Nortel SMC 2450, Implementation Manual

Page: 214 / 262

Page 214 of 260 Limits and Scaling
553-3001-225 Standard 1.00 May 2006
Configuration limits
Firewall limits
Engineering limitations
Because the hardware is a PC platform, small packet performance can be a
limitation for high-end systems. The hardware provides at least 100 Mbps
(Megabits per second) throughput for 128 byte packets or approximately
100,000 pps (100 Kpps) in each direction, with essentially zero packet loss.
This throughput is sufficient to support approximately 1000 concurrent calls,
assuming 50-100 pps/call in each direction.
It is important to note that this applies to packet traversal across the SMC, and
in both directions (200 Mbps bidirectionally). In a typical deployment, call
signaling is much less than 100 Mbps in each direction but the packet sizes
Parameter Limit
Secure Multimedia Zones 4
Networks 512
Services 512
Flows 32
Keys 8
UNIStim Policies 64
UNIStim Rules 512
UNIStim Servers 32
Firewall Rules 1024
Parameter Limit
Connections 700,000 across all zones