Dell PowerConnect 5324 User's Guide Addendum - Page 61

MSTP Interface Settings

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Root - Provides the lowest cost path to forward packets to root device. Designated - Indicates the port or LAG via which the designated device is attached to the LAN. Alternate - Provides an alternate path to the root device from the root interface. Backup - Provides a backup path to the designated port path toward the Spanning Tree leaves. Backup ports occur only when two ports are connected in a loop by a point-to-point link. Backup ports also occur when a LAN has two or more connections connected to a shared segment. Disabled - Indicates the port is not participating in the Spanning Tree. Interface Priority (0-240,in steps of 16) - Defines the interface priority for specified instance. The default value is 128. Path Cost - Indicates the port contribution to the Spanning Tree instance root path cost. If the Long path cost method was specified in the page, the field value range is 1-200,000,000. If the Short path cost method was specified, the field value range is 1-65,535. Default Path Cost - If the Long path cost method was specified in the page, the default path cost values are: Ethernet (10 Mbps) - 2,000,000 Fast Ethernet (100 Mbps) - 200,000 Gigabit Ethernet (1000 Mbps) - 20,000 Port-Channel - 20,000 If the Short path cost method was specified, the default path cost values are: Ethernet (10 Mbps) - 100 Fast Ethernet (100 Mbps) - 19 Gigabit Ethernet (1000 Mbps) - 4 Port-Channel - 4 Root - Provides the lowest cost path to forward packets to the root device. Designated Bridge ID - The bridge ID number that connects the link or shared LAN to the root. Designated Port ID - The Port ID Number on the designated bridge that connects the link or the shared LAN to the root. Designated Cost - Cost of the path from the link or the shared LAN to the root. Forward Transitions - Number of times the port changed to the forwarding state. Remain Hops - Indicates the number of hops remaining to the next destination. Viewing the MSTP Interface Table 1 Open the MSTP Interface Settings page. 2 Click Show All. 61

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61
Root
— Provides the lowest cost path to forward packets to root device.
Designated
— Indicates the port or LAG via which the designated device is attached to the LAN.
Alternate
— Provides an alternate path to the root device from the root interface.
Backup
— Provides a backup path to the designated port path toward the Spanning Tree leaves. Backup
ports occur only when two ports are connected in a loop by a point-to-point link. Backup ports also occur
when a LAN has two or more connections connected to a shared segment.
Disabled
— Indicates the port is not participating in the Spanning Tree.
Interface Priority (0-240,in steps of 16) —
Defines the interface priority for specified instance. The default
value is 128.
P
ath Cost
— Indicates the port contribution to the Spanning Tree instance root path cost. If the Long path cost
method was specified in the
page, the field value range is 1-200,000,000. If the Short path cost method was
specified, the field value range is 1-65,535.
Default Path Cost
— If the Long path cost method was specified in the
page, the default path cost values are:
Ethernet (10 Mbps) - 2,000,000
Fast Ethernet (100 Mbps) - 200,000
Gigabit Ethernet (1000 Mbps) - 20,000
Port-Channel - 20,000
If the Short path cost method was specified, the default path cost values are:
Ethernet (10 Mbps) - 100
Fast Ethernet (100 Mbps) - 19
Gigabit Ethernet (1000 Mbps) - 4
Port-Channel - 4
Root —
Provides the lowest cost path to forward packets to the root device.
Designated Bridge ID —
The bridge ID number that connects the link or shared LAN to the root.
Designated Port ID —
The Port ID Number on the designated bridge that connects the link or the shared LAN
to the root.
Designated Cost —
Cost of the path from the link or the shared LAN to the root.
Forward Transitions —
Number of times the port changed to the forwarding state.
Remain Hops —
Indicates the number of hops remaining to the next destination.
Viewing the MSTP Interface Table
1
Open the
MSTP Interface Settings
page.
2
Click
Show All
.