3Com 8807 Command Reference Manual page 1038

1036 C 61: S
HAPTER YSTEM
M C
AINTENANCE OMMANDS
-h ttl: Configures the TTL value for echo requests to be sent. The TTL value ranges
from 1 to 255. The default value is 255.
-i: Specifies an interface to send packets.
interface-type: Specifies the interface type.
interface-number: Specifies the interface number.
-n: Configures to take the host parameter as IP address without domain name
resolution.
-p: pattern is the hexadecimal padding of ICMP echo-request, for example -p ff
pads the packet completely with ff. By default, the starting padding is 0x01,
crescent, and the ending padding is 0x09, and then repeat.
-q: Configures not to display any other detailed information except statistics.
-r: Record route. By default, the system does not record route.
-s packetsize: Specifies the length of ECHO-REQUEST (excluding IP and ICMP
packet header) in bytes. The length of the echo-request packet defaults to 56
bytes.
-t timeout: Maximum waiting time after sending the echo-request (measured in
ms). The time defaults to 2000 ms.
-tos tos: Specifies TOS value for echo requests to be sent, range from 0 to 255.
The default value is 0.
-v: Displays other received ICMP packets (non echo-response). By default, no other
non echo-response ICMP packets is displayed.
-vpn-instance vpn-instance-nam: VPN instance name.
host: Destination host domain name or IP address of the destination host.
ip: Chooses IP ICMP packet.
Description
Use the ping command to check the IP network connection and the reachability
of the host.
The ping command sends ICMP ECHO-REQUEST message to the destination. If
the network to the destination works well, then the destination host will send
ICMP ECHO-REPLY to the source host after receiving ICMP ECHO-REQUEST.
Perform ping command to troubleshoot the network connection and line quality.
The output information includes:
Responses to each of the ECHO-REQUEST messages. If the response message is
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not received until timeout, output "Request time out". Or display response
message bytes, packet sequence number, TTL and response time.