Chapter 3 Using the console interface 219

Using the Business Policy Switch 2000 Version 1.2

IGMP Configuration Menu screen

The IGMP Configuration Menu screen (Figure81) allows you to select the

appropriate screen to optimize IP Multicast packets in a bridged Ethernet

environment (see Chapter 1).

Tabl e 36 Rate Lim iting Configuration screen fields

Field Description
Port Indicates the switch port numbers that correspond to the field values in that row of
the screen (for example, the field values in row 2 apply to switch port 2) . Note th at
the values applied in the Switch or Stack row (last 2 rows) affect all standalone
switch ports or all switch ports in a stack.
Packet Type Allows you to select the packet types for rate-limiting or viewing.
Default Value Both
Range Both, Multicast, Broadcast
Limit Sets the percentage of port bandwidth allowed for forwarding the packet types
specified in the Packet Type field. When the threshold is exceede d, any addi tional
packets (specified in the Packet Type field) are discarded1.
Default Value None
Range None, 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%
Last 5 Minutes This read-only field indicates the percentage of packets (of the type specified in
the Packet Type field) received by the port in the last 5 minutes. This field prov ides
a running average of network activity and is updated every 15 seconds.
Note that this field indicates the receiving port’s view of network activity,
regardless of the rate-limiting setting.
Last Hour This read-only field indicates the percentage of packets (of the type specified in
the Packet Type field) received by the port in the last hour. This field provides a
running average of network activity and is updated every 5 minutes.
Note that this field indicates the receiving port’s view of network activity,
regardless of the rate-limiting setting.
Last 24 Hours This read-only field indicates the percentage of packets (of the type specified in
the Packet Type field) received by the port in the last 24 hours. This field prov ides
a running average of network activity and is updated every hour.
Note that this field indicates the receiving port’s view of network activity,
regardless of the rate-limiting setting.
1 Rate-limiting is disabled if this field is set to None. This allows you to select and view the percentage of specific packet
types present in the network, without inadvertently limiting the forwarding rate.