# IPv4 ECMP Works on Arista cEOS Release 4.35.2F

DevFeed: [IPv4 ECMP Works on Arista cEOS Release 4.35.2F](<https://devfeed.tech/articles/ipv4-ecmp-works-on-arista-ceos-release-4-35-2f-11343.md>)

Original publisher: [Read original article](<https://blog.ipspace.net/2026/03/ecmp-arista-ceos/>)

Published: 2026-03-12T09:09:00Z

Content type: opinion

Language: en

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

Topics: [IP routing](<https://devfeed.tech/topics/ip-routing.md>), [networking](<https://devfeed.tech/topics/networking.md>), [Linux](<https://devfeed.tech/topics/linux.md>)

Tags: [ip](<https://devfeed.tech/tags/ip.md>), [ip-routing](<https://devfeed.tech/tags/ip-routing.md>), [ipv4](<https://devfeed.tech/tags/ipv4.md>), [linux-kernel](<https://devfeed.tech/tags/linux-kernel.md>), [mpls](<https://devfeed.tech/tags/mpls.md>), [release](<https://devfeed.tech/tags/release.md>), [switching](<https://devfeed.tech/tags/switching.md>)

## AI overview

The article reports that IPv4 ECMP works on Arista cEOS release 4.35.02F, with traffic spreading across multiple nodes in the author's lab topology. It also observes that forwarded traffic uses ECMP while locally originated traffic does not, despite different routing-table entries.

## Source excerpt

When I wrote about the anycast-ECMP-in-MPLS behavior in 2011, I had to use Cisco IOS to prove that ECMP worked, since Arista cEOS (running the Linux kernel for IP forwarding) didn't install more than one equal-cost path into the Linux forwarding table. Arista cEOS got better in the meantime; IPv4 ECMP works like a charm on cEOS release 4.35.02F. With the same lab topology I'd used in 2021, I was able to see the traffic spread across multiple nodes: Read more ...