Alcatel-Lucent 6850-48 Network Guide

Page of 1162
Managing IP
Configuring IP
page 24-32
OmniSwitch AOS Release 6 Network Configuration Guide
September 2009
Setting the Minimum Packet Gap
The minimum packet gap is the time required between sending messages of a like type. For instance, if the 
minimum packet gap for Address Mask request messages is 40 microseconds, and an Address Mask 
message is sent, at least 40 microseconds must pass before another one could be sent.
To set the minimum packet gap, use the min-pkt-gap keyword with any of the ICMP control commands. 
For example, to set the Source Quench minimum packet gap to 100 microseconds, enter the following:
-> icmp type 4 code 0 min-pkt-gap 100
Likewise, to set the Timestamp Reply minimum packet gap to 100 microseconds, enter the following:
-> icmp timestamp reply min-pkt-gap 100
The default minimum packet gap for ICMP messages is 0.
ICMP Control Table
The ICMP Control Table displays the ICMP control messages, whether they are enabled or disabled, and 
the minimum packet gap times. Use the 
 command to display the table.
ICMP Statistics Table
The ICMP Statistics Table displays the ICMP statistics and errors. This data can be used to monitor and 
troubleshoot IP on the switch. Use the 
 command to display the table.
Using the Ping Command
 command is used to test whether an IP destination can be reached from the local switch. This 
command sends an ICMP echo request to a destination and then waits for a reply. To ping a destination, 
enter the ping command and enter either the destination’s IP address or host name. The switch will ping 
the destination by using the default frame count, packet size, interval, and time-out parameters (6 frames, 
64 bytes, 1 second, and 5 seconds, respectively). For example:
-> ping 172.22.2.115
When you ping a device, the device IP address or host name is required. Optionally, you may also specify:
• Count. Use the count keyword to set the number of frames to be transmitted.
• SizeUse the size keyword to set the size, in bytes, of the data portion of the packet sent for this ping. 
You can specify a size or a range of sizes up to 60000. 
• Interval. Use the interval keyword to set the frequency, in seconds, that the switch will poll the host.
• Time-out. Use the time-out keyword to set the number of seconds the program will wait for a response 
before timing out.
For example, to send a ping with a count of 2, a size of 32 bytes, an interval of 2 seconds, and a time-out 
of 10 seconds you would enter:
-> ping 172.22.2.115 count 2 size 32 interval 2 timeout 10
Note. If you change the default values, they will only apply to the current ping. The next time you use the 
ping command, the default values will be used unless you enter different values again.