UMN:CLI
User Manual
V8102
230
7.15.2
Interval for Transmit ICMP Message
User can configure the interval for transmit ICMP message. After you configure the inter-
val, ICMP message will be blocked until the configured time based on the last message is
up. For example, if you configure the interval as 1 second, ICMP will not be sent within 1
second after the last message has been sent.
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” match-
es with the value of ICMP message. I
t 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.
The table 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
