ANSNet Update
IETF - NSR Meeting
July 1994
Guy Almes
ANS, Inc.
100 Clearbrook Road
Elmsford, New York 10523
914-789-5333
almes@ans.net
Agenda
- ANSNet Statistics
- Traffic
- Networks
- CIDR Growth
- Routing Stability
- NAP Deployment
- End-to-End Performance Studies
Growth in Network Usage
Figure 1 (GIF - 22747 bytes)
Growth of Configured Networks
Figure 2 (GIF - 35265 bytes)
ANS CIDR Deployment Status
952 aggregates currently configured for AS690
- 751 aggregates actually announced to AS690
- 6,081 class-based destinations represented
Internal Routing Stability (IBGP) - percent full connectivity
Figure 3 (GIF - 4323 bytes)
External Routing Stability (EBGP) - percent full connectivity
Figure 4 (GIF - 5742 bytes)
ANS Router Software Activity
IBM Router System Software Enhancements
- New RS960 buffering and queueing microcode
- Increased packets buffers
- Dynamic allocation of buffers
- Design for improved end-to-end TCP performance
ANS Router Software Activity
SLSP support for broadcast media has been completed
Eliminated fake AS
Implemented IBGP server to reduce AS690 IBGP mesh
(90+ --> 60+) (work still in progress)
Gated policy code improvements (work still in progress)
- Reduce gated memory consumption and config. file complexity
- Coloring of classful routes
- For ANSnet gateway selection
- Kernel routing table code modularity improvements
Table
Figure 5 (GIF - 38088 bytes)
Graph
Figure 6 (GIF - 6335 bytes)
- Single TCP flow
- V4.20L++ microcode (224 buffers @2KB)
- V4.20J microcode has 160 buffers @2KB
- Previous build had 35 buffers @4352B
- 70 mS round trip time
- 41 Mbps @384KB wondow size
- with no background traffic
- SGI Indy/SC end systems
Graph
Figure 7 (GIF - 13032 bytes)
- 4 simulataneous TCP flows
- V4.20L++ microcode (224 buffers @2KB)
- V4.20J Microcode has 160 buffers @2KB
- Previous build had 35 buffers @4352B
- 70 mS round trip time
- 42 Mbps @96KB window size
with no other background traffic
- SGI Indy/SC end systems