ABB EDS500 Series Function Manual page 34

Rate Limiting
DSL 1 Mbps
Figure 8: Rate Limiting per port
In estimating the bandwidth, already when feeding in the data stream a later overload
situation can be avoided in the furthur network.
Default configuration:
In default configuration receive-rate-limit and transmit-rate-limit are not set.
Some typical estimations for bandwidth requirements are:
Data transmission type
Voice over IP
Serial tunnel
IP camera (VGA, 25 pictures per s)
IEC 60870-5-104 (TCP/IP)
Table 12: Estimation of bandwidth requirement
When limiting the rate limiting only to certain frame type then the rate limiting can be used as
broadcast storm control.
Limit mode
all
flooding
multicast
broadcast
Table 13: Rate limiting and frame types
Commands to configure the Rate limiting:
< s e t s w i t c h { p o r t . . . } l i m i t - m o d e { . . . } >
< s e t s w i t c h { p o r t . . . } { r e c e i v e - r a t e - l i m i t | t r a n s m i t - r a t e -
l i m i t } { . . . } >
34
RTU
Limitation 256 kbps
Limitation 512 kbps
Quality
ISDN-grade approx. 80 kbps
GSM-grade approx. 16 kbps
Appr. 64 kbps
Still picture: H.264 approx. 440 kbps - 1,7
Mbps
Moving picture: MPEG-4 app. 735 kbps - 2,4
Mbps
MJPEG app. 8,8 Mbps - 12,1 Mbps
Appr. 64 kbps
Effect
The rate of all frames is limited
The rate of unicast frames with unknown tar-
get, multicast- and broadcast frames are lim-
ited.
The rate of multicast- and broadcast frames
are limited.
The rate of broadcast frames is limited.
Functions
Limits:
128 kbps
256 kbps
512 kbps
1024 kbps
2048 kbps
4096 kbps
8192 kbps
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