D-Link DGS-3312SR Инструкция по эксплуатации онлайн [93/290] 12494

DGS-3312SR Stackable Gigabit Layer 3 Switch

Operational Status – Previously Configured MSTI

indows:

Figure 4- 43. STP Instance

The following parameters may be viewed in the STP Instance Operational Status w

Para em ter Description

Des n

Bridge

s of the Root Bridge.

ig ated Root

This field will show the priority and MAC addres

External Root Cost

This 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.

Regional Root Bridge

This field will show the priority and MAC address of the Regional (Internal) Root

Bridge. This MAC address should be the MAC address of the Switch.

Internal Root Cost

This parameter is set to represent the relative cost of forwarding packets to

specified ports when an interface is selected within a STP instance. The default

setting is 0 (auto). There are two options:

• the internalCost will set quickest

value is

derived from the media speed of the interface.

• value 1-2000000 - Selecting this parameter with a value in the range of 1-

0 (auto) - Selecting this parameter for

route automatically and optimally for an interface. The default

2000000 will set the quickest route when a loop occurs. A lower Internal

cost represents a quicker transmission.

Designated Bridge

This field will show the priority and MAC address of the Designated Bridge. The

information shown in this table comes from a BPDU packet originating from this

bridge.

Root Port

This is the port on the Switch that is physically connected to the Root Bridge.