Upcoming Labs

The first few labs are already online; the list of ideas is much longer. Here they are:

Configure IS-IS Features

Passive IS-IS Interfaces
  • Explain the need for passive interfaces
  • Configure passive IS-IS interfaces
  • If available, turn off the advertisement of inter-router prefixes
Influence the Designated IS Election
  • Explain the need for DIS priority
  • Configure DIS priority on a router
Protect IS-IS Adjacencies with MD5 Authentication
  • Configure IS-IS area- and interface passwords
Route Redistribution into IS-IS
  • Configure static route and connected interface redistribution into IS-IS
Fast IS-IS Failure Detection and Convergence
  • Configure IS-IS timers
  • Use BFD

Advanced Labs

Multi-Level IS-IS Networks
  • Explain intra-area and inter-area routing
  • Configure a network with multiple areas and L1/L2 routers
Graceful Shutdown with IS-IS Overload Bit
  • Configure IS-IS overload bit or maximum metric to drain traffic from a transit router
Build an SR-MPLS Network with IS-IS
  • Build a BGP-free MPLS core using SR-MPLS with IS-IS
Configure IS-IS Fast Reroute Using TI-LFA
  • In a triangle network, configure the longer path as a backup path
Using IS-IS with SRv6
  • Build a BGP-free IPv6 core using SRv6 for end-to-end transport

Troubleshooting

Troubleshoot IS-IS Adjacencies
This lab will include the most common mistakes that prevent an IS-IS adjacency from forming, including:
  • MTU mismatch
  • L1/L2 mismatch
  • Area mismatch on L1 adjacency
  • 3-way handshake on point-to-point links