D-Link DES-3528 - xStack Switch - Stackable User Manual - page 119
xStack DES-3528 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
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Migrate
Setting this parameter as Yes will set the ports to send out BPDU packets to other
bridges, requesting information on their STP setting If the Switch is configured for RSTP,
the port will be capable to migrate from 802.1d STP to 802.1w RSTP. Migration should be
set as yes on ports connected to network stations or segments that are capable of being
upgraded to 802.1w RSTP on all or some portion of the segment.
Edge
Choosing the True parameter designates the port as an edge port. Edge ports cannot
create loops, however an edge port can lose edge port status if a topology change creates
a potential for a loop. An edge port normally should not receive BPDU packets. If a BPDU
packet is received, it automatically loses edge port status. Choosing the False parameter
indicates that the port does not have edge port status.
P2P
Choosing the True parameter indicates a point-to-point (P2P) shared link. P2P ports are
similar to edge ports, however they are restricted in that a P2P port must operate in full-
duplex. Like edge ports, P2P ports transition to a forwarding state rapidly thus benefiting
from RSTP. A p2p value of false indicates that the port cannot have p2p status. Auto
allows the port to have p2p status whenever possible and operate as if the p2p status
were true. If the port cannot maintain this status, (for example if the port is forced to half-
duplex operation) the p2p status changes to operate as if the p2p value were False. The
default setting for this parameter is True.
Port STP
Toggle from Disabled to Enabled to implement BPDU packet forwarding.
Restricted Role
Toggle between True and False to set the restricted role state of the packet.
Restricted TCN
Toggle between True and False to set the restricted TCN of the packet
Forward BPDU
This field can be Enabled or Disabled. When Enabled, it allows the forwarding of STP
BPDU packets from other network devices. The default is Enabled.
Click Apply to implement changes made.
MST Configuration Identification
The following windows in the MST Configuration Identification section allow the user to configure a MSTI instance
on the Switch. These settings will uniquely identify a multiple spanning tree instance set on the Switch. The Switch
initially possesses one CIST or Common Internal Spanning Tree of which the user may modify the parameters for but
cannot change the MSTI ID for, and cannot be deleted.
To view the MST Configuration Identification window, click L2 Features > Spanning Tree > MST Configuration
Identification:
Figure 7- 40. MST Configuration Identification window