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Interlogix NS2503-24P/2C User Manual User Manual

Page 110

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NS2503-24P/2C User Manual

110

Admin P2P:

The rapid state transitions possible within STP are dependent upon whether the

port concerned can only be connected to exactly another bridge (i.e. it is served

by a point-to-point LAN segment), or can be connected to two or more bridges

(i.e. it is served by a shared medium LAN segment). This function allows the P2P

status of the link to be manipulated administratively.

YES

means the port is regarded as a point-to-point link.

NO

means the port is regarded as a shared link.

AUTO

means the link type is determined by the auto-negotiation between

the two peers.

Admin Edge:

The port directly connected to end stations won’t create bridging loop in the

network. To configure the port as an edge port, set the port to “YES” status.

Admin Non STP:

The port includes the STP mathematic calculation.

YES

is not including STP mathematic calculation.

NO

is including the STP mathematic calculation.


Path cost “0” is used to indicate auto-configuration mode. When the short path cost method is selected
and the default path cost recommended by the IEEE 8021w standard exceeds 65,535, the default is set
to 65,535.


By default, the system automatically detects the speed and duplex mode used on each port, and configures the path cost
according to the values shown below.

Port Type

IEEE 802.1D-1998

IEEE 802.1w-2001

Ethernet

50-600

200,000-20,000,000

Fast Ethernet

10-60

20,000-2,000,000

Gigabit Ethernet

3-10

2,000-200,000

Table 4-8-1:

Recommended STP Path Cost Range

Port Type

Link Type

IEEE 802.1D-1998

IEEE 802.1w-2001

Ethernet

Half Duplex
Full Duplex
Trunk

100
95
90

2,000,000
1,999,999
1,000,000

Fast Ethernet

Half Duplex
Full Duplex
Trunk

19
18
15

200,000
100,000
50,000

Gigabit Ethernet

Full Duplex
Trunk

4
3

10,000
5,000

Table 4-8-2:

Recommended STP Path Costs