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CCNA2

Chapter 7 & 8

Question/TermAnswer/Definition
Primary Uses of Static Routing Ease of routing table maintenance in smaller networks Routing to and from a stub network Accessing a single default
Disadvantages of Static Routing Not easy to implement in a large network Managing the static configs can become time consuming If a link fails, cannot reroute traffic
Advantages of Dynamic Routing Suitable in all topologies where multiple routers are required Generally independent of the network size Automatically adapts topology to reroute traffic if possible
Disadvantages of Dynamic Routing Can be more complex to implement Less secure. Additional config settings required to secure. Route depends on the current topology Requires additional CPU, RAM, and link bandwidth
Data Structures Routing protocols typically use tables or databases for its operations. Info kept in RAM.
Routing Protocol Messages Routing protocols use various types of messages to discover
OSPFv2/3 Supports Link-State? Yes
OSPFv2/3 Routing Algorithm SPF
OSPFv2/3 Metric? Cost
OSPFv2/3 Areas? Support the same two-level hierarchy
OSPFv2/3 Packet Types? Same Hello, DBD, LSR, LSU, and LSAck packets
OSPFv2/3 Neighbor Discovery? Transitions through same states using hello packets.
OSPFv2/3 DR & BDR? Function and election process is the same
Router ID 32-bit router ID: determined by the same process in both protocols
IPv4 is for OSPFv? 2
IPv6 is for OSPFv? 3
How often are OSPF Hello packets sent by default? 10 seconds on multi access and point-to-point segments. Every 30 seconds on NBMA.
The Dead Interval? 4 x as long as the Hello interval.
What is needed for routers to become adjacent? Their Hello & Dead intervals, network types and subnets much match.
Created by: TheSilentDoctor
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