- Written by Nandan Saha
- Posted on 8月 24, 2020
- Updated on 3月 5, 2024
- 8897 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 Kundan Sen
- Posted on 8月 23, 2019
- Updated on 9月 5, 2019
- 4839 Views
EOS 4.22.1F adds support for disabling the IS IS authentication check for received IS IS PDUs. By enabling this
- Written by Pauric Ward
- Posted on 3月 13, 2024
- Updated on 3月 19, 2024
- 625 Views
Administrative Groups (AG) provide a way to associate certain attributes or policies with links, enabling network administrators to control the routing decisions based on specific criteria. Extended Administrative Groups (EAG) are an extension of AG which allow a larger range of admin groups to be utilized for various Traffic Engineering (TE) purposes within a network.
- Written by Arpit Bansal
- Posted on 12月 21, 2020
- Updated on 1月 17, 2022
- 6155 Views
IGP shortcuts enable traffic to get forwarded along traffic engineered paths computed by RSVP using a modified SPF
- Written by Tanushree Bansal
- Posted on 6月 11, 2019
- Updated on 6月 20, 2019
- 4945 Views
This feature implements RFC6119, which allows the extension of IS IS protocol to carry IPv6 Traffic Engineering
- Written by Tony Li
- Posted on 12月 22, 2020
- Updated on 12月 22, 2020
- 5606 Views
IS IS area proxy allows the creation of more scalable networks. IS IS already has hierarchical mechanisms for
- Written by Nitin Sao
- Posted on 11月 9, 2021
- Updated on 11月 9, 2021
- 4624 Views
This feature allows configuration of the IS IS CSNP generation interval. The default CSNP interval is 10
- Written by Sarah Chen
- Posted on 1月 12, 2022
- Updated on 10月 30, 2023
- 7489 Views
IS-IS flexible algorithm (FlexAlgo) provides a lightweight, simplified mechanism for performing basic traffic engineering functions within a single IS-IS area. FlexAlgo requires the cooperation of all nodes within the IS-IS area but does not require an external controller. Paths are computed by each node within the area, resulting in an MPLS switched forwarding path to nodes that are advertising a node Segment Identifier (SID) for the algorithm. The results of the path computation are placed in the colored tunnel RIB or system tunnel RIB, which simplifies route resolution.
- Written by Chris Roche
- Posted on 4月 20, 2020
- Updated on 4月 26, 2021
- 4916 Views
The IS IS maximum LSP size feature provides the ability to configure the maximum LSP size that the IS IS protocol will
- Written by Arpit Bansal
- Posted on 8月 18, 2020
- Updated on 8月 18, 2020
- 5161 Views
Level 1 2 routers set attached bit in their Level 1 LSPs to indicate their reachability to the rest of the network. A
- Written by Pintu Kumar
- Posted on 4月 23, 2018
- Updated on 2月 24, 2023
- 5699 Views
Traffic Engineering (TE) provides a mechanism to network administrators to control the path that a data packet takes, bypassing the standard routing model which uses routes along the shortest path. Traffic engineered paths are generally computed on the head-end routers of the topology based on various constraints (e.g. minimum bandwidth, affinity) configured for those paths and attributes (e.g available bandwidth, color) received from devices in the network topology.
- Written by Manoj Agiwal
- Posted on 9月 30, 2019
- Updated on 9月 30, 2019
- 4787 Views
This feature allows a user to configure multiple static adjacency SIDs for an IS IS adjacency. This feature is an
- Written by Girish Dasari
- Posted on 5月 11, 2021
- Updated on 5月 11, 2021
- 4874 Views
IS IS adjacency is not formed between devices with different address families configured. For example, a router
- Written by Saurav Arora
- Posted on 1月 7, 2022
- Updated on 1月 7, 2022
- 4962 Views
Traffic steering enables traffic for a specified set of prefixes to get forwarded along traffic engineered paths
- Written by Kundan Sen
- Posted on 8月 18, 2022
- Updated on 8月 22, 2022
- 3679 Views
This feature adds support for configuring multiple area addresses in an IS-IS instance.
- Written by Sandeep Kopuri
- Posted on 10月 7, 2019
- Updated on 8月 31, 2023
- 8103 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.
- Written by Kundan Sen
- Posted on 11月 12, 2019
- Updated on 11月 12, 2019
- 4431 Views
EOS 4.23.0F adds support for redistributing DHCPv6 routes in IS IS when using the multi agent routing protocol mode.