In OSPF broadcast or NBMA network types, devices with a large ROUTER PRIORITY may not necessarily become DR.

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On the broadcast or nbma network, not all neighbors will establish adjacency.

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The OSPF vlink-peer command is used to configure a virtual connection, which specifies the router-id of the peer.

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The matching order of the access control list is divided into two types: configuration order and automatic sorting.

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When the Hold Time supported by two BGP neighbors are inconsistent, the neighbors will negotiate to adopt the lowest Hold Time interval that both ends can support.

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In the OSPF routing protocol, under the same other conditions, the Type 2 of external route always takes precedence over the Type 1 of external route.

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In the OSPF protocol, it is not possible to judge the newness of the same LSA based on LS SEQUENCE NUMBER and LS AGE alone.

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When different routing protocols are used in unused networks, and these networks need to share routing information, you can set up route import. In BGP, routes can only be imported through the network.

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In the BGP routing rules, the route with the higher LOCAL_PREF value takes precedence.

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In the routing rules of BGP, the priority of the manually aggregated route generated by the AGGREGATE command is higher than the automatically aggregated route generated by the SUMMARY AUTOMATIC command.

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