Manual:IP/Neighbor discovery
Applies to RouterOS: v5 +
Overview
MikroTik Neighbor Discovery protocol (MNDP) allows to "find" other devices compatible with MNDP or CDP (Cisco Discovery Protocol) in Layer2 broadcast domain.
Neigbors
Sub-menu: /ip neighbor
This sub-menu lists all discovered neighbors in Layer-2 broadcast domain. It shows to which interface neighbor is connected, shows it's ip/MAC addresses and several Mikrotik related parameters. List is read-only.
As an example, you can see several RouterBoards and two Cisco routers:
[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...
Properties
| Property | Description |
|---|---|
| address (IP) | 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 |
| 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 device has IPv6 enabled. |
| mac-address (MAC) | Mac address of 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. |
| unpack (none|simple|uncompressed-headers|uncompressed-all) | Shows 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 |
Discovery configuration
Sub-menu: /ip neighbor discovery
In this menu is possible to change state of the interface whether it participates in neighbor discovery or not. If it does, it will send out basic information about system and process received discovery packets broadcasted in Layer-2 network. List of interfaces is automatically managed by RouterOS. Items in the list cannot be removed nor added. Default settings depend on interface type and current state.
| Property | Description |
|---|---|
| comment (string; Default: ) | Short description of an entry |
| disabled (yes | no; Default: ) | Whether item is disabled and do not participate in sending/receiving of discovery information. Added in v5.x |
| discover (yes | no; Default: ) | Whether to participate in sending/receiving of discovery information. Since v5.x left for compatibility with older scripts. |
Sub-menu: /ip neighbor discovery settings
| Property | Description |
|---|---|
| default (yes | no; Default: yes) | Whether to allow sending/receiving discovery information on dynamic interfaces. Added in v6.x |