This soft copy for use by IBM employees only.
To enable connectivity between the switches, we configure an SSI connection between them. This is done using the SET PORT command:
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8285> set port 1.13 enable ssi 155000 | |||||
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When setting up your SSI parameters, make certain that you satisfy the following conditions:
1.The ATM network address (the first 11 bytes of the ATM address) for each switch is the same.
2.The ATM cluster number (11th byte of the ATM address) is the same on each switch.
3.The hub numbers (13th byte of the ATM address) are different.
Even though the port may be physically up, that is receiving and transmitting properly, if it is misconfigurated, it will be reported as being not in service. If this happens, The 8285 will try to provide helpful error messages in the IX Status field returned by the SHOW PORT command with the VERBOSE option.
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8285> show port 1.13 verbose | ||||||
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| Type Mode | Status |
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| 1.13:SSI enabled |
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| SSI Bandwidth | : 155000 Kbps |
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| Connector | : SC DUPLEX |
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| Media | : Multimode fiber |
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| Port speed | : 155000 Kbps |
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| Remote device is active |
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| IX status | : HUB numbers identical |
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| Scrambling mode | : frame and cell |
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| Clock mode | : internal |
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A list of some of these messages is given in Table 34.
Table 34 (Page 1 of 2). | IX Status Messages and Causes |
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IX Status Message |
| Possible Causes | Suggestions |
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IX OK |
| Link is configured | None. |
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| properly and active. |
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Attached to non SSI port |
| Remote device is not | Disable the remote port, |
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| configured to support the | then enable it for SSI. |
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| SSI protocol. |
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Hub numbers identical |
| Both switches have the | Change the ATM address |
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| same ATM network | of one of the switches so |
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| prefix. | that at least the hub |
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| number is different. |
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