Our site uses cookies – some are essential to make the site work; others help us improve the user experience. By using the site, you consent to the use of these cookies. To learn more about cookies and how you can disable them, please read our privacy statement.
IS-IS - INTRODUCTION
ISIS protocol overview, introduction to the CLNS addressing, routing levels and general operation of the ISIS routing
Loading video...
NOTE: You can only see a limited low resolution version of the video, if you want to view the full version please sign up and get any of our plans!
Video Description
IS-IS: Intermediate System to Intermediate System Routing protocol
Standard protocol developed by ISO for CLNS networks
RFC 1195: Use of OSI IS-IS for Routing in TCP/IP and Dual Environments
Encapsulated directly over data-link frames
Uses CLNS addressing scheme: NSAP
Link-State Protocol
Dijkstra (SPF) algorithm
Uses adjacencies to exchange information
The messages (hello/LSP/PSNP/CSNP) from each router arrive to all of the devices in the area:
Messages are stored in the LSDB
Each router has a full picture of the network topology
Metric based on the interface cost
Widely used protocol in the SP cores.
Rating
Global
comments powered by Disqus
Related videos
IS-IS - CISCO SUMMARIZATION AND ROUTE LEAKING
In this video we go through the creation of summary advertisements and route leaking on Cisco IOS devices
IS-IS - CLNS ADDRESSING
CLNS addressing structure, how a NET addresses is built for integrated ISIS and the two most common ways to structure a NET address (using loopbacks and mac)