CCDA Chapter 6
Terms
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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 - What are stub networks?
- -only one port is in and out
- What are distance vector characteristics?
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-slow convergence
-good scalabilty
-limited scalalbilty (ex. RIP) - Link state protocol characterisitics
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-fast convergence
-good scalabilty
-less routing traffic overhead
-more knowledge needed for implementation and maintanence - 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 - Link State
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-uses Hello, i am here (routers)
-doesnt send out updates unless it goes down then sends out multicast - IGP- interior gateway protocols
- -routing inside autonomous systems
- EGP- exterior gateway protocols
- -between autonomous protocols
- 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 - Examples of EGP
- BGP
- Examples of IGP
- -RIP, OSPF, RIPv2, OSPF, IS-IS, EIGRP
- Flat routing protocol
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-classful routing
-RIPv1 and v2, IGRP - Heirarchial routing protocol
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-classeless
-ex. OSPF, IS-IS - EIGRP is it heirarchial or flat?
- both??
- 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 - Which RIP version supports VSLM?
- -rip v 2
- What is the max # of hops in rip v 2?
- 15
- EIGRP
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-enhanced interior gateway routing protcol
-uses same metric * 256
-advanced distance vector
-some link state protocols - 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 - 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 - Name 5 different routing protcols
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-OSPF
-IS-IS
-IGRP
-EIGRP
-RIP v 2 - BGP= border gateway protoccol
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-internet routing
-distance vector
-between asynchronous systems - 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 - What type of connectivity does PSTN use?
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AAA static routing
snapshot routing - What type of connectivity does the internet use?
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static routing
BGP - What is redistribution ? used in Routing protocols?
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-enables protocol coexistence in a single network
-routes between sites