In this post, we introduce basic LISP configuration and operation using packet captures and packet walks.
Now that we've covered this new routing paradigm that LISP introduces in the previous post and understood some commonly used terms, we will move on to basic LISP operations.
The topology that we will be using is the following:
This is a new series that will cover Cisco's Software Defined Access architecture/solution over time. There are several moving pieces to this - in this post, we're going to start with a key component, which is LISP.
This is a new series that will cover Cisco's Software Defined Access architecture/solution over time. There are several moving pieces to this - we're going to start with a key component, which is LISP.
LISP stands for Locator/ID Separation protocol. Let's quickly revisit how endpoints are/were identified - with a simple IP address (IPv4/IPv6, what have you). The IP address was both the location and the identity of the endpoint. LISP (which serves as a routing architecture), aims to decouple the identity of an endpoint from its location.
The IP address continues to be the identity of the endpoint however, its location is now advertised as a separate entity (or address space) as well.
A simple visual comparison helps understand this better:
