SprintLink

NSFNET Transition Update -- SprintLink

Sean Doran

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Table of Contents

Stan Barber's Notes

Sean noted that Sprintlink is no longer talking to MAE-EAST, but MAE-EAST+ only. Sprintlink has now been moved from the Government systems to Business systems and is becoming a real product. The busy line is from Fort Worth and DC. ICM and Sprintlink are both being moved to MAE-EAST+. This accounts for about 1/2 the total traffic at MAE-EAST+ (about 26Mb/sec). CIX traffic is almost non-existant.

The PacBell NAP connection is still being negociated. Sprintlink (via ICM) is already at FIX-WEST and Sprintlink will have their own line into MAE-WEST very soon.

ICM has an AUP and a different routing policy from Sprintlink. They are both managed by the same engineering team. The ICM remains in the Government systems while Sprintlink has moved to the Business systems group. Sprint uses ASes to aggregate traffic at the POP and send only the aggregate information into the core AS (1239). AS1790-1795 is only used at the POPs. The use of this scheme keeps the convergence time during a circuit down (or router down) very very fast (20 seconds in some cases). The Backbone routers also have the highspeed customer interconnections. Sprint plans to use Gigaswitches to suceed the FDDI links at the Sprint POPs. There is also a plan to put a private FDDI between the backbone boxes at each POP. There will be new pops in Sprint. Kasas City, Mo, Cheyanne WY, Atlanta and Seattle....Each pop is colocated at Sprint switching sites and this gives access to the Sprint Sonet switching network.

NYSERNET is currently the biggest regional injecting about 5 Mb/sec per connection (they have two) and THENET is injecting about 8Mb/sec via their single connection. Sean does not have specific numbers for this meeting.


Copyright © 1995 Stan Barber. Reproduction with attribution granted.
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