Definitions

1. External routes are routes for which the best path is learned from a neighbor external to the autonomous system.
2. External routes are defined as routes which were distributed in OSPF from another routing protocol.
3. External routes are generated from ASBRs that connect the domain to other sources of routing information, including manually generated static routes.
4. External routes were imported from SURAnet by one of the Proteon routers.
5. External routes are flooded throughout all OSPF areas.

Type

1. OSPF chooses intra-area routes over inter-area routes, inter-area routes over Type 1 External routes, and so on.

Addition

1. In addition, external routes (AS external advertisements) are included in all non-stub area databases (see Section 3.6).

Internal

1. EIGRP supports internal and external routes. (Web site)

Redistribution

1. External route summarization is specific to external routes that are injected into OSPF via redistribution. (Web site)

Redistributing

1. As the above diagram shows, RTA is redistributing two external routes into OSPF. N1 and N2 both have an external cost of x. (Web site)

Enhanced Igrp

1. In addition, Enhanced IGRP treats IGRP routes as external routes and provides a way for the network administrator to customize them. (Web site)
2. Enhanced IGRP supports internal and external routes. (Web site)

Igrp

1. IGRP cannot differentiate between internal and external routes. (Web site)

Autonomous System

1. OSPF allows for the transfer and tagging of external routes injected into an Autonomous System.
2. Type 2 External routes are learned from outside the autonomous system and have non-OSPF-like metrics. (Web site)

Advertising Router

1. Whenever this address is 0.0.0.0 it indicates that the external routes are reachable via the advertising router, in this case 203. (Web site)

Information

1. Information about these qualities might be determined by means other than BGP. 3. Preference of internal routes over external routes. (Web site)

Originating Router

1. The router ID is used to identify the originating router for external routes. (Web site)

Section 14

1. They mark all external routes that they import into the OSPF domain as to whether they provide multicast connectivity (see Section 14.9).

Route

1. External routes also include the originating router, the originating autonomous system, the external metric and the source of this route.
2. A route server acquires external routes from RS clients that are also border routers.

Router

1. Such a router has AS external routes that are advertised throughout the Autonomous System. (Web site)
2. Border Router (BR) - a router that acquires external routes, i.e. (Web site)

Routers

1. The NSSA (0.0.0.1) consists of two routers: R1 and R2. An NSSA allows external routes to be flooded within its area. (Web site)

Routes

1. In the example above, all of the routes that this router learns through EIGRP process number 11 will be propagated into OSPF as Type 2 external routes. (Web site)
2. OSPF always prefers Type 1 to Type 2 External routes because Type 1 routes do include the internal path cost in the metric. (Web site)
3. The PE OSPF router becomes the originator of the routes, which are either type 5 external routes or type 3 internal routes. (Web site)

Default Route

1. Nonstub areas —Nonstub areas carry a default route, static routes, intra-area routes, interarea routes, and external routes.
2. Stub areas To reduce the cost of routing, OSPF supports stub areas, in which a default route summarizes all external routes. (Web site)

Stub Area

1. If routing from a stub area to external routes (i.e., non-OSPF routes) is needed, a default route must be set. (Web site)
2. A stub area is an area which does not receive external routes except the default route, but does receive inter-area routes. (Web site)
3. NSSA is an extension of the stub area feature that allows the injection of external routes in a limited fashion into the stub area.

Boundary Routers

1. Routing table entries for AS boundary routers are used when calculating the AS external routes (see Section 16.4).

Boundary Router

1. Any router having these external routes is called an AS boundary router. (Web site)

Eigrp

1. The redistributed routes are tagged as EIGRP external routes. (Web site)
2. IGRP and EIGRP can be used to advertise external routes. (Web site)
3. In addition, EIGRP treats IGRP routes as external routes and provides a way for the network administrator to customize them.

Area Border Routers

1. Area Border Routers (ABRs) that connect stub areas do not flood any external routes they receive into the stub areas.

Ospf

1. Redistributing routes into OSPF from other routing protocols or from static will cause these routes to become OSPF external routes. (Web site)
2. Redistribution of these routes makes them OSPF external routes.
3. OSPF external routes, or EIGRP external routes. (Web site)

Nssa

1. Type 7: NSSA AS external routes flooded by the ASBR. The ABR converts these into Type 5 LSAs before flooding them into the Backbone.
2. NSSA allows importing of Type 7 AS external routes within NSSA area by redistribution. (Web site)
3. By declaring the totally stubby area as NSSA, no external routes from the backbone, except the default route, enter the area being discussed. (Web site)

Asbrs

1. Advertises both its intra-area routes, and external routes from ASBRs connected to it, to the backbone.
2. ASBRs perform calculations related to external routes.

External Routes

1. OSPF can learn routes from RIP, incorporate them in the routing table, assign them an external metric, and tag them as external routes. (Web site)
2. In this case, the area border router does not need to advertise external routes to the other routers within the stub area. (Web site)
3. In OSPF, a type of stub area in which external routes can be flooded.

Categories

1. Ospf Domain
2. Information Technology > Computers > Internet > Default Route
3. Asbrs
4. Static Routes
5. Area Border Router
6. Books about "External Routes" in Amazon.com
   

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