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27 Cards in this Set
- Front
- Back
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What are static routes used in?
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-Stub networks
-smaller, non expanding networks -features such as DDR- dial on demand routing |
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What are stub networks?
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-only one port is in and out
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What are distance vector characteristics?
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-slow convergence
-good scalabilty -limited scalalbilty (ex. RIP) |
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Link state protocol characterisitics
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-fast convergence
-good scalabilty -less routing traffic overhead -more knowledge needed for implementation and maintanence |
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Name some characterisitics of distance vector routing
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-routing updates are periodic (30 sec)
-sends whole routing tables -no triggered updates -uses hop counts |
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Link State
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-uses Hello, i am here (routers)
-doesnt send out updates unless it goes down then sends out multicast |
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IGP- interior gateway protocols
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-routing inside autonomous systems
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EGP- exterior gateway protocols
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-between autonomous protocols
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What are the metrics for RIP, IGRP, EIGRP, OSPF, BGP
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RIP- hop count
EIGRP- min bandwidth, cumm delay OSPF- cumm cost IGRP- min bandwidh, cumm delay BGP- AS-path |
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Examples of EGP
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BGP
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Examples of IGP
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-RIP, OSPF, RIPv2, OSPF, IS-IS, EIGRP
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Flat routing protocol
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-classful routing
-RIPv1 and v2, IGRP |
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Heirarchial routing protocol
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-classeless
-ex. OSPF, IS-IS |
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EIGRP is it heirarchial or flat?
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both??
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On-demand routing
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-reduces dynamic routing traffic overhead
-ideal for hub and spoke -hubs dynamically maintain routes to stub spokes- no IP routing on stub spokes -uses CDP- cisco discovery protocol |
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Which RIP version supports VSLM?
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-rip v 2
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What is the max # of hops in rip v 2?
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15
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EIGRP
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-enhanced interior gateway routing protcol
-uses same metric * 256 -advanced distance vector -some link state protocols |
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OSPF
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-open shortest path first
-large, scalable networks where RIP failed -good scalabilty -mulitple area design -subnet mask in updates -no periodic updates |
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OSPF
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-open shortest path first
-large, scalable networks where RIP failed -good scalabilty -mulitple area design -subnet mask in updates -no periodic updates |
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Integrate IS-IS
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-based on open system interconnection (OSI) IS-IS
-link state protocol -support for IP, OSI routing protocols -used for Level 2 routers for interconnecting areas -Level 1 routers for internal to areas -difficult to implement -there is no area 0 |
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Name 5 different routing protcols
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-OSPF
-IS-IS -IGRP -EIGRP -RIP v 2 |
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BGP= border gateway protoccol
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-internet routing
-distance vector -between asynchronous systems |
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what routing protocols can you find in the access, distribution, and core areas?
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-access- OSPF, EIGRP, IS-IS
-distribution- selected access protocol -core- RIPv2, OSPF, EIGRP, ODR, Static |
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What type of connectivity does PSTN use?
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AAA static routing
snapshot routing |
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What type of connectivity does the internet use?
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static routing
BGP |
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What is redistribution ? used in Routing protocols?
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-enables protocol coexistence in a single network
-routes between sites |
