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Interfaces to match. Accepts specific interface name or the name of the interface list.

network (IP prefix)the network prefix associated with the area. OSPF will be enabled on all interfaces that has at least one address falling within this range. Note that the network prefix of the address is used for this check (i.e. not the local address). For point-to-point interfaces this means the address of the remote endpoint.
prefix-list (name)Will try to match interfaces to all networks associated with the specified address list.

Assigned Parameters

area (name; mandatory)The OSPF area to which matching interface will be associated.
auth (simple | md5)Specifies authentication method for OSPF protocol messages.
  • simple - plain text authentication
  • md5 - keyed Message Digest 5 authentication

If the parameter is unset, then authentication is not used.

auth-id (integer)The key id is used to calculate message digest (used only when MD5 authentication is enabled). Value should match on all OSPF routers from the same region.
authentication-key (string)The authentication key to be used for simple or MD5 authentication methods.
cost(integer [0..65535])Interface cost expressed as link state metric.
dead-interval (time; Default: 40s)Specifies the interval after which a neighbour is declared as dead. This interval is advertised in hello packets. This value must be the same for all routers on a specific network, otherwise adjacency between them will not form
disabled(yes | no)
hello-interval (time; Default: 10s)The interval between HELLO packets that the router sends out this interface. The smaller this interval is, the faster topological changes will be detected, tradeoff is more OSPF protocol traffic. This value must be the same for all the routers on a specific network, otherwise adjacency between them will not form.
instance-id (integer [0..255]; Default: 0)
passive ()If enabled, then do not send or receive OSPF traffic on the matching interfaces
prefix-list (name)Name of the address list containing networks that should be advertised to v3 interface.
priority (integer: 0..255; Default: 128)Router's priority. Used to determine the designated router in a broadcast network. The router with highest priority value takes precedence. Priority value 0 means the router is not eligible to become designated or backup designated router at all.
retransmit-interval (time; Default: 5s)Time interval the lost link state advertisement will be resent. When a router sends a link state advertisement (LSA) to its neighbour, the LSA is kept until the acknowledgment is received. If the acknowledgment was not received in time (see transmit-delay), router will try to retransmit the LSA.
transmit-delay (time; Default: 1s)Link state transmit delay is the estimated time it takes to transmit a link state update packet on the interface.
type (broadcast | nbma | ptp | ptmp | ptp-unnumbered | virtual-link; Default: broadcast)the OSPF network type on this interface. Note that if interface configuration does not exist, the default network type is 'point-to-point' on PtP interfaces, and 'broadcast' on all other interfaces.
  • broadcast - network type suitable for Ethernet and other multicast capable link layers. Elects designated router
  • nbma - Non-Broadcast Multiple Access. Protocol packets are sent to each neighbors unicast address. Requires manual configuration of neighbors. Elects designated router
  • ptp - suitable for networks that consists only of two nodes. Does not elect designated router
  • ptmp - Point-to-Multipoint. Easier to configure than NBMA because it requires no manual configuration of neighbor. Does not elect designated router. This is the most robust network type and as such suitable for wireless networks, if 'broadcast' mode does not works good enough for them
  • ptp-unnumbered - works the same as ptp, except that remote neighbour does not have associated IP address to a specific PTP interface. For example, in case if IP unnumbered is used on Cisco devices.
  • virtual-link - for virtual link setups.
vlink-neighbor-id (IP)Specifies the router-id of the neighbour which should be connected over the virtual link.
vlink-transit-area (name)A non-backbone area the two routers have in common over which the virtual link will be established. Virtual links can not be established through stub areas.