network cisco ccna gns3 certification arteq

network cisco ccna gns3 certification arteq
a network runs through it

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Sunday, August 12, 2012

and now a word from asbr...

this kinda shit drives me nuts... make up my mind...

according to;

An area is interface specific. A router that has all of its interfaces within the same area is called an internal router (IR). A router that has interfaces in multiple areas is called an area border router (ABR). Routers that act as gateways (redistribution)between OSPF and other routing protocols (IGRP, EIGRP, IS-IS, RIP, BGP, Static) or other instances of the OSPF routing process are called autonomous system boundary router (ASBR). Any router can be an ABR or an ASBR.

according to wendell, route ocg:

ASBR Autonomous System Border Router. A router using OSPF in which the router learns routes via another source, typically another routing protocol, exchanging routes that are external to OSPF with the OSPF domain

according to doyle, routing tcpip vol 1

Autonomous System Boundary Routers (ASBRs) are gateways for external traffic,  injecting routes into the OSPF domain that were learned (redistributed) from some other protocol, 

according to wiki:

Autonomous system boundary router

An autonomous system boundary router (ASBR) is a router that is connected to more than one Routing protocol and that exchanges routing information with routers in other protocols. ASBRs typically also run an exterior routing protocol (e.g., BGP), or use static routes, or both. An ASBR is used to distribute routes received from other, external ASs throughout its own autonomous system. (An interactive ASBR simulation shows how an ASBR creates External LSA for external addresses and floods them to all areas via ABR.) Routers in other areas use ABR as next hop to access external addresses. Then ABR forwards packets to the ASBR that announces the external addresses.

then there's chris bryant...

Cisco CCNP ROUTE Exam Tutorial OSPF ASBR Route Redistribution

Cisco CCNP ROUTE certification tutorial on the OSPF Autonomous System Border Rotuer (ASBR). Route distribution between OSPF and RIP shown on a Cisco ...

choose your poison...

or let she hulk figure it out...

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