Alcatel Carrier Internetworking Solutions Switch/Router ユーザーズマニュアル

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Multicast Claiming
Page 9-32
Multicast Claiming
Multicast claiming can be enabled for networks with heavy multicast traffic. When enabled, 
multicast claiming frees the 
MPX
 from processing multicast packets by off-loading this traffic 
to the switching modules. When multicast claiming is enabled, the switch “claims” destination 
multicast addresses and places them in the 
CAM
s of all switching modules in the switch.
You can enable multicast claiming by adding the following line to the 
mpx.cmd
 file:
bslLearnMcPkt=1
You can use the 
edit
 command to make this change. (See Chapter 7, “Managing Files,” for 
instructions on using the 
edit
 command.) You will need to reboot the switch for this parame-
ter to take effect. Multicast claiming can later be disabled by changing the setting for this 
parameter to zero (0), as follows:
bslLearnMcPkt=0
An alternative method for managing multicast traffic is through the use of Multicast 
VLANs
. See 
Chapter 27, “Managing AutoTracker” and Chapter 28, “Managing Multicast 
VLANs” 
for further 
information. 
Disabling Flood Limits
Two 
UI
 commands are available for controlling flood limits for individual ports and Groups. 
The 
modvp
 command (described in Chapter 24, “Managing Groups and Ports”) allows you to 
control the flood limits for a specific port. The 
flc
 command (described in Chapter 22, 
“Configuring Bridging Parameters”) allows you to configure flood limits for all ports in a 
group.
You can also disable flood limits on a switch-wide basis by adding the following line to the 
mpx.cmd
 file:
disableFloodLimiting=1
You can use the 
edit
 command to make this change. See Chapter 11, “Managing Files,” for 
instructions on using the 
edit
 command. You will need to reboot the switch for this parame-
ter to take effect.