Work in progress:Job Snijders is an Internet engineer and analyzes and architects global networks for future growth. Job has been actively involved in the Internet community in both operational, engineering, and architectural capacity, as a frequent presenter at network operator events such as NANOG, ITNOG, DKNOG, RIPE, NLNOG & APRICOT, and in a number of community projects for almost 20 years.
Job is co-chair of the IETF SSHM working group, co-chair of the IETF GROW working group, director of PeeringDB, director of the Route Server Support Foundation, and developer for the OpenBSD project.
Job's special interests include network routing policies, RPKI based routing security solutions, and Internet scale PKIX-RPKI & BGP deployments. Job helps maintain several tools such as IRRd, the OpenBSD RPKI validator rpki-client, the online console.rpki-client.org debugger, bgpq4, OpenBGPD, irrtree, rtrsub, and irrexplorer, and is active in the IETF where he have coauthored or contributed to RFCs and Internet-Drafts.
(author) - The Erik Synchronization Protocol for use with the Resource Public Key Infrastructure (RPKI)
Various writings on RPKI & Routing
-
The Scourge of Excessive AS-SETs-
RPKI's 2024 Year in Review-
War story: RPKI is working as intended-
Time's up! How RPKI ROAs perpetually are about to expire-
RPKI ROV Deployment Reaches Major Milestone-
RPKI's 2023 year in review: growth, governments, and innovation-
Using timestamps inside RPKI objects to optimize RRDP-RSYNC transport switchovers-
Exploring the Latest RPKI ROV Adoption Numbers-
Calgary Internet Exchange (YYCIX) deploys world's first ASPA-filtering Route Servers-
RPKI's 2022 year in review: growth and innovation-
How much does RPKI ROV reduce the propagation of invalid routes?-
Measuring RPKI ROV adoption with NetFlow-
Lacking contextual out-of-bounds checks for the RPKI ROA maxLength fieldvalue lead to unauthorized termination of internal RPKI-RTR sessions.
- Avoiding inconsistent RPKI publications on RSYNC servers:
rpki-rsync-move.sh.txt- Deep dive on RPKI manifest handling,
how routinator caused an RPKI outage- CARepository integrity issues in various RPKI validators:
manifest_handling_issue.txt- ARIN TA publishes objects with mismatching SignatureIdentifiers:
arin-manifest-issue-2020.08.12.txtInternet Governance / Policy work:
(author) - Revocation of Persistently Non-functional Delegated RPKI CAs
(editor) - Disclaimer of Warranties for ARIN's Trust Anchor Locator
(author) - RIPE NCC IRR Database Non-Authoritative Route Object Clean-up
(author) - RIPE DB-WG Out of region ROUTE(6) / AUT-NUM objects
(author) - RIPE DB-WG Change to AS-SET object naming rules
/
ARIN-2021-8(author) - ARIN Deprecation of the 'Autonomous System Originations' Field
Job has contributed to the following Internet-Drafts and RFCs:
(author) - Detecting RPKI Repository Delta Protocol (RRDP) Session Desynchronization
(author) - Border Gateway Protocol 4 (BGP-4) Send Hold Timer
(author) - Same-Origin Policy for the RPKI Repository Delta Protocol (RRDP)
(author) - On the Use of the Cryptographic Message Syntax (CMS) Signing-Time Attribute in Resource Public Key Infrastructure (RPKI) Signed Objects
(author) - A Profile for Route Origin Authorizations (ROAs)
(author) - RPKI Signed Checklists
(author) - The Use of maxLength in the Resource Public Key Infrastructure
(author) - Software Defects Considered Harmful
(author) - Extended BGP Administrative Shutdown Communication
(contributor) - Extended Message support for BGP
(author) - Mitigating the Negative Impact of Maintenance through BGP Session Culling
(contributor) - Graceful BGP Session Shutdown
(author) - Default External BGP (EBGP) Route Propagation Behavior without Policies
(author) - BGP Administrative Shutdown Communication
(author) - Use of BGP Large Communities
(contributor) - LISP Delegated Database Tree
(author) - Deprecation of BGP Path Attribute values 30, 31, 129, 241, 242, and 243
(author) - BGP Large Communities
(author) - LISP Canonical Address Format (LCAF)
(author) - BGP BLACKHOLE Community
(contributor) - Problem Definition and Classification of BGP Route Leaks
(contributor) - Impact of BGP Filtering on Inter-Domain Routing Policies
(contributor) - A Comparison of IPv6-over-IPv4 Tunnel Mechanisms
(contributor) - Locator/ID Separation Protocol (LISP)
Abandoned ideas:
- A profile for RPKI Signed Groupings of Autonomous System Numbers (ASGroup)
- The "import-via" and "export-via" attributes in RPSL Policy Specifications
- Prefix Limit Based ORF for BGP-4
Other projects
BGP Nyan Cat - fun with prefix flapping:
labs.ripe.net/Members/cteusche/bgp-meets-catCalculator written in 'route-map':
april fools nanog postingRPKI based Origin Validation implementation in 'route-map':
another april fools postingRING - troubleshooting on steroids:
ring.nlnog.netPresentations
- AMS-IX/MoreIP, June 5th 2025 -
video,
slides, SAFNOG 6, September 28th, 2021 -
slides, LINX102, August 2018 -
video, NLNOG, September 2016 -
videoLegal & Financial
Dutch Chamber of Commerce: 34327695
VAT/btw-id: NL002195612B17
IBAN: NL60BUNQ2068070219
BIC/SWIFT: BUNQNL2AXXX
Post address
Job Snijders
Theodorus Majofskistraat 100
1065 SZ Amsterdam
Netherlands
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