- Written by Nandan Saha
- Posted on August 24, 2020
- Updated on March 5, 2024
- 9199 Views
The BGP-LS extension allows IGPs (OSPF/IS-IS) link state database information to be injected into BGP. This is typically used in deployments where some external component, (like a controller or Path Computation Engine) can do centralized path computations by learning the entire IGP topology through BGP-LS. The controller can then communicate the computed paths based on the BGP-LS updates to the head end device in the network. The mechanism used by the controller to communicate the computed TE paths is outside the scope of this document. Using BGP-LS instead of an IGP peering with the controller to distribute IGP link state information has the following advantages.
- Written by Navneet Sinha
- Posted on June 29, 2016
- Updated on May 7, 2024
- 10928 Views
Segment Routing provides mechanism to define end-to-end paths within a topology by encoding paths as sequences of sub-paths or instructions. These sub-paths or instructions are referred to as “segments”. IS-IS Segment Routing (henceforth referred to as IS-IS SR) provides means to advertise such segments through IS-IS protocol.
- Written by Manoj Agiwal
- Posted on September 30, 2019
- Updated on September 30, 2019
- 5029 Views
This feature allows a user to configure multiple static adjacency SIDs for an IS IS adjacency. This feature is an
- Written by David Cronin
- Posted on March 3, 2022
- Updated on March 21, 2024
- 8959 Views
Routing Control Functions (RCF) is a language that can be used to express route filtering and attribute modification logic in a powerful and programmatic fashion.
- Written by Zhen Xue
- Posted on June 29, 2020
- Updated on June 5, 2023
- 8264 Views
Bidirectional Forwarding Detection (BFD) is a protocol that provides low-overhead, short-duration detection of failures of arbitrary paths between two systems.
- Written by Manoharan Sundaramoorthy
- Posted on November 12, 2019
- Updated on November 15, 2019
- 7834 Views
Segment Routing Traffic Engineering Policy (SR TE) aka SR Policy makes use of Segment Routing (SR) to allow a headend
- Written by Nandan Saha
- Posted on August 26, 2019
- Updated on September 5, 2019
- 7599 Views
Segment Routing Traffic Engineering Policy (SR TE) aka SR Policy makes use of Segment Routing (SR) to allow a headend
- Written by Nikhil Goyal
- Posted on January 29, 2024
- Updated on January 29, 2024
- 1388 Views
Segment Routing provides a mechanism to define end-to-end paths within a topology by encoding paths as sequences of sub-paths or instructions. These sub-paths or instructions are referred to as “segments”. OSPF Segment Routing (henceforth referred to as OSPF SR) provides means to advertise such segments through OSPF protocol.
- Written by Sandeep Kopuri
- Posted on October 7, 2019
- Updated on August 31, 2023
- 8368 Views
Topology Independent Fast Reroute, or TI-LFA, uses IS-IS SR to build loop-free alternate paths along the post-convergence path. These loop-free alternates provide fast convergence.