| 摘要 |
If a selected packet switch connected to a neighboring packet switch makes first information identifying the neighboring packet switch available, element managers and processes retrieve the first information from the selected packet switch. The first information is derived by the selected packet switch from communication via a first protocol between the selected packet switch and the neighboring packet switch. If the first information is not available to the element manager and if the selected packet switch makes second information identifying the neighboring packet switch available to the element manager, the element managers and processes retrieve the second information from the selected packet switch. The second information is derived from communication via a second protocol between the selected packet switch and the neighboring packet switch and the first and second protocols are different protocols.
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