LDP Instance
MikroTik RouterOS implements Label Distribution Protocol (RFC 3036, RFC 5036 and RFC 7552) for IPv4 and IPv6 address families. LDP is a protocol that performs the set of procedures and exchange messages by which Label Switched Routers (LSRs) establish Label Switched Paths (LSPs) through a network by mapping network-layer routing information directly to data-link layer switched paths.
Sub-menu: /mpls
Properties
| Property | Description |
|---|---|
| afi (ip | ipv6; Default: ) | For which address family routes to do label mapping. |
| comments (string; Default: ) | Short description of the entry |
| disabled (yes | no; Default: no) | |
| distribute-for-default (yes | no; Default: no) | Defines whether to map label for the default route. |
| hop-limit (integer[0..255]; Default: ) | Max hop limit used for loop detection. Works in combination with loop-detect property. |
| loop-detect (yes | no; Default: ) | Defines whether to run LSP loop detection. Will not work correctly if not enabled on all LSRs. Should be used only on non-TTL networks such as ATM. |
| lsr-id | Unique label switching router's ID. |
| path-vector-limit | Max path vector limit used for loop detection. Works in combination with loop-detect property. |
| transport-addresses | Specifies LDP session connections origin addresses and also advertise these addresses as transport address to LDP neighbors. |
| use-explicit-null (yes | no; Default: no) | Whether to distribute explicit-null label bindings. |
| vrf (name; Default: main) | Name of the VRF table this instance will operate on. |
Interface
Sub-menu: /mpls ldp interface
| Property | Description |
|---|---|
| afi (ip | ipv6; Default: ) | Address families that can be used by LDP transport. |
| accept-dynamic-neighbors (yes | no; Default:) | Defines whether to discover neighbors dynamically or use only statically configured in LDP neighbors menu |
| comments (string; Default: ) | Short description of the entry |
| disabled (yes | no; Default: no) | |
| hello-interval (string; Default: ) | The interval between hello packets that the router sends out on specified interface/s. Default value is 5s. |
| hold-time (string; Default: ) | Specifies the interval after which a neighbour discovered on the interface is declared as not reachable. Default value is 15s. |
| interface (string; Default: ) | Name of the interface or interface list where LDP will be listening. |
| transport-addresses (List of IPs; Default: ) | Used transport addresses if differs from LDP Instance settings. |
Neighbors
Sub-menu: /mpls ldp neighbor
This
Accept Filter
Sub-menu: /mpls ldp accept-filter
This
Advertise Filter
Sub-menu: /mpls ldp advertise-filter
This
Local Mapping
Sub-menu: /mpls local-mapping
This sub-menu shows labels bound to the routes locally in the router. In this menu also static mappings can be configured if there is no intention to use LDP dynamically.
Properties
| Property | Description |
|---|---|
| comments (string; Default: ) | Short description of the entry |
| disabled (yes | no; Default: no) | |
| dst-address (IP/Mask; Default: ) | Destination prefix the label is assigned to. |
| label (integer[0..1048576] | alert | expl-null | expl-null6 | impl-null | none; Default: ) | Label number assigned to destination. |
| vrf (name; Default: main) | Name of the VRF table this mapping belongs to. |
Read-only Properties
| Property | Description |
|---|---|
| adv-path () | |
| inactive (yes | no) | Whether binding is active and can be selected as candidate for forwarding. |
| dynamic (yes | no) | Whether entry was dynamically added |
| egress (yes | no) | |
| gateway (yes | no) | Whether destination is reachable through the gateway. |
| local (yes | no) | Whether destination is locally reachable on the router |
| peers (IP:label_space) | IP address and label space of the peer to which this entry was advertised. |
Remote Mapping
Sub-menu: /mpls remote-mapping
Sub-menu shows label bindings for routes received from other routers. Static mapping can be configured if there is no intention to use LDP dynamically. This table is used to build Forwarding Table
Properties
| Property | Description |
|---|---|
| comments (string; Default: ) | Short description of the entry |
| disabled (yes | no; Default: no) | |
| dst-address (IP/Mask; Default: ) | Destination prefix the label is assigned to. |
| label (integer[0..1048576] | alert | expl-null | expl-null6 | impl-null | none; Default: ) | Label number assigned to destination. |
| nexthop (IP; Default:) | |
| vrf (name; Default: main) | Name of the VRF table this mapping belongs to. |
Read-only Properties
| Property | Description |
|---|---|
| inactive (yes | no) | Whether binding is active and can be selected as candidate for forwarding. |
| dynamic (yes | no) | Whether entry was dynamically added |
| path (string) |