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Manipulating route updates
Fichas del conjunto (30)
- 1what is the default AD of External BGP?20
- 2what is the default AD of a static route?1
- 3what is the default AD of EIGRP summary route5
- 4what is the default AD of OSPF110
- 5what is the default AD of RIP120
- 6what is the default AD external EIGRP170
- 7what is the default AD Internal BGP200
- 8what is the default AD of an unknown route255 (unreachable)
- 9Where is route redistribution performed?OUTBOUND, not inbound from a router, the router sends OUT a redistribution INTO another router, doesn't change it's own routing table
- 10what is a seed metric?helps translate between 2 routing protocols that use different metrics for determining best path
- 11routes redistributed into EIGRP and RIP are assigned a metric of what?infinity and must be given a seed metric or else routes won't get redistributed
- 12routes redistributed into OSPF are assigned a type 2 metric of what?20
- 13routes redistributed into BGP are assigned a type 2 metric of what?1
- 14where is the redistribute command configured?under the routing process that is set to receive the redistributed routes
- 15default administrative distance of EIGRP routes learned within an AS?90
- 16What is E1Type O E1 external route calculate cost by adding external cost to interal cost of each link packet crosses. (for use when multiple ASBRs advertise external route)
- 17What is E2?default. External cost of O E2 routes is fixed and does not change across OSPF domain. Use if only 1 ASBR is advertising external route.
- 18What is one-way redistribution?One route is redistributed from one area into another in one direction
(one point redistribution) - 19what is two-way redistribution?routes are redistrubted by two routing processes in both directions
(one point redistribution) - 20What is multipoint one-way redistribution?Like one point redistribution, but routes are redistributed and multiple points into an area, but only in 1 direction
- 21what is Multipoint two-way redistribution?Also referred to as mutual redistribution, this method consists of two or more boundary routers redistributing routes in both directions.
- 22what are 2 possible issues with 2 way multipoint route redistribution?Suboptimal routing. (Only part of the total cost is considered in routing decisions.)
• Self-sustained routing loops upon route loss - 23what is the safest way to redistribute routes?in 1 direction, but can create single point of failure.
- 24What are 3 route filtering methodsDistribute lists
Prefix lists
Route Maps - 25what is a Distribute listallows an access control lists (ACLs) to be applied
to routing updates - 26what is a Prefix listan alternative to ACLs designed to filter routes. It can be
used with distribute lists, route maps, and other commands. - 27what is a Route mapcomplex access lists that allow conditions to be tested
against a packet or route, and then actions taken to modify attributes of the packet
or route. - 28how do route maps differ from ACLS?they can use SET commands to modify the packet or route
- 29what are three common uses of route maps?Route filtering during redistribution
Policy-based routing (PBR)
implementing BGP policy - 30—
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- Fichas sobre Manipulating route updates, creado por Dustin Sanders el 17/06/2017.
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- Dustin Sanders
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