i n t e l l i g e n t | w i r e l e s s | p l a t f o r m |
2.7.5. STP Settings Configuration
STP is disabled by default. The table below lists the default STP settings when the STP is enabled.
Table
Setting | Default Value | Range | Purpose |
Bridge priority | 32768 | A parameter used to identify the | |
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| root bridge in a spanning tree |
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| (instance of STP). The bridge |
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| with the lowest value has the |
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| highest priority and is the root. |
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|
Bridge max age | 20 | The interval a bridge will wait for | |
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| a hello packet from the root |
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| bridge before initiating a topology |
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| change. |
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|
Bridge hello time | 2 | The interval of time between | |
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| each configuration BPDU sent by |
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| the root bridge. |
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|
Bridge forward delay | 15 | The period of time a bridge will | |
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| wait (the listen and learn period) |
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| before beginning to forward data |
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| packets. |
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|
Ethernet port (ETH A) | 100 | The cost of using the port to | |
path cost |
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| reach the root bridge. When |
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| selecting among multiple links to |
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| the root bridge, STP chooses the |
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| link with the lowest path cost and |
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| blocks the other paths. Each port |
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| type has its own default STP path |
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| cost. |
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|
Ethernet port (ETH A) | 128 | The preference that STP gives to | |
priority |
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| this port relative to the other ports |
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| for forwarding traffic out of the |
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| spanning tree. |
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| A higher numerical value means |
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| a lower priority; thus, the highest |
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| priority is 8. |
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|
Ethernet port (ETH B) | 100 | The cost of using the port to | |
path cost |
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| reach the root bridge. When |
|
|
| selecting among multiple links to |
|
|
| the root bridge, STP chooses the |
|
|
| link with the lowest path cost and |
|
|
| blocks the other paths. Each port |
|
|
| type has its own default STP path |
|
|
| cost. |
|
|
|
|
Ethernet port (ETH B) | 128 | The preference that STP gives to | |
priority |
|
| this port relative to the other ports |
airClient™ Nexus User Guide | Page 25 of 66 |
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