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ES3000 User Guide
4-60
ICMP is the basic ping command. When a ping command is issued,
the packet sent is an ICMP echo packet. The packet waits for the
ICMP echo reply packet to complete the ping process. The ICMP
returns additional information to an echo reply if there is a ping
failure (network or host unreachable etc.).
Source IP Address: The Source IP Address only accepts IP version 4 addresses (four bytes
long). The format is four numbers separated by three decimal points.
For example, 61.31.38.225.
Destination IP Address: The destination Internet Protocol Address. Same format as Source IP
address.
Source Layer 4 Port: The source transportation layer port number of a data packet. It is
two bytes with a value between 0 and 65535. Values under 1024 are
reserved for specific applications. Symbol recommends using a port
number over 1024.
Destination Layer 4 Port: The destination transportation layer port number of a data packet.
The format and allocation are the same as the Source Layer 4 Port.