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A 2WAY neighbor can still participate in a healthy multiaccess OSPF design when DR/BDR adjacencies are FULL. Disabling routing would break legitimate reachability.

Administratively down interfaces cannot exchange the OSPF Hellos required to establish 2WAY. The observed state proves neighbor discovery occurred on the active interface.

An area mismatch typically prevents compatible OSPF Hello neighbor formation rather than yielding a stable normal 2WAY relationship. Check area settings if symptoms warrant, not automatically.

One switch could centralize a tiny office but creates scaling and fault-domain problems across multiple campus buildings. It lacks the planned separate distribution and core roles.

End hosts need access-layer port controls and aggregation, while a core should remain focused on fast reliable transport. Collapsing all access into the core conflicts with the stated modular growth.

Independent Internet exits do not provide the stated scalable campus hierarchy, consistent routing, or centralized policy across buildings.

Trunking can be appropriate for multivlan AP mappings, but it is unnecessary if the deployment supports one ordinary client VLAN and a matching access interface.

A trunk is needed when multiple tagged VLANs or specific controller designs traverse the connection, not simply because a radio exists. Unused VLANs expand complexity and exposure.

A routed port changes the attachment model and usually does not provide the expected bridged client VLAN. The branch AP must map client traffic to the intended Layer 2 segment.

Changing source preference does not establish a valid adjacency to 192.0.2.18; check next-hop reachability first.

Broadening the destination prefix changes which packets could match and risks misrouting unrelated traffic. It does not repair the missing connected path to the configured next hop.

A self-referential forwarding dependency cannot make the configured next hop reachable and may produce route recursion failure.

The normal initial DORA exchange includes discovery and an offer before a client requests a particular proposed configuration.

DHCPNAK rejects an invalid or unavailable requested lease and is not the normal final message of a successful allocation. The initial discover normally occurs before the client's selection request.

An ACK finalizes the selected lease and cannot ordinarily precede the discovery and selection stages. This reversed sequence does not describe a standard initial successful allocation.

Trust is an explicit administrative boundary and should not be granted just because a frame resembles a successful server response. Automatic trust defeats rogue-server defense.

Trusting an unapproved access interface permits the exact rogue offers DHCP snooping was meant to block.

A server reply arriving on an untrusted port can be dropped; trust should be limited to verified infrastructure interfaces.

TCP reliability belongs to endpoint transport stacks. A network controller does not ordinarily send application-layer acknowledgments on behalf of all communicating hosts.

Some special architectures tunnel selected flows, yet it is not generally necessary for a central policy controller to inspect and switch every ordinary endpoint packet.

Controller-based policy can direct switches, but ordinary data-plane packet forwarding stays on the network devices.

An Init neighbor state means a router has received Hello but has not yet observed reciprocal neighbor information. That is earlier than FULL and does not describe synchronized adjacency.

A disconnected link cannot sustain a FULL adjacency indefinitely because Hellos and neighbor keepalives cease. The current state records active control-plane communication.

Failed database exchange would typically leave a neighbor stuck in an earlier exchange state or reset. FULL indicates those required exchange steps completed successfully.

VLANs are distinct Layer 2 broadcast domains. Unknown-unicast flooding is contained within the ingress VLAN, not indiscriminately copied to unrelated VLANs.

Some protection features can suppress unknown-unicast flooding, but ordinary default switching behavior is to flood while learning. An unconditional drop would prevent unknown destinations from communicating.

A Layer 2 switch does not automatically rewrite every unknown destination to the IP default gateway. Hosts send to gateway MACs explicitly when routing is needed.

Even a healthy DHCP server cannot make an access port participate in a nonexistent Layer 2 VLAN on the switch.

The trunk’s permit list alone does not create an operational local VLAN for access ports and SVI participation.

Native VLAN affects untagged trunk behavior but does not satisfy the requirement for an existing active client VLAN.

ACL processing stops at the first match; permit any above the specific deny would shadow it.

Applying a source-only deny near the workstation would drop its traffic before any destination distinction is possible, exceeding the narrow requested access restriction.

A valid ACL rule cannot enforce a policy if it is not attached to the relevant path and direction.