Alcatel Carrier Internetworking Solutions Switch/Router 用户手册

Page 21-11

GMAP

 is inactive by default. In addition to enabling and disabling 

GMAP

, you can configure 

the time between packet transmissions (when multiple packets are required for an update), 
the time between updates, and the length of time 

GMAP

 will retain its current information.

Use the 

 command to display or change the state of 

GMAP

. A prompt similar to the 

following displays:

Enter 

 or 

 or press 

 to keep the current value. A message similar to the following 

displays:

To change the state of 

GMAP

 without displaying the current state first, enter the command 

with the desired value. For example:

The following message displays:

Use the 

 command to display or change the interpacket gap time used when 

multiple packets are required for an update. When there are many 

MAC

 addresses on mobile 

ports, more than one 

GMAP

 packet is required for an update. Typically the gap time does not 

have to be changed, but you may want to modify it if traffic spikes are occurring in the 
network. 

To view the current gap time, enter the following command:

A message similar to the following displays:

To change the gap time, enter the command with the desired value (any value between 0 and 
65535). For example:

A message displays similar to the following:

The switch approximates the gap time because its internal clock does not use milliseconds. For 
any value shorter than one second, the switch uses 1/60 second increments called “ticks.” The 
default for gap time is 8 ticks or approximately 133 milliseconds. Any value you enter will be 
rounded to the nearest tick.