IS-IS Router Using Ethernet or TEB GRE Interfaces

This recipe demonstrates how to setup basic IS-IS routing between two nodes connected using either an Ethernet interface or a GRE interface in Transparent Ethernet Bridging (TEB) mode.

Warning

Due to the fact that IS-IS operates at L2, active IS-IS interfaces must be able to carry L2 information. Currently this is limited to Ethernet interfaces as well as GRE interfaces in Transparent Ethernet Bridging (TEB) mode.

See also

Intermediate System to Intermediate System (IS-IS)

• Required Information
  • R1 Environment
  • R2 Environment
  • Choose a Configuration Style
• IS-IS over Ethernet Interface
  • Configure R1
  • Configure R2
  • Next Steps
• IS-IS over TEB GRE Interface
  • Configure R1
  • Configure R2
  • Next Steps
• Finish Up
  • Check Neighbors
  • Check Routes
  • Check Connectivity