2025-07-17 10:29 | -- (permalink)
The IETF 123 network connects to the Internet with 10Gb/s donated by Colt to ESPanix peering with Hurricane Electric for global transit.
The IETF NOC supplies connectivity for the conference space and the venue hotel.
The IETF network covers the guest rooms and the public spaces throughout the Meliá Castilla using the 'ietf-hotel' SSID. If you have performance issues with this network, please let us know.
It's important to note that while the IETF meeting network provides internet connectivity, guest rooms and public spaces are covered by the hotel's access points. As such, there may be limitations to the extent of improvements we can make. If you experience any issues with the 'ietf-hotel' SSID, you can contact our Help Desk or email support@ietf.org, and we will be happy to assist you.
WiFi (802.11 a/g/n/ac/ax) is provided throughout the Meliá Castilla on 5GHz bands with IPv4 and IPv6.
The IETF meeting WiFi is WPA3 PSK with a fallback to WPA2. While we'd like to be able to only do WPA3, we've discovered that many devices don't yet support it, so we currently are using Transition mode (fallback to WPA2).
The default network (SSID “ietf”) will allow your device to signal a preference for IPv6-only operation while still supporting IPv4 if needed via translation mechanisms by implementing the “IPv6-Only Preferred Option” [RFC 8925]. This builds on the trials during IETF 122 Bangkok, and IETF 121 Dublin. For more information see:
https://www.ietf.org/blog/ietf-ipv6-mostly-meeting-network
Most users should choose the 'ietf' SSID:
password: ietfietf
If you are not able to connect use 'ietf-dual-stack'
password: ietfietf
Here’s a quick summary of the available WiFi networks:
| SSID | Description | Frequencies | IP Versions |
|---|---|---|---|
| ietf | IPv6-Only Preferred with Option for DHCPv4 [RFC 8925] | 5Ghz only | v6 - NAT64 - v4 |
| ietf-dual-stack | Dual-stack provides both globally routable IPv4 and IPv6 addresses | 5Ghz only | v4 - v6 |
| eduroam | Educational users | 2.4 and 5Ghz | v4 - v6 |
The WiFi network implements two BCP38-like filters:
The Shared Workspace is located in Doblón. The Shared Workspace is open 8:00-19:00 beginning Sunday at 16:00 and ending on Friday, at 15:00. The room consists of table seats, wired access, and 220V power ports.
When using the Ethernet connections in the Shared Workspace, IPv4 addresses are provided by DHCP. Please use Stateless Auto-configuration for IPv6 (SLAAC). A DHCPv6 server or RDNSS will provide network information.
IT support is being provided next to the Registration Desk and will be staffed during the following hours:
| Day | Hours |
|---|---|
| Sunday | 16:00 - 19:00 |
| Monday | 8:30 - 17:00 |
| Tuesday | 8:30 - 17:00 |
| Wednesday | 8:30 - 17:00 |
| Thursday | 8:30 - 17:00 |
| Friday | 8:30 - 13:00 |
To communicate with the NOC staff, send an email to support@ietf.org with as much detail regarding your issue and configuration as possible.
Please provide the following information:
This information will expedite ticket processing. If you're on-site and need direct network assistance (i.e., you have no network), please go to the Help Desk.
The Secretariat has a ticket system to report problems with the meetings. Please send mail to: support@ietf.org to request help. The Secretariat is responsible for helping with the following:
The following network services are provided:
| Service | Address | Notes |
|---|---|---|
| NTP | ntp.meeting.ietf.org | A stratum 2 time service is provided via unicast IPv4 and IPv6 |
| DNS | ns1.meeting.ietf.org ns2.meeting.ietf.org | Validating recursive resolvers. The local domain is meeting.ietf.org. |
On the 'ietf' SSID, these services are provided by the following servers:
| Name | IPv4 | IPv6 |
|---|---|---|
| services-1.meeting.ietf.org | 31.130.229.9 | 2001:67c:370:229::9 |
| services-2.meeting.ietf.org | 31.130.229.10 | 2001:67c:370:229::10 |
On the 'ietf-ipv6-mostly' SSID, these services are provided by the following servers:
| Name | IPv4 | IPv6 |
|---|---|---|
| services-1.meeting.ietf.org | 31.130.229.6 | 2001:67c:370:229::6 |
| services-2.meeting.ietf.org | 31.130.229.7 | 2001:67c:370:229::7 |
There is a geolocation feed published here: https://noc.ietf.org/geo/google.csv
Geolocation service for event networks is often incorrect. Suggestions and assistance are welcomed. You can also try searching via https://www.google.com/ncr (no country re-direct).
Experiments on the IETF network need to be approved by the IETF Chair. For IETF 123, no network experiments were requested.
The NOC team is conducting an internal experiment with new wireless hardware during IETF 123. In the auditorium, we are deploying Cisco 9176 access points, which support Wi-Fi 7. These access points are intended to provide Wi-Fi service throughout the week in this room. However, we are prepared to fall back to the standard Cisco 9115 models if needed.
The 9176 access points are integrated into the production network and configured identically to our existing infrastructure. The team will evaluate the performance and reliability of the new hardware ahead of the planned full rollout at IETF 124 in Montréal.
If you have feedback or encounter issues while connected in the auditorium, please let us know by emailing support@ietf.org.
The IETF network is made possible by our dedicated volunteer team, some of whom have the support of their employers. If you see any of these amazing volunteers in the halls, please be sure to thank them for their hard work and commitment!
Volunteers:
Staff:
Contributors:
Connectivity: