The first D-GIX was a 10 Mbit/s switch. By the time D-GIX was replaced by Netnod the exchange point consisted of two FDDI switches in Stockholm and one was also installed in Gothenburg. Around 1998, the FDDI circuits were filled and traffic was heavily impacted by head-of-line blocking. At a Swedish Operator Forum meeting the alternatives were discussed. The options were basically two. The new Gigabit Ethernet standard, and a standard developed by Cisco called Spatial Reuse Protocol, SRP. The decision to go with SRP was basically based on the fact that at the time Gigabit Ethernet and SRP had roughly the same cost. SRP also did not have the issue of head-of-line blocking, and SRP had a larger MTU size than what Gigabit Ethernet had at the time. So the Swedish operators decided that Netnod should implement SRP. The SRP rings installed were running at 2x622Mbit/s in each city.