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Tag "OSPF"

OSPF Network Config 1

OSPF Network Config 1

🕔09:05, 21.Sep 2015

The OSPF network command can cause a bit of mental trouble for anyone just starting out. The reason: the first two parameters require us to do a little math, compare that result to the router’s interface IP addresses to then

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OSPF Interface Config – Answers (Config Museum)

OSPF Interface Config – Answers (Config Museum)

🕔09:05, 12.Dec 2014

Today’s post shows the config for this latest Config Museum practice problem, with some commentary about how to configure OSPF per-interface. It helps to start with the problem statement, found in the previous Config museum post from a few days

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OSPFv2 Interface Configuration (Config Museum)

OSPFv2 Interface Configuration (Config Museum)

🕔09:15, 9.Dec 2014

The OSPF network command has confused Cisco newbies for decades. Today’s post looks at a more straightforward way to configure OSPF with a simple command to enable OSPF on each interface.  To do so, we’ll do another Config Museum: a

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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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Question: Choosing the Best Route, Same Subnet ID, Different Mask

Question: Choosing the Best Route, Same Subnet ID, Different Mask

🕔09:05, 15.Apr 2014

#CCNA study scenarios often focus on the most common and most obvious combinations of events. However, sometimes it helps to think about some more unusual scenarios just for the purpose of exercising our understanding of how these devices think. This

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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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How to Create #CCNA Troubleshooting Drills

How to Create #CCNA Troubleshooting Drills

🕔09:50, 20.Dec 2013

To answer #CCNA troubleshooting questions, particularly Simlet questions, you need to have skills with show commands. In particular, you need to be ready to predict the key information in each command when some configuration error exists. Today’s post discusses a

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OSPF Webinar Link Plus Questions Answered

🕔09:30, 29.Feb 2012

Pearson Education, publishers of the Cisco Press products, hosted me for a CCNA-level OSPF web cast back in February 2012. (You can go here to watch the video of the webcast.) Anyway, during the webcast, anyone watching could send in

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