User`s guide

24-port NWay Ethernet Switch User’s Guide
116 Web-Based Network Management
sending its own BPDU to all other switches for permission to become the Root Bridge. If it turns out
that your Switch has the lowest Bridge Identifier, it will become the Root Bridge.
♦ STP State
The Spanning Tree Protocol state for a selected port can either be
Enabled
or
Disabled
.
♦ Cost
The Path Cost is a read-only parameter. The 100Mbps segment has an assigned Path Cost of
19, and each 10Mbps segment has an assigned Path Cost of 100.
♦ Priority
Port Priority is a read-write object that can be set from 0 to 255. This is the priority number
of the port. The lower the port priority, the more chance the bridge has of becoming the root port. Zero
is the highest priority.
IGMP Filtering
IGMP Settings
Figure 7-15. IGMP Settings window
Internet Group Management Protocol (IGMP) snooping allows the Switch to recognize IGMP queries and
reports sent between network stations or devices and an IGMP host. When enabled for IGMP snooping, the
Switch can open or close a port to a specific device based on IGMP messages passing through the switch.
To configure the IGMP, enter a value between 30 and 9999 seconds in the
IP Multicast Filtering Age-out
Timer
field and then change the
IP Multicast Filtering (IGMP Snooping)
setting from
Disable
to
Enable
.
Click the
Apply
button to let the changes take effect.