Manual:Interface/Ethernet
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Applies to RouterOS: v3, v4+
Summary
Sub-menu: /interface ethernet
Standards: IEEE 802.3
MikroTik RouterOS supports various types of Ethernet interfaces.
Properties
| Property | Description |
|---|---|
| arp (disabled | enabled | proxy-arp | reply-only; Default: enabled) | Address Resolution Protocol mode |
| auto-negotiation (yes | no; Default: yes) | When enabled, the interface "advertises" its maximum capabilities to achieve the best connection possible. Note: Auto-negotiation must be disabled on both ends, otherwise Ethernets may not work properly. Note2: Gigabit link cannot work with auto-negotiation disabled. |
| bandwidth (integer/integer; Default: unlimited/unlimited) | Sets max rx/tx bandwidth that will be handled by an interface. |
| cable-setting (default | short | standard; Default: default) | changes the cable length setting (only applicable to NS DP83815/6 cards) |
| disable-running-check (yes | no; Default: yes) | Disable running check. If this value is set to 'no', the router automatically detects whether the NIC is connected with a device in the network or not. |
| full-duplex (yes | no; Default: yes) | Defines whether the transmission of data appears in two directions simultaneously |
| l2mtu (integer; Default: ) | Layer2 Maximum transmission unit. Read more>> |
| mac-address (MAC; Default: ) | Media Access Control number of an interface. |
| master-port (name | none; Default: none) | Sets switch group master interface |
| mdix-enable (yes | no; Default: ) | Whether the MDI/X auto crosscable correction feature is enabled for the port |
| mtu (integer; Default: 1500) | Layer3 Maximum transmission unit |
| name (string; Default: ) | Name of an interface |
| speed (10Mbps | 100Mbps | 1Gbps; Default: max available) | Sets the data transmission speed of the interface. By default, this value is the maximal data rate supported by the interface |
Read-only properties
| Property | Description |
|---|---|
| running (yes | no) | Whether interface is running. Note that some interface does not have running check and they are always reported as "running" |
| rx-1024-1518 (integer) | Total count of received 1024 to 1518 byte packets |
| rx-128-255 (integer) | Total count of received 128 to 255 byte packets |
| rx-1519-max (integer) | Total count of received packets larger than 1519 bytes |
| rx-256-511 (integer) | Total count of received 256 to 511 byte packets |
| rx-512-1023 (integer) | Total count of received 512 to 1023 byte packets |
| rx-64 (integer) | Total count of received 64 byte packets |
| rx-65-127 (integer) | Total count of received 65 to 127 byte packets |
| rx-align-error (integer) | Total count of received align error messages |
| rx-broadcast (integer) | Total count of received broadcast packets |
| rx-bytes (integer) | Total count of received bytes |
| rx-fcs-error (integer) | Total count of received frames with incorrect checksum |
| rx-fragment (integer) | Total count of received fragmented frames |
| rx-multicast (integer) | Total count of received multicast packets |
| rx-overflow (integer) | |
| rx-pause (integer) | Amount of received pause frames |
| rx-runt (integer) | Amount of received frames shorter than the minimum 64 bytes but with a valid CRC |
| rx-too-long (integer) | |
| slave (yes | no) | Whether interface is configured as a slave of another interface (for example Bonding) |
| switch (integer) | ID to which switch chip interface belongs to. |
| tx-1024-1518 (integer) | |
| tx-128-255 (integer) | |
| tx-1519-max (integer) | |
| tx-256-511 (integer) | |
| tx-512-1023 (integer) | |
| tx-64 (integer) | |
| tx-65-127 (integer) | |
| tx-align-error (integer) | |
| tx-broadcast (integer) | |
| tx-bytes (integer) | |
| tx-fcs-error (integer) | |
| tx-fragment (integer) | |
| tx-multicast (integer) | |
| tx-overflow (integer) | |
| tx-pause (integer) | |
| tx-runt (integer) | |
| tx-too-long (integer) |
Menu specific commands
| Property | Description |
|---|---|
| blink ([id, name]) | Blink Ethernet leds |
| monitor ([id, name]) | Monitor ethernet status. Read more>> |
| reset-counters ([id, name]) | Reset stats counters. Read more>> |
| reset-mac ([id, name]) | Reset MAC address to manufacturers default. |
Monitor
/interface ethernet monitor command prints out current link, rate and duplex status of an interface.
Properties:
| Property | Description |
|---|---|
| auto-negotiation (done | incomplete) | Current auto negotiation status.
|
| default-cable-settings (short | standard) | default cable length setting (only applicable to NS DP83815/6 cards)
|
| full-duplex (yes | no) | Whether transmission of data occurs in two directions simultaneously |
| rate (10Mbps | 100Mbps | 1Gbps) | Actual data rate of the connection |
| status (link-ok | no-link | unknown) | Current link status of an interface
|
Example output of ethernet status:
[admin@MikroTik] /interface ethernet> monitor ether1
status: link-ok
auto-negotiation: done
rate: 1Gbps
full-duplex: yes
Stats
RouterOS v3.22 introduces a new command:
/interface ethernet print stats
This command will display all kinds of other statistics if the interface is supporting them (currently only RB450G ether2-ether5, RB750 ether2-ether5, RB750G ether1-ether5 and also RB1100 ether1-ether10). Complete list of properties can be found in section above
For example, output of ethernet stats on RB450G:
[admin@MikroTik] /interface ethernet> print stats
name: ether1-gateway ether2-local ether3-local ether4-local ether5-local
rx-broadcast: 22 31 3666 11
rx-pause: 0 0 0 0
rx-multicast: 4 7 1423 5
rx-fcs-error: 0 0 2 0
rx-align-error: 0 0 0 0
rx-runt: 0 0 0 0
rx-fragment: 0 0 1 0
rx-64: 0 0 0 0
rx-65-127: 8 14 21598 10
rx-128-255: 0 0 0 0
rx-256-511: 18 24 2245 6
rx-512-1023: 28926 7649 371938 24476
rx-1024-1518: 0 0 0 0
rx-1519-max: 0 0 0 0
rx-too-long: 0 0 0 0
rx-overflow: 0 0 0 0
rx-bytes: 15337844 4063737 199738064 12975401
tx-broadcast: 13 13 1496 8
tx-pause: 0 0 0 0
tx-multicast: 13 13 1496 8
tx-underrun: 0 0 0 0
tx-64: 0 0 0 0
tx-65-127: 26 26 2992 16
tx-128-255: 0 0 0 0
tx-256-511: 0 0 0 0
tx-512-1023: 0 0 0 0
tx-1024-1518: 0 0 0 0
tx-1519-max: 0 0 0 0
tx-too-long: 0 0 0 0
tx-collision: 0 0 0 0
tx-excessive-collision: 0 0 0 0
tx-multiple-collision: 0 0 0 0
tx-single-collision: 0 0 0 0
tx-excessive-deferred: 0 0 0 0
tx-deferred: 0 0 0 0
tx-late-collision: 0 0 0 0
tx-bytes: 2561 2561 294712 1576
Switch
Sub-menu: /interface ethernet switch
This submenu allows to configure certain RouterBoard switch chip feature. Read more >>.
PoE out
PoE out settings are only available on RouterBOARD devices that has this hardware feature present. No status information if power is applied to the port or not is not available. Only visual clue that is provided is red LED in addition to green Ethernet activity led.
Feature can be configured using setting in /interface ethernet menu, for example, turning poe-out on ether2 interface off:
/interface ethernet set ether2 poe-out=off
Note: PoE pit on interface will return to previous state it was when board was operational.
Note: PoE out is controlled separately from RouterOS and will return to state regardless of state of RouterOS on RouterBOARD
Possible configuration modes:
- off - all detection and power is turned off for this port. It is safe setting and is default for all RouterBOARDs shipped
- auto - board will attempt to detect if power can be applied on the port. For power-on to happen there should be resistance on spare pairs in range from 19kΩ to 26.5kΩ.
- on - similar to auto setting just upper bound of detection range is removed.
When port is powered on
- No detection if connected device can accept PoE is done;
- When port is powered on - port overload and short detection is turned on;
- Note| If short is detected power on all ports will be turned on.
Warning: {{{1}}}
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