Page 139 of the DSE Networks & Infrastructure knowledge center, with source-backed guidance and practical next steps.
Guidance for resilient networks, Wi-Fi, firewalls, cabling, power, exposure reduction, and connected-device planning.
An ICMP Extended Echo Request MUST contain exactly one Interface Identification Object; with L set it may identify a local interface by name, index, or address, while L clear requires an address.
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A dual-stack client SHOULD issue AAAA first and A immediately afterward, treat resolution asynchronously, and avoid waiting for both address families before beginning connection establishment.
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An individual Master Key Tuple cannot change during a connection, but implementations may add or remove tuples and switch which installed tuple the connection uses.
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When an autoconfiguration prefix has no temporary address, a host should create one unless a prefix-specific policy says otherwise.
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Duplicate Address Detection must run before assigning each unicast address, including SLAAC, DHCPv6, and manually configured addresses, except for the specified disabled and anycast cases.
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OSPFv3 packets use the interface’s link-local IPv6 address on ordinary interfaces, while packets on a virtual link must use a global-scope source address. Link-local addresses may appear in link-LSAs but must not be advertised in inter-area-prefix, AS-external, NSSA, or intra-area-prefix LSAs.
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A differentiated-services domain’s boundary nodes classify and condition ingress traffic so its DS codepoints select supported per-hop behaviors.
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A valid Router Advertisement adds, refreshes, or immediately expires its source in the Default Router List according to the advertised Router Lifetime.
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During Exchange, adjacent OSPF routers describe their link-state databases; missing or newer LSAs populate the link-state request list. A router sends Link State Requests until the request list is empty, then a Loading adjacency advances to Full.
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Endpoint-independent UDP mapping reuses one external mapping for the same internal address and port across every external destination, and a NAT must provide that behavior.
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