Internet Mix or IMIX is a term used to describe typical Internet traffic passing some network equipment such as routers, switches or firewalls. When measuring equipment performance using an IMIX of packets the performance is assumed to resemble what can be seen in actual real life.
Networking equipment that manipulates packets typically have non-wire rate performance and as such it can not deliver wire rate performance on small 64 byte packets, this is easier at 1500 byte packets - but none of these packet sizes resemble actual traffic seen on the Internet over some time.
The IMIX traffic profile is used in the industry to simulate real-world traffic patterns and packet distributions. IMIX profiles are based on statistical sampling done on Internet routers, and are published in various levels of granularity, such as “simple” and “complete.”
Mix profiles exist for IPv4, TCP, VPN (IPsec) and IPv6 traffic, distributions are similar but frame sizes vary given the different overhead and upper layer 2 limitations on MTU.
Here is an illustration of a typical mix:
| Packet size | # Packets | Bytes | Distribution |
|---|---|---|---|
| 64 | 67 | 4288 | 57% |
| 570 | 1 | 570 | 7% |
| 594 | 2 | 1188 | 16% |
| 1518 | 1 | 1518 | 20% |
No comments:
Post a Comment