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A: Matching Port Numbers with ACLs 1
First, think of TCP headers, and the source port and destination port. Then think about the predictable port – the well-known port – and whether it will be the source or destination port. Then think...
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Q: Matching Port Numbers with ACLs 1
#CCNA ACL questions can uncover your weaknesses even without a detailed and complicated list of requirements to place in a single ACL. In fact, my “Acing the CCNA Exam” live course on Safari features...
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Interpreting show stp (1) – Answers
Of all #CCNA topics in the ICND2 half of CCNA, Spanning Tree Protocol (STP) looms with more intimidation than most. As for Mastering STP verification, the process begins with mastering the show...
View ArticleQuestion: Interpreting show stp (1)
To analyze Spanning Tree for #CCNA, you need to think about the root switch, then the root ports on the non-root switches, and then designated ports. That analysis usually begins with the show...
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Extended IPv4 ACL Drill 2 – Answers
Extended IPv4 ACLs? No problem. Matching packets going towards the client? A little more of a problem. Deciding whether you need to match ARP and OSPF in your ACL? Even more of a problem. This latest...
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Extended IPv4 ACL Drill 2
This next Extended IPv4 ACL Drill continues to focus on some key ACL concepts. You have to think about where the ACL will reside, and for what direction of packet flow, before choosing the syntax of...
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Extended IPv4 ACL Drill 1 – Answers
The previous post listed a set of ACL requirements that require an IPv4 Extended ACL. Your job: using those requirements, configure an extended named ACL. Of course, this post makes no sense without...
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Extended IPv4 ACL Drill 1
Extended Access Control Lists (ACLs) can be a challenge for many reasons. In the first few posts in this series, these ACL exercises will focus on just a few of those issues. In particular: The concept...
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EIGRP Enabler #3 – Answers
EIGRP Enabler exercise 3 asked you to configure four routers, specifically to add the EIGRP network commands. If you’ve not seen these before, check out the Routing Protocol Enabler intro post....
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EIGRP Enabler #3
The goal is to get so good at your OSPF and EIGRP network commands that you get bored with all these exercises. There yet? If not, here’s another. As always with the EIGRP and OSPF Enabler exercises,...
View ArticleCLI Vs API Twitter Chat
The Cisco SE organization and Cisco DevNet are teaming up to hold a Cisco Chat about CLI and API. It has a catchy title: “Have APIs Killed the CLI?”. This blog post gives some short background, with a...
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OSPFv2 Enabler #3 – Answers
This latest OSPF Enabler exercise asked you to configure four routers in a three-area design. As usual, the exercise asks for different styles of OSPFv2 network commands, for no other reason than to...
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OSPFv2 Enabler #3
In this latest OSPF Enabler exercise, you’ll configure a network of four routers with three areas. As always, the idea is simple: In one exercise, you’ll get to configure about 10 different OSPFv2...
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EIGRP Enabler #2 – Answers
This latest EIGRP Enabler exercise asked you to configure three routers, specifically to add the EIGRP network commands. This post lists the answers – simple enough. Two Books in a Box, for Less $:CCNA...
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EIGRP Enabler #2
Now for some more EIGRP work. Your job: read and react to a set of requirements to then choose how to configure about a dozen EIGRP network commands. Simple, useful, do it and move on to the next...
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OSPFv2 Enabler #2 – Answers
This latest OSPF Enabler exercise asked you to configure four routers in a two-area design. As usual, the exercise asks for different styles of OSPFv2 network commands, for no other reason than to give...
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OSPFv2 Enabler #2
Time for another OSPF Enabler exercise. The idea is simple: In one exercise, you’ll get to configure about 10 different OSPFv2 network commands, with different requirements for each. Just getting in...
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EIGRP Enabler #1 – Answers
The first EIGRP Enabler exercise asked you to configure four routers, specifically to add the EIGRP network commands. This post lists the answers – simple enough. ICND2 Premium Edition.eBooks in most...
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EIGRP Enabler #1
At some point, you need to master the network commands used with routing protocol configuration. This exercise gives you some practice on that one specific point, specific to EIGRP configuration. Your...
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OSPFv2 Enabler #1 – Answers
The first OSPF Enabler exercise asked you to configure three routers, specifically to add the OSPFv2 network commands. This post lists the answers – simple enough. The Topology It is probably best to...
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