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[admin@MikroTik] /ip neighbor print # INTERFACE ADDRESS MAC-ADDRESS IDENTITY VERSION BOARD 0 ether13 192.168.33.2 00:0C:42:00:38:9F MikroTik 5.99 RB1100AHx2 1 ether11 1.1.1.4 00:0C:42:40:94:25 test-host 5.8 RB1000 2 Local 10.0.11.203 00:02:B9:3E:AD:E0 c2611-r1 Cisco I... 3 Local 10.0.11.47 00:0C:42:84:25:BA 11.47-750 5.7 RB750 4 Local 10.0.11.254 00:0C:42:70:04:83 tsys-sw1 5.8 RB750G 5 Local 10.0.11.202 00:17:5A:90:66:08 c7200 Cisco I... |
Sub-menu: /ip neighbor
Property | Description |
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address (IP) | The highest IP address configured on a discovered device |
address6 (IPv6) | IPv6 address configured on a discovered device |
age (time) | Time interval since last discovery packet |
discovered-by (cdp|lldp|mndp) | Shows the list of protocols the neighbor has been discovered by. The property is available since RouterOS version 7.7. |
board (string) | RouterBoard model. Displayed only to devices with installed RouterOS |
identity (string) | Configured system identity |
interface (string) | Interface name to which discovered device is connected |
interface-name (string) | Interface name on the neighbor device connected to the L2 broadcast domain. Applies to CDP. |
ipv6 (yes | no) | Shows whether the device has IPv6 enabled. |
mac-address (MAC) | Mac address of the remote device. Can be used to connect with mac-telnet. |
platform (string) | Name of the platform. For example "MikroTik", "cisco", etc. |
software-id (string) | RouterOS software ID on a remote device. Applies only to devices installed with RouterOS. |
system-caps (string) | System capabilities reported by the Link-Layer Discovery Protocol (LLDP). |
system-caps-enabled (string) | Enabled system capabilities reported by the Link-Layer Discovery Protocol (LLDP). |
unpack (none|simple|uncompressed-headers|uncompressed-all) | Shows the discovery packet compression type. |
uptime (time) | Uptime of remote device. Shown only to devices installed with RouterOS. |
version (string) | Version number of installed software on a remote device |
Note |
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Starting from RouterOS v6.45, the number of neighbor entries are limited to (total RAM in megabytes)*16 per interface to avoid memory exhaustion. |
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Property | Description |
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discover-interface-list (string; Default: static) | Interface list on which members the discovery protocol will run on |
lldp-mac-phy-config (yes | no; Default: no) | Whether to send MAC/PHY Configuration/Status TLV in LLDP, which indicates the interface capabilities, current setting of the duplex status, bit rate, and auto-negotiation. Only applies to the Ethernet interfaces. While TLV is optional in LLDP, it is mandatory when sending LLDP-MED, meaning this TLV will be included when necessary even though the property is configured as disabled. |
lldp-max-frame-size (yes | no; Default: no) | Whether to send Maximum Frame Size TLV in LLDP, which indicates the maximum frame size capability of the interface in bytes ( |
lldp-poe-power (yes | no; Default: yes) | Two specific TLVs facilitate Power over Ethernet (PoE) management between Power Sourcing Equipment (PSE) and Powered Devices (PD):
The The transmission of LLDP-MED Organizationally Specific Extended Power via MDI TLV is not configurable. It is automatically included in outgoing LLDP-MED packets when the remote device has transmitted LLDP-MED capability of receiving power. These TLVs are relevant only for Ethernet interfaces that support PoE-Out. The setting is available since RouterOS version 7.15, and it replaces PoE-out port |
lldp-med-net-policy-vlan (integer 0..4094; Default: disabled) | Advertised VLAN ID for LLDP-MED Network Policy TLV. This allows assigning a VLAN ID for LLDP-MED capable devices, such as VoIP phones. The TLV will only be added to interfaces where LLDP-MED capable devices are discovered. Other TLV values are predefined and cannot be changed:
When used together with the bridge interface, the (R/M)STP protocol should be enabled with Additionally, other neighbor discovery protocols (e.g. CDP) should be excluded using |
mode (rx-only | tx-only | tx-and-rx; Default: tx-and-rx) | Selects the neighbor discovery packet sending and receiving mode. The setting is available since RouterOS version 7.7. |
protocol (cdp | lldp | mndp; Default: cdp,lldp,mndp) | List of used discovery protocols |
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Depending on RouterOS configuration, different type-length-value (TLV) can be sent in the LLDP message, this includes:
- Chassis subtype ID (MAC address)
- Port subtype ID (interface name)
- Time To Live
- System name Name (system identity)
- System description Description (platform - MikroTik, software version - RouterOS version, hardware name - RouterBoard name)
- Management address Address (all IP addresses configured on the port)
- System capabilities Capabilities (enabled system capabilities, e.g. bridge or router)
- Port Description (combined interface name like "bridge/ether1" if the sending interface is part of bridge or bond, or interface name same as Port ID)
- IEEE 802.3 MAC/PHY Configuration/Status
- IEEE 802.3 Power Via MDI
- IEEE 802.3 Maximum Frame Size
- LLDP-MED Media Capabilities (list of MED capabilities)
- LLDP-MED Network Policy (assigned VLAN ID for voice traffic)
- LLDP-MED Extended Power via MDI
- Port Extension (Port Extender and Controller Bridge advertisement)
- End of LLDPDU
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