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Tab. 7.3, Mask calculation of default value – Siemens S223 User Manual

Page 171

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User Manual UMN:CLI
SURPASS hiD 6615 S223/S323 R1.5

A50010-Y3-C150-2-7619 171

To configure interval to transmit ICMP message, the administrator should configure the
type of message and the interval time.

Use the following command, to configure the interval for transmit ICMP message.

Command Mode

Description

ip icmp interval rate-mask MASK

Global

Configures the interval for transmit ICMP message.
MASK: user should input hexadecimal value until
0xFFFFFFFF. The default is 0x1818.

If mask that is input as hexadecimal number is calculated as binary number “1” means
“Status ON”, “0” means “Status OFF”. In binary number, if the digit showed as “1”
matches with the value of ICMP message. It means ICMP Message is selected as “Status
ON”. Digit value starts from 0.

For example, if hexadecimal number “8” is changed as binary number, it is “1000”. In
1000, 0 digit is “0” and 1 digit is “0”, 2 digit is “0” and 3 digit is “1”. The digit showed as “1”
is “3” and ICMP_DEST_UNREACH means ICMP value is “3”. Therefore,
ICMP_DEST_UNREACH is chosen the message of limiting the transmission time.

Default is 0x1818. If 1818 as hexadecimal number is changed as binary number, it is
1100000011000. By calculating from 0 digit, 3 digit, 4 digit, 11 digit, 12 digit is “1” and it is
“STATUS ON”. Therefore, the message that corresponds to 3, 4, 11, and 12 is chosen as
the message limiting the transmission rate.

Tab. 7.3 shows the result of mask calculation of default value.

Type Status

ICMP_ECHOREPLY (0)

OFF

ICMP_DEST_UNREACH (3)

ON

ICMP_SOURCE_QUENCH (4)

ON

ICMP_REDIRECT (5)

OFF

ICMP_ECHO (8)

OFF

ICMP_TIME_EXCEEDED (11)

ON

ICMP_PARAMETERPROB (12)

ON

ICMP_TIMESTAMP (13)

OFF

ICMP_TIMESTAMPREPLY (14)

OFF

ICMP_INFO_REQUEST (15)

OFF

ICMP_INFO_REPLY (16)

OFF

ICMP_ADDRESS (17)

OFF

ICMP_ADDRESSREPLY (18)

OFF

Tab. 7.3

Mask Calculation of Default Value

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