Reports & Publications

Ascend Communications: GRF 1600 and GRF 400ATM OC-12 Forwarding Performance

Sponsor: Ascend Comm. (Lucent)
Ascend Communications: GRF 1600 and GRF 400ATM OC-12 Forwarding Performance

Abstract

Ascend Communications commissioned The Tolly Group to test the ATM OC-12 (622 Mbit/s) forwarding performance of its GRF™ 1600 and GRF 400. The Tolly Group determined aggregate throughput by sending streams of traffic through the device under test. Additional streams were added until each of the 16 modules in the chassis operated at maximum throughput. Additionally, to approximate a real-world scenario, The Tolly Group determined how the router performed while forwarding packets to varying Class C IP destination addresses. Testing was performed during September 1997.

Test Highlights

  • The GRF 1600’s aggregate ATM OC-12 throughput forwarding 64-byte IP packets is more than 4.7 million packets per second (pps), with each of 16 modules processing approximately 295,000 pps.
  • The GRF 1600 backplane forwards data from 16 simultaneous ATM OC-12 modules, each offering 100% of usable OC-12 bandwidth, for an aggregate of 8.3 Gbit/s with 1,518-byte IP packets.
  • The GRF backplane scales linearly to handle full output from all 16 operating OC-12 modules.
  • The GRF 400, with up to four modules, the capacity of its chassis, achieves per module throughput similar to the GRF 1600.
  • Forwarding to varying IP destination addresses does not significantly degrade throughput.

    • Report Information

    Document Number:
    7306
    Publication Date:
    11/1/1997
    Page Count:
    4
    Category:
    ATM, Service Provider-Class Technology
    View all reports from Ascend Comm. (Lucent)