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Flashcards

IP Routing

jeriel.juarbe2031 Enterprise Networking college Inglês 70 flashcards

Flashcards do conjunto (70)

  1. 1What is IP Routing?is the process by which a packet is forwarded from one network to another.
  2. 2What are the 2 ways a routing table can be created?manually=Static routes
    &
    dynamically=dynamic routes, using routing protocols
  3. 3What are the 4 components of a routing statement?IP route 191... 255... 200.100.50...
    1) command
    2) destination Network
    3) Network mask of dest. network
    4) next hop IP Address or outbound interface.
  4. 4What is the outbound interface used for in a routing statement?Only used on serial interfaces
    (ipunumbered)
  5. 5This is the ability to take a group of sub-networks and summarize them, as one routing statement entry.Routing summarization
  6. 6What are the steps to determine the summary route for route summarization?1) write out the lowest and highest address in binary format
    2) Examine the bits to determine what bits are the same to determine the CIDR to be used (subnetmask)
    reference page 36 in SG
  7. 7This term is the ability to take a summarized route and determine what networks a summary covers.REVERSE route summarization
  8. 8What are the steps performed in reverse route summarization1) determine the block size based on the CIDR (to determine the next network)
    2) increment -1 then change the CIDR to default CIDR
  9. 9What is the longest match rule?a router will use the most specific route to a destination. the route most bits in the submask takes precedence
  10. 10This is used to send packets with a remote destination network that is not located in the routing table to the next-hop router.Default Routing
  11. 11T or F: Default route is AKA gateway of last resort. Essentially a summarized route covering all possible networks.True
    ip route 0.0.0.0 0.0.0.0 210.1.1.1
    or
    ip route 0.0.0.0 0.0.0.0 S0
  12. 12These build routing tables from info received from other routers in the Internetwork.Dynamic Routing Protocols
  13. 13A group of networks under mutual network administration and sharing the same routing methodology is called....?Autonomous System (AS)
  14. 14T or F: Examples of AS's are: RIP EIGRP OSPFTrue
  15. 15T or F: AS's can be subdivided into areas that must be assigned a unique AS Number (ASN) so that all routers in the area use the same number to share routing table info.True
  16. 16What are the 2 main tyos of dynamic routing protocols?1) Distance-Vector
    or
    2) Link-State
  17. 17What were the first routing protocols produced that utilize a hop count?Distance-Vector routing protocols
  18. 18Distance-Vector routing protocols are advertised as vectors of distance and direction. Hop count limited to 15. update neighbors with its routing table in periodic basis.Info about Distance- Vector Protocols
  19. 19The following protocols are a part of what main type of dynamic routing protocol? -RIP -IGRP -IPX RIP -RTMPDistance-Vector Routing Protocols
  20. 20This Main type of routing protocol sends router info to its formed neighbor relationships and updates them on a needed basis.Linked-State
  21. 21T or F: Link-state protocols are sometimes called shortest path first or distributed database protocols.True
  22. 22The following are examples of what main type of dynamic routing protocols? -OSPF -IS-IS -NLSPLink-state Routing Protocols
  23. 23T or F: Administrative Distances (AD) are used to determine the most preferred route because of the possibility that 2 different routing protocols have a route to a destination.True
  24. 24Match the AD with the IP route: 0connected interface
  25. 25Match the AD with the IP route: 1static route using an IP address
  26. 26Match the AD with the IP route: 20External BGP route
  27. 27Match the AD with the IP route: 90Internal EIGRP route
  28. 28Match the AD with the IP route: 110OSPF route
  29. 29Match the AD with the IP route: 120RIP Route
  30. 30This Routing Protocol -designed for small networks -usually UNIX environments -uses hop count as a metricRouting information protocol RIPv2
  31. 31These stats are for what protocol? TIP: 224.0.0.0 S/T port: UDP: 520 update: 30 sec hops: 15 max authentication: yes class: less routingRIPv2
  32. 32What are the 4 RIP timers and their values?Route Update: 30 seconds
    Route invalid: 180 seconds
    Holddown Timer: 180 seconds
    Route Flush Timer: 240 Seconds
  33. 33RIP algorithms to prevent routing loops. What are the 3 Loop avoidance methods?Triggered Updates=A->B "hey my shit is int is down"
    Split Horizon= A->B then B->C
    Route Poisoning =A->B, B "roger but i can't get to A"
  34. 34what are the commands entered in the hyperterminal to designate a dynamic routing protocol?(config)#router rip
    (config-router)# version 2
    (config-router)# network x.x.x.x
  35. 35This is a version of the RIP dynamic routing protocol designed specifically for IPV6 networks.RIPng
    next generation bitches!
  36. 36T or F: RIPng names each process on the router and you can multiple processes on a single router.True
  37. 37RIPng sends updates to the IPV6 multicast group via which IPV6 address, port and protocol?FF02::9 using UDP:521
  38. 38This classless routing protocol is a link-state routing protocol that permits the use of VLSM, equal-cost load balancing.OSPF
    Open Shortest Path First
  39. 39In OSPF when do routers become NEIGHBORS?after hello packets are seen assuring 2 way comms
  40. 40True or False: Every router on the network will form adjacency with the Designated Router and the Backup Designated router.True
  41. 41What is a link-state advertisement?database which contains routing and link-state summary info which the router uses to populate the routing table.
  42. 42For OSPF, priority is 0-255 the higher the more important.True
  43. 43Which Router is described below: -each area has one HMFIC -responsible for LSA type 2 to the rest of the internetwork. -all routers send their LSA's to this router -uses multicast 244.0.0.5 to send updates -recieves multicast 224.0.0.6The (DR) Designated Router
  44. 44Which Router is described below: -takes functionality of the DR if the DR failsBackup Designated Router
    (BDR)
  45. 45T or F: A router can be a DR for one segment, a BDR for another segment, and have interfaces belonging to other segments with no such designation.True
  46. 46OSPF router types: routers with atleast one interface attached to area 0backbone router
  47. 47OSPF router types: routers whose interfaces all belong to the same OSPF area. these routers only maintain one LSDB.Internal Router
  48. 48OSPF router types: routers connected to more than one area. these routers maintain LSDB for each area they belong to.Area Border Router (ABR)
  49. 49OSPF router types: routers that inject external LSAs into the OSPF database. these external routes are learned either via other routing protocols or as static routes.Autonomous System Boundary Router (ASBR)
  50. 50T or F: A router can be an ABR, ASBR, and a backbone router at the same time.True
  51. 51link-state advertisements (LSA) Types: produced by every router and includes router's links, interfaces, state of links, and costType 1 LSA
    Router LSA
  52. 52link-state advertisements (LSA) Types: produced by every designated router (DR) on every transit broadcast or non-broadcast multi-cast network. it lists all attached routers in the multi-access network.Type 2 LSA
    Network LSA
  53. 53link-state advertisements (LSA) Types: sent by the ABR into an area to advertise OSPF destinations outside the area (but in the same OSPF AS)TYPE 3 LSA
    Summary LSA
  54. 54link-state advertisements (LSA) Types: sent by the ASBR to advertise networks external to the OSPF AS. flooded throughout the OSPF AS (as a type 4)TYPE 5 LSA
    AS External LSA
  55. 55link-state advertisements (LSA) Types: sent by the ABR into an area to advertise ASBRsType 4 LSA
    Summary LSA for ASBRs
  56. 56link-state advertisements (LSA) Types: Originated by ASBRs in a not-so-stubby area. It is not flooded through out the OSPF AS, only to the NSSAType 7 LSA
    NSSA External LSA
  57. 57True or False Area 0 is reserved for the backbone area. Which is responsible for distributing routing info between areas.True
    0 is at the top of the OSPF Hierarchy
  58. 58OSPF Area Types: able to propagate and receive all LSA and routes. Area 0 is an example.Standard Area
  59. 59OSPF Area Types: An area which does not receive route advertisements external to the OSPF AS. in a stub area, ABR deletes Type 4 and Type 5 LSAs and turn itself into defaultSTUB Area
  60. 60OSPF Area Types: A type of stub area that can import AS external routes and send them to other areas, but still cannot receive AS external routes from other areaNot So Stubby Area
    (NSSA)
  61. 61OSPF Area Types: Similar to stub area. this area does not allow summary or external route advertisements.Totally Stubby Area
  62. 62is there a type 5 LSA? yesit's not a stub area
  63. 63Commands for OSPF: router ospf 100 network x.x.x.x area 0 network x.x.x.x area 2yup
  64. 64- exterior gateway protocol used to connect different AS. -TCP as its transport -ipv4 and ipv6 -IANA assigned number (ASNs) 16 bit or 32 bitBorder Gateway Protocol
    BGP
  65. 65-interior gateway protocol is referred to as a hybrid (best of both worlds -it can load balance over unequal cost links -updates as needed basis -supports ipv4 & ipv6 using Protocol Dependent Modules (PDMs)Enhanced Gateway Routing Protocol
    EIGRP
  66. 66This EIGRP table keeps a record of directly connected routers.Neighbor Table
  67. 67This EIGRP Table stores routes learned from neighbor routing tables and only routes learned via EIGRP.Topology Table
  68. 68T or F: EIGRP is a classless protocol that permits VLSM.True
    extra info
    -max hop is 255
    -uses (DUAL) Diffusing Update Algorithm
  69. 69What process allows one routing protocol to advertise networks learned by another routing protocol?Route Redistribution
  70. 70Route Redistribution uses default administrative distances when dealing with routing protocols with differences in metrics.True

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college Enterprise Networking (IP Routing) FlashCards sobre IP Routing, criado por jeriel.juarbe2031 em 10-09-2014.
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