Categories R&S

VPN technologies – DMVPN – Phase 1

Starting a new series about DMVPN. In this post, I will configure a basic DMVPN network, with one hub and 2 spoke sites.     Here is the link for the cisco documentation about DMVPN: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_dmvpn/configuration/15-mt/sec-conn-dmvpn-15-mt-book/sec-conn-dmvpn-dmvpn.html   And the link for everything related with NHRP: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_nhrp/configuration/15-mt/nhrp-15-mt-book/config-nhrp.html   And one very good article from INE with very […]

Read More
Categories R&S

L3 Technologies – EIGRP – Summarization

In this post I will have a look at the different ways to perform route summarization with EIGRP.   Here is the link to the Cisco documentation about EIGRP summarization: Cisco EIGRP IOS 15.3 Summarization   L3 Technologies – EIGRP – Summarization – network diagram   L3 Technologies – EIGRP – Summarization – Theory: By […]

Read More
Categories R&S

L3 technologies – EIGRP – Path Selection

I will now have a look at EIGRP path selection. For this I have extended our topology.   L3 technologies – EIGRP – Path Selection – Physical network diagram:   L3 technologies – EIGRP – Path Selection – Feasibility Condition: Here is the definition of the Feasibility condition: “If, for a destination, a neighbor router […]

Read More
Categories R&S

L3 Technologies – EIGRP – Authentication

In this post, I will have a look at the different authentication methods that can be used with EIGRP.   Cisco link for the configuration guide: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-mt/ire-15-mt-book/ire-sha-256.html   L3 Technologies – EIGRP – Authentication – Physical network diagram   L3 Technologies – EIGRP – Authentication – MD5:   MD5 is the less secured method to authenticate EIGRP. […]

Read More
Categories R&S

L3 technologies – EIGRP – Initialization

Here is my next CCIE series about EIGRP. In this first post, I will have a look on the basic EIGRP configuration.   This is the link to the Cisco configuration guide for EIGRP: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-mt/ire-15-mt-book/ire-enhanced-igrp.html   L3 technologies – EIGRP – Initialization –Network diagram   L3 technologies – EIGRP – Initialization – Basic configuration: Let’s […]

Read More