Technology

The Vienna Internet eXchange is operated by the Vienna University Computer Center at three locations:

• VIX1: University of Vienna (in the center of Vienna)
• VIX2: Digital Realty Data Center (in the north of Vienna)
• VIX3: NTT Vienna 1 Data Center (in the south of Vienna)

These three locations are interconnected with path-redundant fiber optic links, traversing the Danube via different bridges. The cross-connections are currently operated at a bandwidth of 400 Gbps (maximum capacity: 9.6 Tbps).

VIX uses identical state-of-the-art technology at all three locations:

• high-performance Arista 7280 series switches
• redundant power supplies
• redundant power feeds with UPS and generator supply
• shared medium: Ethernet (10GBASE-LR, 100GBASE-LR4)
• participants may connect to one, two, or all three VIX locations at up to 100 Gbps per port
• remote connections and reseller connections possible
• support for IPv4 and IPv6 on the same peering LAN
• support for link aggregation
• port security mechanisms

• VIX participants install and operate their own routing infrastructure.
• Each peering at VIX is based on a bilateral agreement between the peers. However, there is no obligation to exchange traffic with all other participants.
• The appropriate routing registry for the documentation of VIX peerings is the RIPE Database. We recommend using the PeeringDB in addition.
• The required routing protocol for peerings at VIX is BGP4.
• Only one MAC address may be used per participant port.
• Additional services for VIX participants are available in the web portal.
• Peerings can be set up very easily via our route servers.
• When using the route servers, the AS112 service is automatically available.

The Internet Protocol version 6 (IPv6) has been productive at VIX since 2005. Each VIX Connection Agreement is valid for IPv6 as well as for IPv4.

If you want to enable IPv6 peerings on your VIX interface, please contact us by e-mail to noc (at) vix.at. We will gladly send you a suitable IPv6 address for your interface and add this address our database.