Configures various parameters, including authentication, area identification, virtual link ID, and delay/interval values for the specified OSPF area using a specific VRF instance.

no

Disables or removes configured parameters for the specified OSPF area using a specific VRF instance.

ip_address

Specifies the IP address of the area where authentication will be enabled in IPv4 dotted-decimal notation.

decimal_value

Specifies the identification number of the area where parameters to be configured as an integer from 0 through 4294967295.

authentication

Sets the OSPF authentication type to use the simple authentication method.

message-digest

Sets the OSPF authentication type to use the message digest 5 (MD5) authentication method.

default-cost cost_value

Sets the default cost for an OSPF area. cost_value must be an integer from 0 through 16777215.

nssa [default-information-originate] [no-redistribution no-summary] [translate-always] [translate-candidate] [translate-never]

Configures and defines an area as an NSSA (Not So Stubby Area) and configures OSPF parameters for it.

default-information-originate : Configures the OSPF VRF instances to originate default information to the NSSA area.

no-redistribution : Configures the OSPF VRF instance to not to redistribute external routes to the NSSA area.

no-summary : Configures the OSPF VRF instance to not to inject the inter-area routes into NSSA.

translate-always : Configures the NSSA-ABR (Area Border Router) always to translate. By default this is disabled.

translate-candidate : Configures the NSSA-ABR always to translate election. By default this is enabled.

translate-never : Configures the NSSA-ABR never to translate. By default this is disabled.

stub [no-summary]

Specifies an OSPF area as an stub area configures the NSSA-ABR never to translate. By default this is disabled.

no-summary : Disables (stops) the ABR from sending summary LSAs into the stub area.

virtual-link router_id

Specifies the router identifier which provides a virtual link between an area that cannot be physically connected to the network backbone and an area that is physically connected to the network backbone.

router_id must be an IP address in IPv4 dotted-decimal notation of the ABR to be linked to.

authentication {message-digest | null | text}

Configures the OSPF authentication method to be used by the virtual link between an area that cannot be physically connected to the network backbone and an area that is physically connected to the network backbone.

message-digest: Set the OSPF authentication type to use the message digest (MD) authentication method.

null: Set the OSPF authentication type to use no authentication, thus disabling either MD or clear text methods.

text: Set the OSPF authentication type to use the clear text authentication method.

authentication-key

Configures the authentication password for the virtual link between an area that cannot be physically connected to the network backbone and an area that is physically connected to the network backbone.

message-digest-key key_id

Specifies the MD key identifier number for virtual link connection. key_id must be an integer from 1 through 255.

md5

Sets the message digest to MD5 for virtual link connection.

[encrypted] password passwd_string

Specifies the password required for virtual link connection authentications. The keyword password is optional and if specified passwd_string must be an alphanumeric string of 1 through 63 characters. The password specified must be in an encrypted format if the optional keyword encrypted was specified.

The encrypted keyword is intended only for use by the system while saving configuration scripts. The system displays the encrypted keyword in the configuration file as a flag that the variable following the password keyword is the encrypted version of the plain text password. Only the encrypted password is saved as part of the configuration file. encrypted_string is an alphanumeric string of 1 through 523 characters.

dead-interval value

Specifies the dead interval (in seconds) that the router should wait, during which time no packets are received and after the router considers a neighboring router to be off-line. value must be an integer from 1 through 65535.

hello-interval value

Specifies the hello interval (in seconds) before sending a hello packet. value must be an integer from 1 through 65535.

retransmit-interval value

Specifies the delay between retransmission (in seconds) that router should wait before retransmitting a packet. value must be an integer from 1 through 3600.

transmit-delay value

Specifies the interval (in seconds) that the router should wait before transmitting a packet. value must be an integer from 1 through 3600.

Creates a default external route into an OSPF routing domain.

no

Disables the default external route.

always

Always advertise the route regardless of whether or not the software has a default route.

metric metric_value

Sets the OSPF metric used in creating the default rout as an integer from 1 through 16777214.

metric-type { 1 | 2 }

Sets the default route metric type.

1: Sets the OSPF external link type for default routes to Type 1.

2: Sets the OSPF external link type for default routes to Type 2.

route-map route_map_name

Specifies the name of the default route-map to be use as an alphanumeric string of 1 through 79 characters.

Configures the default metric value for the OSPF routing protocol.

metric_value

Sets the metric value expressed as an integer from 1 through 16777214. The default metric value setting is 26385.

no

Enables or disables the default metric value for OSPF.

Configures the OSPF route administrative distances for all OSPF route types or based on specific route type. Administrative distance is the measure used by Cisco routers to select the best path when there are two or more different routes to the same destination from two different routing protocols. Administrative distance defines the reliability of a routing protocol. Each routing protocol is prioritized in order of most to least reliable (believable) using an administrative distance value. A lower numerical value is preferred.

no

Disables the soecified option.

distance_value

Specifies the OSPF route administrative distances as an integer from 1 to 255. The default distance value is 110.

external ext_distance_value

Sets the OSPF route administrative distance for routes from other routing domains, learned by redistribution. ext_distance_value must be an integer from 1 through 255. The default is 110.

inter-area inter_distance_value

Sets the OSPF route administrative distance for routes from one routing area to another. inter_distance_value must be an integer from 1 through 255. The default is 110.

intra-area intra_distance_value

Sets the OSPF route administrative distance for all routes within an area. intra_distance_value must be an integer from 1 through 255. The default is 110.

Enables or disables the filtering of networks in outgoing routing updates.

no

Disables the filtering of networks in outgoing routing updates.

route_access_list

Specifies the name of the OSPF route access list to use for filtering as an alphanumeric string of 1 through 63 characters.

connected

Filters connected routes.

rip

Filters RIP routes. (RIP is not supported at this time.)

static

Filters static routes.

Executes all show commands while in Configuration mode.

Exits the current configuration mode and returns to the Exec mode.

Exits the current mode and returns to the parent configuration mode.

Configures OSPF routers that interconnect to non-broadcast networks.

no

Disables OSPF routers that interconnect to non-broadcast networks.

ip_address

Specifies the interface IP address of the OSPF neighbor expressed using IPv4 dotted-decimal notation.

poll-interval poll_interval_value

Default: 120

Sets the number of seconds in the dead neighbor polling interval as an integer from 1 through 65535

priority priority_value

Default: 0

Sets the 8-bit number that represents the router priority value of the non-broadcast neighbor associated with the specified IP address. This must be an integer from 0 through 255. This keyword does not apply to point-to-multipoint interfaces.

Enables OSPF on an interface and defines the OSPF area for that network.

no

Disables OSPF on an interface and defines the OSPF area for that network.

network_ip_address / mask

Specifies the network address and mask as well as the interface on which OSPF will be enabled. network_ip_address in entered in IPv4 dotted-decimal notation, followed by the "/" and the mask in CIDR notation.

area_id

Specifies the OSPF area identification number for the specified network as an integer from 0 through 4294967295.

area_ip_address

Specifies the IP address of the OSPF area for this network. This must be entered in IPv4 dotted-decimal notation.

Configures the router ID for the OSPF process.

no

Disables the specified OSPF router.

ip_address

Specifies the router ID for the OSPF process as an IP address entered using IPv4 dotted-decimal notation

Enables or disables the suppression of OSPF routing updates on the specified interface.

no

Disables the name assigned to a logical interface within the specific context.

interface_name

Specifies the name assigned to a logical interface within the context as an alphanumeric string of 1 through 79 characters.

Redistributes routes from other protocols to OSPF neighbors using the OSPF protocol.

no

Disables the redistributed routes.

connected

Redistributes connected routes.

rip

Specifies that RIP routes will be redistributed. (RIP is not supported at this time.)

static

Redistributes static routes.

metric metric_value

Sets the OSPF metric used in the redistributed route. This must be an integer from 1 through 16777214.

metric-type { 1 | 2 }

Default: 2

Sets route metric type that is applied to redistributed routes.

1: Sets the OSPF external link type for routes to Type 1.

2: Sets the OSPF external link type for routes to Type 2.

route-map route_map_name

Filter routes through the specified route map before redistribution. route_map_name specifies the name of the route-map to use as an alphanumeric string of 1 through 79 characters.

Adjusts settings for the OSPF refresh timer.

no

Disables the refresh timer.

value

Default: 10

Specifies the minimum amount of time (in seconds) to wait before refreshing a Link-state Advertisement (LSA). This must be an integer from 10 through 1800.

Configures the router ID for the OSPF process.

no

Disables the router ID for the OSPF process.

Specifies the router ID for the OSPF process in IPv4 dotted-decimal notation.

Sets the Shortest Path First (SPF) timers.

no

Disables SPF timers.

delay_value

Default: 5

Specifies the delay time (in seconds) between receiving changes to an SPF calculation. This must be an integer from 0 through 4294967295.

hold_time_value

Default: 10

Specifies the hold time (in seconds) between consecutive SPF calculations. This must be an integer from 0 through 4294967295.