Chapter 4: Web configuration
148
NS3562-8P-2S-V2 Industrial Managed Switch User Manual
• Click
Refresh
to refresh the page immediately.
Port statistics
The STP Statistics page displays the STP port statistics counters for physical ports in
the currently selected switch.
The page includes the following fields:
Object
Description
Port
The switch port number of the logical RSTP port.
MSTP
The number of MSTP Configuration BPDU's received/transmitted on the
port.
RSTP
The number of RSTP Configuration BPDU's received/transmitted on the
port.
STP
The number of legacy STP Configuration BPDU's received/transmitted on
the port.
TCN
The number of (legacy) Topology Change Notification BPDU's
received/transmitted on the port.
Discarded Unknown
The number of unknown Spanning Tree BPDU's received (and discarded)
on the port.
Discarded Illegal
The number of illegal Spanning Tree BPDU's received (and discarded) on
the port.
Buttons
• Select the
Auto-refresh
check box to refresh the page automatically. Automatic
refresh occurs every three seconds.
• Click
Refresh
to refresh the page immediately.
• Click
Clear
to clear the counters for all ports.
Multicast
IGMP snooping
The Internet Group Management Protocol (IGMP) allows hosts and routers share
information about multicast groups memberships. IGMP snooping is a switch feature