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Multi-Homed BGP and Policy-Based Routing

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Rating: 5.0/5 (2 votes cast)
By Marko Milivojevic on February 8th, 2012
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This blog explores another interesting question a student of ours asked the other day. His network is dual-homed to two ISPs on a single router. He wanted to make sure one of his subnets is always routed over ISP-1 and the other over ISP-2, unless there is a network failure. There was also a requirement for the return traffic to take the same route, i.e. no asymmetric routing. This will be a fun one to solve.
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Tags: BGP, CCIE, PBR, r&s, Routing & Switching, sp
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IPexpert’s February Newsletter For Cisco Certification Candidates

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By Sanjana Desai on February 7th, 2012
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Check out our Monthly Cisco Certification Training Newsletterfor news on how you can save $1500 on the CCIE BLS and Win a Free CCNA or CCNP Bootcamp Course. Register for the CCIE R&S Written and Lab Fundamentals Course with Special Guest CCIE Instructors and Demo our NEW IPv4/6 Multicast Operation and Troubleshooting Guide.

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Tags: CCIE, ccna, ccnp, Cisco Certification, r&s, Security, Voice, Wireless
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CCIE Security Written 3.0 – GRE and mGRE Sample Questions

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Rating: 5.0/5 (1 vote cast)
By Anthony Sequeira on February 7th, 2012
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In a previous post here at blog.ipexpert.com, we took a detailed look at GRE and mGRE technologies in the scope of the CCIE Security 3.0 Written Exam. By reader request, I have drafted up some sample questions on these technologies to give readers a sense for what one should know prior to walking into this important written exam.

Question 1:

What IP protocol number is used by GRE?

a. 41
b. 47
c. 51
d. 57

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Tags: CCIE, exams, GRE, mgre, practice, Security
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CCIE Security Written 3.0 – The OSI Model

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Rating: 5.0/5 (1 vote cast)
By Anthony Sequeira on February 6th, 2012
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OK readers – time for the easy part of the General Networking section of the CCIE Security 3.0 written exam. The OSI model. We need to memorize the layers, their basic function, their order, and the protocols that operate at each layer. We should already know most of this, but here it is to review just in case.

Application

This layer interacts with software applications that implement a communicating component

  • HTTP
  • SHTTP
  • SMTP
  • FTP
  • DNS
  • Telnet
  • SNMP
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Tags: CCIE, model, osi, Security, Written
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CCIE Security Written 3.0 – NHRP Configuration

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Rating: 5.0/5 (1 vote cast)
By Anthony Sequeira on February 5th, 2012
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In a previous post about the Next Hop Resolution Protocol (NHRP), we examined the theory and functionality of NHRP. In this post, we will examine the configuration commands that make NHRP possible. This will conclude the information that is required to be known about this important protocol for the written exam. NOTE: This does not conclude information that should be known about the main use of NHRP – the Dynamic Multi-point VPN (DMVPN). That is a topic for other blog posts.

about the Next Hop Resolution Protocol (NHRP), we examined the theory and functionality of NHRP. In this post, we will examine the configuration commands that make NHRP possible. This will conclude the information required about this important protocol for the written exam. NOTE: This does not conclude information that should be known about the main use of NHRP – the Dynamic Multi-point VPN (DMVPN). That is a topic for other blog posts.
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Tags: blueprint, CCIE, nhrp, practice, Security, study, Written
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