Recently, while trying to enable proxy arp on an interface, I noticed the presence of the sub interface command ‘ip local-proxy-arp’. I was a little puzzled and the googling I did didn’t help me get a better understanding of the concept. Bewildered, I turned to my favorite network forum, networking-forum.com and asked if someone could help out with an explanation…
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When you starting talking about DMVPN you’ll typically hear it being described as a Phase I, II, or III type DMVPN network, so let’s quickly discuss the differences between these three DMVPN phases:
There are so many different BGP explanations out there and what I wanted to do is gather all the information together about BGP maps and put it all in one post.
Everytime I sit down to BGP I always get confused about the quantity of many different “maps” that can be applied to the configuration.
As far as I’m aware there are 8 different BGP “maps” that we can use and I can never remember which one I should use for a particular task
BGP inject-map allows you to conditionally advertise a component subnet of a larger aggregate route. The component subnet does not have to be in the route table, it is generated by the router applying the inject-map. The route is only advertised if the aggregate route in the exist-map is matched. This feature provides a very powerful way to engineer traffic since it’s control mechanism is based on Longest prefix-matching behavior.
AutoInstall using DHCP allows for the configuration of a new Cisco router using Ethernet, Token Ring, and FDDI interfaces (the AutoInstall process using serial line interfaces remains unchanged from previous releases).
Note The term “router” is used in the following process to represent any supported Cisco device (including, for example, Access Servers).