D-Link DAS-3626, Руководство пользователя

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DAS-3626 VDSL2 Switch User Manual
The following fields can be set:
Parameter Description
From Port / To Port A consecutive group of ports may be configured starting with the selected port.
External Cost (0=Auto) The external cost defines a metric that indicates the relative cost of forwarding packets to
the specified port list. Port cost can be set automatically or as a metric value. The default
value is
0 (auto).
0 (auto) – Setting 0 for the external cost will automatically set the speed for forwarding
packets to the specified port(s) in the list for optimal efficiency. Default port cost: 100Mbps
port =
200000 . Gigabit port = 20000 .
value 1-200000000 – Define a value between 1 and 200000000 to determine the external
cost. The lower the number, the greater the probability the port will be chosen to forward
packets.
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
Auto parameter
will indicate that the port will be able to automatically enable edge port status if needed.
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 . The default value True is equivalent to the Auto
value.
Port STP Allows STP to be Enabled or Disabled for the ports.
Restricted Role Toggle between True and False to set whether this port is restricted to be selected as a
root port. The default value is False .
Restricted TCN Toggle between True and False to set whether this port is restricted to be selected as a
propagate topology change. The default value is False .
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 this window, click Switch Configuration > Spanning Tree > MST Configuration Identification as shown
below:
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