UMN:CLI User Manual
SURPASS hiD 6615 S223/S323 R1.5
170 A50010-Y3-C150-2-7619
Type Value Type Value
ICMP_ECHOREPLY 0 ICMP_DEST_UNREACH 3
ICMP_SOURCE_QUENCH 4 ICMP_REDIRECT 5
ICMP_ECHO 8 ICMP_TIME_EXCEEDED 11
ICMP_PARAMETERPROB 12 ICMP_TIMESTAMP 13
ICMP_TIMESTAMPREPLY 14 ICMP_INFO_REQUEST 15
ICMP_INFO_REPLY 16 ICMP_ADDRESS 17
ICMP_ADDRESSREPLY 18
Tab. 7.2 ICMP Message Type
The following figure shows simple ICMP message construction.
0 7 15 16 31
8-bit Type 8-bit Code 16-bit Checksum
(Contents Depend on Type and Code)
It is possible to control ICMP message through user’s configuration. You can configure to
block the echo reply message to the partner who is doing ping test to device and interval
to transmit ICMP message.
7.14.1 Blocking Echo Reply Message
It is possible to configure block echo reply message to the partner who is doing ping test
to switch. To block echo reply message, use the following commands.
Command Mode Description
ip icmp ignore echo all
Blocks echo reply message to all partners who are
taking ping test to device.
ip icmp ignore echo broadcast
Global
Blocks echo reply message to partner who is taking
broadcast ping test to device.
To release the blocked echo reply message, use the following commands.
Command Mode Description
no ip icmp ignore echo all
Releases blocked echo reply message to all partners
who are taking ping test to device.
no ip icmp ignore echo broad-
cast
Global
Releases blocked echo reply message to partner who
is taking broadcast ping test to device.
7.14.2 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 period 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.
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