oxidecomputer / oxidecomputer/maghemite
mg-lower: route summarization support
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mg-lower
want
- Dominant language
- Rust
- Stars
- 94
- Forks
- 6
- Avg merge
- 1d 8h
- Merged PRs (30d)
- 12
Description
I noticed on a deployment if we have a pile of routes through the same nexthop that have overlapping prefixes, they all get installed onto the ASIC which is unnecessary.
For example
root@oxz_switch0:~# swadm route ls
Subnet Port Link Gateway
0.0.0.0/0 qsfp0 0 198.51.100.3
198.51.100.0/24 qsfp0 0 198.51.100.3
198.51.100.1/32 qsfp0 0 198.51.100.3
198.51.100.2/32 qsfp0 0 198.51.100.3
198.51.100.3/32 qsfp0 0 198.51.100.3
172.20.0.0/24 qsfp0 0 198.51.100.3
172.20.1.0/24 qsfp0 0 198.51.100.3
172.20.2.0/24 qsfp0 0 198.51.100.3
172.20.3.0/24 qsfp0 0 198.51.100.3
172.20.4.0/24 qsfp0 0 198.51.100.3
172.20.5.0/24 qsfp0 0 198.51.100.3
172.20.6.0/23 qsfp0 0 198.51.100.3
172.20.11.0/24 qsfp0 0 198.51.100.3
172.20.12.0/24 qsfp0 0 198.51.100.3
172.20.15.16/29 qsfp0 0 198.51.100.3
172.20.15.24/29 qsfp0 0 198.51.100.3
172.20.15.32/29 qsfp0 0 198.51.100.3
172.20.15.100/32 qsfp0 0 198.51.100.3
172.20.15.102/32 qsfp0 0 198.51.100.3
172.20.15.104/32 qsfp0 0 198.51.100.3
172.20.15.105/32 qsfp0 0 198.51.100.3
172.20.15.106/32 qsfp0 0 198.51.100.3
172.20.15.107/32 qsfp0 0 198.51.100.3
172.20.15.111/32 qsfp0 0 198.51.100.3
172.20.15.240/28 qsfp0 0 198.51.100.3
172.20.16.0/23 qsfp0 0 198.51.100.3
172.20.18.0/23 qsfp0 0 198.51.100.3
172.20.24.0/24 qsfp0 0 198.51.100.3
172.20.25.0/24 qsfp0 0 198.51.100.3
172.20.26.0/24 qsfp0 0 198.51.100.3
172.20.27.0/24 qsfp0 0 198.51.100.3
172.20.28.0/24 qsfp0 0 198.51.100.3
172.20.29.0/24 qsfp0 0 198.51.100.3
172.20.30.0/24 qsfp0 0 198.51.100.3
172.20.31.0/24 qsfp0 0 198.51.100.3
172.21.0.0/16 qsfp0 0 198.51.100.3
172.30.0.0/16 qsfp0 0 198.51.100.3
172.31.0.0/16 qsfp0 0 198.51.100.3
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The issue names no source files, tests, or entry points. Start by reproducing the route set with swadm route ls, then investigate the route-installation path and define how overlapping prefixes sharing a nexthop should be summarized; done means redundant routes are no longer installed on the ASIC without changing forwarding behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- networking
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100