Port settings:
RSTP State
– including the port in the STP / RSTP protocol. If support of the
ring topology on a specific port is not required, this port can be excluded from
RSTP. However, note that if this port becomes a backup line, this may lead to
the looping of packets and a storm.
Port Priority
– port priority (0-240) changes in steps of 16.
Cost
– the cost of the port's path (1-200000000). If there are several alternative
paths, the one with the minimum sum of the cost of path is always chosen. The
cost of the port depends on its throughput, for the FastEthernet port it is
200000, for the port GigabitEthernet it is 20000.
Auto cost
– select the cost of the port path. The cost of the path is chosen
based on the port's throughput. If the tick is not set, the cost of the path is taken
from the
Cost
field.
Edge
– manual or automatic detection of the edge port. Edge port is a port that
directly connects to a network segment,
where the creation of a loop is impossible. An example of an edge port is a
port directly connected to a workstation. Ports configured as edge ports go into
the packet propagation state immediately, bypassing the listening and learning
states. The edge port loses its status immediately as soon as it accepts a BPDU
package, becoming a usual spanning tree port.
PTP
– manual or automatic detection of a point-to-point connection, that
provides a quick transition to the mode of packet propagation. The P2P port is
used to connect to other bridges.
When setting
Forward Delay Time
,
Bridge Hello Time
,
Bridge Max Age
,
the following condition should be met:
2*(
Forward Delay Time
- 1) >=
Bridge Max Age
>= 2*(
Bridge Hello Time
+ 1).
After configuring RSTP, check the resulting topology in the
RSTP Status
tab.
5.3.19 Configuring IGMP
IGMP → IGMP Snooping
Figure 5.3.19.1 Basic settings of IGMP Snooping
IGMP snooping
is designed to prevent broadcasting of multicast traffic from
being relayed to consumer computers that do not explicitly claim to be interested in
