METHOD FOR IMPLEMENTING SYNCHRONIZATION OF LINK STATE DATABASE, ROUTER, LINE CARD AND MASTER BOARD
First Claim
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1. A method for implementing synchronization of link state database (LSDB), comprising:
- receiving a link state advertisement (LSA) message; and
comparing the LSA message with an LSA message in a LSDB, updating the LSA message in the LSDB when recognizing that the LSA message received is a new message by comparing, and transmitting the LSA message received to a virtual neighbor which has established virtual neighborhood.
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Abstract
A router is provided including a line card (LC), an active master board (AMB), a standby master board (SMB) and a LC for implementing a simple synchronization of a link state database (LSDB).
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Citations
15 Claims
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1. A method for implementing synchronization of link state database (LSDB), comprising:
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receiving a link state advertisement (LSA) message; and comparing the LSA message with an LSA message in a LSDB, updating the LSA message in the LSDB when recognizing that the LSA message received is a new message by comparing, and transmitting the LSA message received to a virtual neighbor which has established virtual neighborhood. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A router, comprising:
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a line card (LC) adapted to receive a state advertisement (LSA) message, compare the LSA message received with a LSA message in a link state database (LSDB), update the LSA message in the LSDB when recognizing the LSA message received is a new message by comparing, and transmit the LSA message received to an active master board (AMB) and a standby master board (SMB); the AMB adapted to receive the LSA message sent by the LC, compare the LSA message received with the LSA message in the LSDB, update the LSA message in the LSDB when recognizing that the LSA message received is a new message by comparing, and transmit the LSA message received to the SMB and other LCs except the LC of a transmitting party; and the SMB adapted to receive the LSA message sent by the LC or the AMB which has established virtual neighborhood. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A line card (LC), comprising:
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a comparing unit adapted to compare the LSA message received with the LSA message in the LSDB after receiving the LSA message; a first processing unit adapted to update the LSA message in the LSDB when the comparing unit recognizes that the LSA message received is a new message by comparing, transmit the LSA message received to the AMB and the SMB if the LSA message received comes from an outer router, and transmit the LSA message received to the AMB and the outer router if the LSA message received comes from the AMB; a second processing unit adapted to transmit the LSA message in the LSDB to the outer router when the comparing unit recognizes that the LSA message received is an old message by comparing; a third processing unit adapted to return an ACK message to the transmitting party when the comparing unit recognizes that the LSA message received is the same message by comparing; and a virtual neighborhood creating unit adapted to create a virtual interface and establish the virtual neighborhood with the AMB and the SMB via the virtual interface.
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15. An active master board (AMB), comprising:
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a comparing unit adapted to compare the LSA message received with the LSA message in the LSDB after receiving the LSA message sent by the LC; a first processing unit adapted to update the LSA message in the LSDB when the comparing unit recognizes that the LSA message received is a new message by comparing, and transmit the LSA message received to the SMB and other LCs except the LC of the transmitting party; a second processing unit adapted to transmit the LSA message in the LSDB to the LC of the transmitting party when the comparing unit recognizes that the LSA message received is an old message by comparing; a third processing unit adapted to return an ACK message to the LC of the transmitting party when the comparing unit recognizes that the LSA message received is the same message by comparing; and a virtual neighborhood creating unit adapted to create a virtual interface and establish the virtual neighborhood with the LC and the SMB via the virtual interface.
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Specification