# Comparing IP and CLNP: Local (Node) Multihoming

DevFeed: [Comparing IP and CLNP: Local (Node) Multihoming](<https://devfeed.tech/articles/comparing-ip-and-clnp-local-node-multihoming-11166.md>)

Original publisher: [Read original article](<https://blog.ipspace.net/2025/04/comparing-ip-clnp-multihoming/>)

Published: 2025-04-02T07:21:00Z

Content type: comparison

Language: en

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

Topics: [networking](<https://devfeed.tech/topics/networking.md>), [Networks](<https://devfeed.tech/topics/networks.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>), [Routing (disambiguation)](<https://devfeed.tech/topics/routing.md>), [Firewall](<https://devfeed.tech/topics/firewall.md>), [Mainframe](<https://devfeed.tech/topics/mainframe.md>)

Tags: [firewall](<https://devfeed.tech/tags/firewall.md>), [ibm](<https://devfeed.tech/tags/ibm.md>), [ip](<https://devfeed.tech/tags/ip.md>), [networking-fundamentals](<https://devfeed.tech/tags/networking-fundamentals.md>), [networks](<https://devfeed.tech/tags/networks.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [routing](<https://devfeed.tech/tags/routing.md>), [stateful](<https://devfeed.tech/tags/stateful.md>), [tcp](<https://devfeed.tech/tags/tcp.md>), [tcp-ip](<https://devfeed.tech/tags/tcp-ip.md>)

## AI overview

The article compares local node multihoming in IP/TCP/IP and CLNP. It explains that TCP/IP multihomed hosts use multiple IP addresses and lack a single well-defined behavior, with strong and weak end-system models leading to routing asymmetry and complications for stateful firewalls. It describes loopback addressing and routing advertisements as a TCP/IP solution. The supplied excerpt is incomplete.

## Source excerpt

Another area where CLNP is a clear winner when compared to the TCP/IP stack is multi-homed nodes (nodes with multiple interfaces, not site multi-homing, where whole networks are connected to two upstream providers). Multi-homed TCP/IP nodes must have multiple IP addresses because IP uses address interfaces. There is no well-defined procedure in TCP/IP for how a multi-homed node should behave. In the early days of TCP/IP, they tried to address that in RFC 1122 (Host Requirements RFC), but even then, there were two ideas about dealing with multiple interfaces: the strong and weak end system models (more details). Read more ...