
grf16:/root brstat |
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Bridge Group bg1 |
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Spanning Tree: | Enabled |
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Designated Root: | 32768 00:c0:80:84:8c:eb |
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Bridge ID: | 32768 00:c0:80:96:38:68 |
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Root Port: ga0180, Root Path Cost: 10 |
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Topology Change Detected: No |
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Root Max Age: 20, Hello Time: | 2, Forward Delay: 15 |
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Bridge Max Age: 20, Hello Time: | 2, Forward Delay: 15, Hold Time: 1 |
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| Path | Desig Desig | Desig |
Interface Port ID Con State | Cost | Cost Bridge | Port |
ga010 | 128 1 | No Disabled | 10 |
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*ga0180 | 128 2 | Yes Forwarding 10 | 0 | 32768 00:c0:80:84:8c:eb 128 2 | |
Dump snapshot finished at Mon Jun | 15 20:01:51 1998 |
When port 0 is plugged in again, it resumes and takes over port 1, which in turn falls back to the blocked state, as the following screen shot proves:
grf16:/root brstat |
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Bridge Group bg1 |
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Spanning Tree: | Enabled |
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Designated Root: | 32768 00:c0:80:84:8c:eb |
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Bridge ID: | 32768 00:c0:80:96:38:68 |
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Root Port: ga010, Root Path Cost: 10 |
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Topology Change Detected: No |
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Root Max Age: 20, Hello Time: | 2, Forward Delay: 15 |
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Bridge Max Age: 20, Hello Time: | 2, Forward Delay: 15, Hold Time: 1 |
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| Path | Desig Desig | Desig |
Interface Port ID Con State | Cost | Cost Bridge | Port |
*ga010 | 128 1 | Yes Forwarding 10 | 0 | 32768 | 00:c0:80:84:8c:eb | 128 1 | |
ga0180 | 128 2 | Yes Blocking | 10 | 0 | 32768 | 00:c0:80:84:8c:eb | 128 2 |
Dump snapshot finished at Mon Jun | 15 20:02:03 1998 |
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We expect this to happen also with the
7.2 ATM OC-12c Backbone - One Port
This setup is basically the same as using just one port of an ATM