Filter
Top Products
AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers 99
RouterOS v3 Configuration and User Guide
Related Topics
• IP Addresses and ARP
• Routes, Equal Cost Multipath Routing, Policy Routing
• Log Management
Description
Open Shortest Path First protocol is a link-state routing protocol. It's uses a link-state algorithm to
build and calculate the shortest path to all known destinations. The shortest path is calculated using the
Dijkstra algorithm. OSPF distributes routing information between the routers belonging to a single
autonomous system (AS). An AS is a group of routers exchanging routing information via a common
routing protocol.
In order to deploy the OSPF all routers it will be running on should be configured in a coordinated
manner.
It also means that the routers should have the same MTU for all the networks advertised by the OSPF
protocol
The OSPF protocol is started after you will add a record to the OSPF network list. The routes learned by
the OSPF protocol are installed in the routes table list with the distance of 110.
5.3.2 General Setup
Submenu level: /routing ospf
Description
In this section you will learn how to configure basic OSPF settings.
Property Description
distribute-default (never | if-installed-as-type-1 | if-installed-as-type-2 | always-as-type-1 | always-as-
type-2; default: never) - specifies how to distribute default route. Should be used for ABR (Area Border
router) or ASBR (Autonomous System boundary router) settings
never - do not send own default route to other routers
if-installed-as-type-1 - send the default route with type 1 metric only if it has been installed (a static
default route, or route added by DHCP, PPP, etc.)
if-installed-as-type-2 - send the default route with type 2 metric only if it has been installed (a static
default route, or route added by DHCP, PPP, etc.)
always-as-type-1 - always send the default route with type 1 metric
always-as-type-2 - always send the default route with type 2 metric
metric-bgp (integer; default: 20) - specifies the cost of the routes learned from BGP protocol
metric-connected (integer; default: 20) - specifies the cost of the routes to directly connected
networks
metric-default (integer; default: 1) - specifies the cost of the default route
metric-rip (integer; default: 20) - specifies the cost of the routes learned from RIP protocol
metric-static (integer; default: 20) - specifies the cost of the static routes
redistribute-bgp (as-type-1 | as-type-2 | no; default: no) - with this setting enabled the router will
redistribute the information about all routes learned by the BGP protocol
redistribute-connected (as-type-1 | as-type-2 | no; default: no) - if set, the router will redistribute the
information about all connected routes, i.e., routes to directly reachable networks
redistribute-rip (as-type-1 | as-type-2 | no; default: no) - with this setting enabled the router will
redistribute the information about all routes learned by the RIP protocol
redistribute-static (as-type-1 | as-type-2 | no; default: no) - if set, the router will redistribute the
information about all static routes added to its routing database, i.e., routes that have been created using
the /ip route add command
router-id (IP address; default: 0.0.0.0) - OSPF Router ID. If not specified, OSPF uses the largest IP
address configured on the interfaces as its router ID