多选题What information does a router running a link-state protocol use to build and maintain its topological database?（）Ahello packetsBSAP messages sent by other routersCLSAs from other routersDbeacons received on point-to-point linksErouting tables received from other link-state routersFTTL packets from designated routers
多选题
What information does a router running a link-state protocol use to build and maintain its topological database?（）
A
hello packets
B
SAP messages sent by other routers
C
LSAs from other routers
D
beacons received on point-to-point links
E
routing tables received from other link-state routers
F
TTL packets from designated routers
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