Customer Requirements for Future Rotuers -- What's Next? Ascend

Jeff Wabik

Table of Contents

• Stan Barber's Notes
• October 1996 NANOG Home Page

Stan Barber's Notes

There are a wide variety of connectivity options. IP/SONET/OC3 will be available in December 1996

The current product is 16x16 non-blocking crossbar switch.

• 16Gb/SEC switch fabric
• > 12Gb/Sec actual aggregate payload transfer
• High port density per card
• Multiple dedicated processor per card
• Managing CPU not at all involved in forwarding
• Cache free forwarding table lookups (best case -- worse case)
• Linear PPP scaling each media card
• Fast Receive-once, send many multi-cast
• Precedence handling

What we do

• Cache free forwarding table lookups (best case == worse case)
• Performance measured bi-directionally at the same thing
• Multi-processor architecture

Interoperability

• Traditional "Router" functionality
• Other techniques
  • Tag switching
  • Netflow

Administration

• Command line interface

Firewall and filtering is available

Tighten security of router management Most things are there. Some new BGP features are not.

Future

• 16xOC192 = ~160Gb/dec actual payload
• 4 OC48 ports per card