which works only on bridges with 2 interfaces (enabled by default only for new bridges). More details can be found in the Fast Forward section.
forward-delay (time; Default: 00:00:15)The time which is spent during the initialization phase of the bridge interface (i.e., after router startup or enabling the interface) in the listening/learning state before the bridge will start functioning normally.
frame-types (admit-all | admit-only-untagged-and-priority-tagged | admit-only-vlan-tagged; Default: admit-all)Specifies allowed frame types on a bridge port. This property only has an effect when vlan-filtering is set to yes.
igmp-snooping (yes | no; Default: no)Enables multicast group and port learning to prevent multicast traffic from flooding all interfaces in a bridge.
igmp-version (2 | 3; Default: 2)Selects the IGMP version in which IGMP membership queries will be generated when the bridge interface is acting as an IGMP querier. This property only has an effect when igmp-snooping and multicast-querier is set to yes.
ingress-filtering (yes | no; Default: no)Enables or disables VLAN ingress filtering, which checks if the ingress port is a member of the received VLAN ID in the bridge VLAN table. By default, VLANs that don't exist in the bridge VLAN table are dropped before they are sent out (egress), but this property allows you to drop the packets when they are received (ingress). Should be used with frame-types to specify if the ingress traffic should be tagged or untagged. This property only has an effect when vlan-filtering is set to yes.
l2mtu (read-only; Default: )L2MTU indicates the maximum size of the frame without a MAC header that can be sent by this interface. The L2MTU value will be automatically set by the bridge and it will use the lowest L2MTU value of any associated bridge port. This value cannot be manually changed.
last-member-interval (time; Default: 1s)

When the last client on the bridge port unsubscribes to a multicast group and the bridge is acting as an active querier, the bridge will send group-specific IGMP/MLD query, to make sure that no other client is still subscribed. The setting changes the response time for these queries. In case no membership reports are received in a certain time period (last-member-interval * last-member-query-count), the multicast group is removed from the multicast database (MDB).

If the bridge port is configured with fast-leave, the multicast group is removed right away without sending any queries.

This property only has an effect when igmp-snooping and multicast-querier is set to yes.

last-member-query-count (integer: 0..4294967295; Default: 2)How many times should last-member-interval pass until the IGMP/MLD snooping bridge stops forwarding a certain multicast stream. This property only has an effect when igmp-snooping and multicast-querier is set to yes.
max-hops (integer: 6..40; Default: 20)Bridge count which BPDU can pass in an MSTP enabled network in the same region before BPDU is being ignored. This property only has an effect when protocol-mode is set to mstp.
max-message-age (time: 6s..40s; Default: 00:00:20)Changes the Max Age value in BPDU packets, which is transmitted by the root bridge. A root bridge sends a BPDUs with Max Age set to max-message-age value and a Message Age of 0. Every sequential bridge will increment the Message Age before sending their BPDUs. Once a bridge receives a BPDU where Message Age is equal or greater than Max Age, the BPDU is ignored. This property only has an effect when protocol-mode is set to stp or rstp.
membership-interval (time; Default: 4m20s)The amount of time after an entry in the Multicast Database (MDB) is removed if no IGMP/MLD membership reports are received on a bridge port. This property only has an effect when igmp-snooping is set to yes.
mld-version (1 | 2; Default: 1)Selects the MLD version in which MLD membership queries will be generated, when the bridge interface is acting as an MLD querier. This property only has an effect when the bridge has an active IPv6 address, igmp-snooping and multicast-querier is set to yes.
mtu (integer; Default: auto)

Maximum transmission unit, by default, the bridge will set MTU automatically and it will use the lowest MTU value of any associated bridge port. The default bridge MTU value without any bridge ports added is 1500. The MTU value can be set manually, but it cannot exceed the bridge L2MTU or the lowest bridge port L2MTU. If a new bridge port is added with L2MTU which is smaller than the actual-mtu of the bridge (set by the mtu property), then manually set value will be ignored and the bridge will act as if mtu=auto is set.

When adding VLAN interfaces on the bridge, and when VLAN is using higher MTU than default 1500, it is recommended to set manually the MTU of the bridge.

multicast-querier (yes | no; Default: no)

Multicast querier generates periodic IGMP/MLD general membership queries to which all IGMP/MLD capable devices respond with an IGMP/MLD membership report, usually a PIM (multicast) router or IGMP proxy generates these queries.

By using this property you can make an IGMP/MLD snooping enabled bridge to generate IGMP/MLD general membership queries. This property should be used whenever there is no active querier (PIM router or IGMP proxy) in a Layer2 network. Without a multicast querier in a Layer2 network, the Multicast Database (MDB) is not being updated, the learned entries will timeout and IGMP/MLD snooping will not function properly.

Only untagged IGMP/MLD general membership queries are generated, IGMP queries are sent with IPv4 0.0.0.0 source address, MLD queries are sent with IPv6 link-local address of the bridge interface. The bridge will not send queries if an external IGMP/MLD querier is detected (see the monitoring values igmp-querier and mld-querier).

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 a bridge interface itself. This property can be used to send IGMP/MLD membership reports to the bridge interface for further multicast routing or proxying. This property only has an effect when igmp-snooping is set to yes.
  • disabled - disabled multicast router state on the bridge interface. Unregistered multicast and IGMP/MLD membership reports are not sent to the bridge interface regardless of what is configured on the bridge interface.
  • permanent - enabled multicast router state on the bridge interface. Unregistered multicast and IGMP/MLD membership reports are sent to the bridge interface itself regardless of what is configured on the bridge interface.
  • temporary-query - automatically detect multicast router state on the bridge interface using IGMP/MLD queries.
name (text; Default: bridgeN)Name of the bridge interface.
priority (integer: 0..65535 decimal format or 0x0000-0xffff hex format; Default: 32768 / 0x8000)Bridge priority, used by R/STP to determine root bridge, used by MSTP to determine CIST and IST regional root bridge. This property has no effect when protocol-mode is set to none.
protocol-mode (none | rstp | stp | mstp; Default: rstp)Select Spanning tree protocol (STP) or Rapid spanning tree protocol (RSTP) to ensure a loop-free topology for any bridged LAN. RSTP provides a faster spanning tree convergence after a topology change. Select MSTP to ensure loop-free topology across multiple VLANs. Since RouterOS v6.43 it is possible to forward Reserved MAC addresses that are in the 01:80:C2:00:00:0X range, this can be done by setting the protocol-mode to none.
pvid (integer: 1..4094; Default: 1)Port VLAN ID (pvid) specifies which VLAN the untagged ingress traffic is assigned to. It applies e.g. to frames sent from bridge IP and destined to a bridge port. This property only has an effect when vlan-filtering is set to yes.
querier-interval (time; Default: 4m15s)Changes the timeout period for detected querier and multicast-router ports. This property only has an effect when igmp-snooping is set to yes.
query-interval (time; Default: 2m5s)Changes the interval on how often IGMP/MLD general membership queries are sent out when the bridge interface is acting as an IGMP/MLD querier. The interval takes place when the last startup query is sent. This property only has an effect when igmp-snooping and multicast-querier is set to yes.
query-response-interval (time; Default: 10s)The setting changes the response time for general IGMP/MLD queries when the bridge is active as an IGMP/MLD querier. This property only has an effect when igmp-snooping and multicast-querier is set to yes.
region-name (text; Default: )MSTP region name. This property only has an effect when protocol-mode is set to mstp.
region-revision (integer: 0..65535; Default: 0)MSTP configuration revision number. This property only has an effect when protocol-mode is set to mstp.
startup-query-count (integer: 0..4294967295; Default: 2)Specifies how many times general IGMP/MLD queries must be sent when bridge interface is enabled or active querier timeouts. This property only has an effect when igmp-snooping and multicast-querier is set to yes.
startup-query-interval (time; Default: 31s250ms)Specifies the interval between startup general IGMP/MLD queries. This property only has an effect when igmp-snooping and multicast-querier is set to yes.
transmit-hold-count (integer: 1..10; Default: 6)The Transmit Hold Count used by the Port Transmit state machine to limit the transmission rate.
vlan-filtering (yes | no; Default: no)Globally enables or disables VLAN functionality for the bridge.

...