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Path Cost Mode
This parameter is used by the spanning tree protocol to determine how
the value of the path cost is configured. The following values can be
specified for this parameter:
−
Manual
: In this case the path cost will be taken from the
Manual Port
Path Cost
parameter.
−
High
: The path cost will be determined by the 1000/LineSpeed
formula.
−
Normal
: The path cost will be determined by the 100/LineSpeed
formula.
−
Low
: The path cost will be determined by 10/LineSpeed formula.
Note:
LineSpeed
is the speed of attached LAN in Mbps.
•
Manual Port Path Cost
This parameter specifies the path cost to be used when the
Path Cost
Mode
is set to
manual
.
•
Port Priority
Used by the spanning tree protocol to determine which port will be the
root port on the Multiprotocol Interconnect module when another port
has the same path cost as the root port on the STP segment to which it
is attached.
5. Optionally, you may set the security and filtering parameters as described in
11.8.5, “Filtering for Bridging Functions” on page 270.
11.8.4.2 Configuring for Source-Route Transparent Bridging
Configuring for source-route transparent bridging is similar to the configuration
for transparent bridging with the following differences:
1. Configure the
Bridging Systems Parameters
as described in 11.8.4.1,
“Configuring for Transparent Bridging” on page 262 with the following
exception:
•
You must assign a
bridge number
in the range (0-15) to your
Multiprotocol Interconnect module using the
SRT Bridge Number
parameter. When you assign a bridge number, you effectively enable the
Multiprotocol Interconnect module as a source-route transparent bridge.
2. Configure transparent bridging parameters for the port(s) which are to
perform source-route transparent bridging as described in 11.8.4.1,
“Configuring for Transparent Bridging” on page 262. Note that the
Multiprotocol Interconnect module is shipped with transparent bridging
enabled for each port.
3. Select
Source Routing Port Parameters
from the
Bridge Menu
. A panel as
shown in Figure 155 on page 268 will be displayed.
Chapter 11. 8260 Multiprotocol Interconnect Module 267