# Repost: State of Lisp Implementations (2024)

DevFeed: [Repost: State of Lisp Implementations (2024)](<https://devfeed.tech/articles/repost-state-of-lisp-implementations-2024-11010.md>)

Original publisher: [Read original article](<https://blog.ipspace.net/2024/05/repost-state-of-lisp-implementations/>)

Published: 2024-05-07T06:21:00Z

Content type: opinion

Language: en

Sources: [ipSpace.net blog](<https://devfeed.tech/sources/ipspace-net-blog.md>)

Topics: [Lisp](<https://devfeed.tech/topics/lisp.md>), [Cisco](<https://devfeed.tech/topics/cisco.md>), [Networks](<https://devfeed.tech/topics/networks.md>), [iOS](<https://devfeed.tech/topics/ios.md>), [evpn](<https://devfeed.tech/topics/evpn.md>)

Tags: [cisco](<https://devfeed.tech/tags/cisco.md>), [design](<https://devfeed.tech/tags/design.md>), [development](<https://devfeed.tech/tags/development.md>), [evpn](<https://devfeed.tech/tags/evpn.md>), [ios](<https://devfeed.tech/tags/ios.md>), [lisp](<https://devfeed.tech/tags/lisp.md>), [mobility](<https://devfeed.tech/tags/mobility.md>), [network-design](<https://devfeed.tech/tags/network-design.md>), [networks](<https://devfeed.tech/tags/networks.md>), [routing](<https://devfeed.tech/tags/routing.md>), [software](<https://devfeed.tech/tags/software.md>)

## AI overview

This repost discusses the uncertain state of LISP support, including its removal from IOS XR and concerns about Cisco's future support. It describes the consequences for extreme-mobility and safety-critical networks, including possible parallel LISP and PMIPv6 backbones and the need for supplier and technology diversity.

## Source excerpt

You might remember Béla Várkonyi's use of LISP to build resilient ground-to-airplane networks from last week's repost. It seems he's not exactly happy with the current level of LISP support, at least based on what he wrote as a response to Jeff McLaughlin's claim that "I can tell you that our support for EVPN does not, in any way, indicate the retirement of LISP for SD-Access.": Nice to hear the Cisco intends to support LISP. However, it is removed from IOS XR already. So it is not that clear... If Cisco will stop supporting LISP, then we will be forced to create our own LISP routers, since we need it for extreme mobility environments. Read more ...