Lucent Technologies PacketStar PSAX 2300, Руководство пользователя

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Chapter 5 Site-Specific Configuration
Internet Protocol (IP) Throttling
5-64 255-700-447
PacketStar
®
PSAX 2300 Multiservice Media Gateway User Guide
, Issue 1 Release 9.0.0
Allowed Rate Default: 2000 fps
Range: 100–2000 fps
Specifies the maximum bandwidth allowed to pass
through the
ETHERNET
or in-band management vir-
tual port into the PSAX system in the unit of frames
per second (fps). Select one of the values listed below.
Note: If you do not assign any value, then 2,000 fps
will be used. This value will correspond to 2000 x 64
x 8 bits/second = 1.024 Mbps for 64-byte frames,
2,000 x (576+18) x 8 = 9.504 Mbps for default frame
size of 594 bytes, or 2,000 x 1,518 x 8 = 24.288 Mbps
for 1,518-byte frames. The latter rate is larger than
the maximum rate supported by the 10BASE-T
ETH-
ERNET
port of the CPU module. For current MIPS
CPU/CPU2 modules, FTP sessions will rarely be
affected under the value of 1,500 and above. Lower
values of the Allowed Rate field will subsequently
cause greater loss of ingress packets.
100 fps Select this value to allow up to 100 frames per second
of input to the CPU module.
200 fps Select this value to allow up to 200 frames per second
of input to the CPU module.
300 fps Select this value to allow up to 300 frames per second
of input to the CPU module.
500 fps Select this value to allow up to 500 frames per second
of input to the CPU module.
1000 fps Select this value to allow up to 1,000 frames per sec-
ond of input to the CPU module.
2000 fps Select this value to allow up to 2,000 frames per sec-
ond of input to the CPU module.
Other fps Select this value to allow a number of frames per sec-
ond of input to the CPU module that is not selectable
from the other values in this field, and then enter the
rate you want to use in the Rate field that appears.
Rate Default: N/A
Range: 1–20000 fps This field appears when Other is selected in the
Allowed Rate field. Enter the rate you want to use.
See the Note in the previous field description for
more information. This field is display only unless
Other fps is selected in the Allowed Rate field.
Leaky Bucket Size Default: 32
Range: 1–20000
The virtual buffer that serves as a counter that moni-
tors the rate of ingress traffic to the CPU module. It
counts the number of packets and drops packets that
exceed the value you select for this field.
In general, the smaller the value that is used, the
more likely the ingress traffic will be dropped. The
greater value that is used, the more unlikely the
ingress packets will be dropped, and the more bursty
the ingress traffic may become.
Table 5-32. Field Descriptions for the IP Throttling Configuration Window (Continued)
Field Name Field Values Description