INTERNAL MAINTENANCE ASSOCIATION END POINT (MEP) FOR SHARING STATE INFORMATION
2009
Online
Patent
A network node includes a central processor card and a plurality of line cards. Each line card generates a maintenance association end point (MEP) entity that can respond to connectivity fault management (CFM) frames. The MEP entity on each line card periodically generates and transmits a multicast connectivity check message (CCM) to the other line cards in the network node. The CCM includes a card-information TLV and, optionally, a trunk-status TLV. Card-information TLVs include the slot number and card type of the transmitting line card. Trunk-status TLVs include the trunk state of each trunk supported by the transmitting line card. The line cards of the node consider a given line card to be down when three consecutive CCMs from that line card are missed. In response to recognizing a down line card, the other line cards can initiate an action, such as determine the trunks supported by the down line card and trigger a trunk switchover.
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INTERNAL MAINTENANCE ASSOCIATION END POINT (MEP) FOR SHARING STATE INFORMATION
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Autor/in / Beteiligte Person: | Fitzgerald, Deborah ; Romanus, Piotr ; Osswald, John ; Keesara, Srikanth |
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Veröffentlichung: | 2009 |
Medientyp: | Patent |
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