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Chapter 12

Answers, Config Museum: Fallback Static Route

Answers, Config Museum: Fallback Static Route

🕔09:05, 19.Dec 2014

Fallback static routes get little attention for #CCNA. Today’s post lets you check your answers versus that brief config museum lab that asked you to figure out what routes to add if we simply disabled OSPF on router R3. Today’s

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Config VM: Fallback Static Routes

Config VM: Fallback Static Routes

🕔09:10, 15.Dec 2014

Fallback static routes play a key role in several types of configurations used in Cisco routers. For #CCNA, fallback static routes is one of those corner topics that don’t get a lot of attention. Today’s Config Museum post gives you

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Answers, Config VM: Static Routes

Answers, Config VM: Static Routes

🕔09:05, 5.Dec 2014

Today’s post gives the configuration solution to the static route config museum exercise posted back in this earlier post. Nothing fancy – just the answer, a few comments, and a place to ask questions if you have them. As always,

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Config VM: Static Routes

Config VM: Static Routes

🕔09:05, 1.Dec 2014

This next config museum post starts asks you to configure some IPv4 static routes. The network begins with the interfaces up, and with the IPv4 addresses configured. Your job is to configure static IPv4 routes from each router to the

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Answer: Overlapping Connected and Routing Protocol Routes

Answer: Overlapping Connected and Routing Protocol Routes

🕔09:05, 25.Apr 2014

This post wraps up the #CCNA Q&A focused on how routers add routes to their routing tables. What happens when a router happens to learn three separate routes for the same subnet ID – but with different masks? And how

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Question: Overlapping Connected and Routing Protocol Routes

Question: Overlapping Connected and Routing Protocol Routes

🕔09:05, 22.Apr 2014

This latest #CCNA question takes us in the same direction as the previous question: how does a router choose between different competing routes? Today’s question adds connected routes to the mix, along with routes learn by routing protocols.  Enjoy! Previous

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Answers to Tshoot Drill: OSPF Hello Timer Changed

Answers to Tshoot Drill: OSPF Hello Timer Changed

🕔09:57, 10.Feb 2014

The previous post changed the OSPF Hello interval (timer) on a WAN serial link. What’s that do to the output of various OSPF commands in our familiar router triangle? What happens to show ip ospf neighbor? Show ip ospf interface

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#CCNA Tshoot Drill: OSPF Hello Timer Changed

#CCNA Tshoot Drill: OSPF Hello Timer Changed

🕔10:45, 27.Jan 2014

For this final variation of a #CCNA Simlet question in this series, consider what happens when one OSPF neighbor changes its OSPF Hello interval. Based on what you expect to change, what show command output should change? Prep for those

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Answers to Tshoot Drill – WAN Interface Down

Answers to Tshoot Drill – WAN Interface Down

🕔09:05, 22.Jan 2014

The #CCNA scenario begins with a working router triangle, using a single OSPF area. Then you shutdown a serial link. What changes with OSPF show command output? Show ip ospf neighbor? Show ip ospf interface brief? Show ip route? And

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#CCNA Tshoot Drill: OSPF WAN Interface Down

#CCNA Tshoot Drill: OSPF WAN Interface Down

🕔09:05, 10.Jan 2014

OSPF fails – a little – on a #CCNA Sim question. What show command symptoms would you expect to see if the misconfiguration was that a WAN interface between two routers was shutdown? What if redundancy exists over some other

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