PrivateLink exposes service endpoints using consumer VPC addresses without demanding broad routability between overlapping VPC CIDR ranges; that addresses private application access without overlapping-CIDR routing, rather than private service consumption across identical addressing realms.

Gateway endpoints provide private S3 routes within a VPC using an endpoint target rather than NAT and per-hour interface endpoint ENIs; this belongs to route-table-based S3 private service access, while the problem is private service consumption across identical addressing realms.

In the application-specific private access across account boundaries workflow, an interface endpoint places consumer-owned ENIs in selected subnets and connects only to the published service; the current case needs private service consumption across identical addressing realms.

This produces governed membership for a multi-account hub: Resource sharing and attachment approval bound which accounts can join centralized connectivity; routing decisions still belong to network policy; the stem instead tests private service consumption across identical addressing realms.

Host MTU settings cannot raise the supported MTU of an existing Direct Connect virtual interface. Every participating hop must support the intended frame size, including the VIF and network equipment.

Changing a VIF to public addressing is not the mechanism for enabling jumbo frames. The Direct Connect MTU configuration and end-to-end frame support are the applicable controls.

BGP hold timers affect control-plane liveness; they do not set Ethernet frame limits. Larger payload delivery depends on MTU configuration and compatible routers and interfaces.

Layer-one connection state does not guarantee a valid VLAN or BGP session; VIF-level configuration determines routing adjacency; that addresses distinction between circuit health and routing session health, rather than BGP neighbor ASN agreement.

An established IPsec security association does not by itself exchange dynamic networks; BGP must originate acceptable prefixes across the tunnel; this changes propagation of corporate networks using VPN BGP, not the necessary BGP neighbor ASN agreement.

In the correct VLAN tagging for a Direct Connect virtual interface workflow, direct Connect VIFs identify their layer-two sessions by VLAN tag; untagged frames do not enter the expected BGP peer context; the current case needs BGP neighbor ASN agreement.

Static VPN routing requires configured destination prefixes; no BGP advertisements populate the list automatically; this belongs to configured prefixes for a statically routed VPN, while the problem is propagation of corporate networks using VPN BGP.

VPN resilience depends on reachability of both independently addressed AWS tunnel endpoints, not merely having two configured AWS tunnels; this changes perimeter firewall support for both VPN tunnels, not the necessary propagation of corporate networks using VPN BGP.

In the dual-tunnel BGP monitoring and failover workflow, independent tunnel peerings expose route availability to BGP so routing can respond when one encrypted path fails; the current case needs propagation of corporate networks using VPN BGP.

Without VPN route propagation or equivalent static routes, spoke traffic has no transit next hop toward dynamically learned branch prefixes; this belongs to attachment-specific route propagation to spoke forwarding tables, while the problem is VPC-side routing for corporate destination prefixes.

TGW prefixes on the hybrid side do not automatically populate VPC subnet route tables; the instance-side forwarding path must also exist; this changes VPC forwarding toward known corporate networks, not the necessary VPC-side routing for corporate destination prefixes.

In the filtering real VGW VPC prefixes rather than inventing subnets workflow, with VGW associations, allowed prefixes filter actual VPC CIDR advertisements and cannot force a new more-specific network that the VGW does not advertise; the current case needs VPC-side routing for corporate destination prefixes.

Tunnel-state metrics expose endpoint availability; route-specific checks distinguish an encrypted tunnel from viable routed destinations; that addresses proactive visibility into hybrid tunnel outages, rather than deliberate active-passive VPN path selection.

The customer router determines its outbound path using its routing policy, so a redundant connection alone cannot enforce primary preference; this belongs to customer-side outbound route selection between hybrid links, while the problem is deliberate active-passive VPN path selection.

In the dual-tunnel BGP monitoring and failover workflow, independent tunnel peerings expose route availability to BGP so routing can respond when one encrypted path fails; the current case needs deliberate active-passive VPN path selection.

This produces propagation of corporate networks using VPN BGP: An established IPsec security association does not by itself exchange dynamic networks; BGP must originate acceptable prefixes across the tunnel; the stem instead tests deliberate active-passive VPN path selection.

The transit VIF architecture reaches transit gateways through a Direct Connect gateway; VGW connectivity uses a private VIF pattern; that addresses correct gateway attachment for transit virtual interfaces, rather than controlled BGP advertisement via DX gateway allowed prefixes.

With VGW associations, allowed prefixes filter actual VPC CIDR advertisements and cannot force a new more-specific network that the VGW does not advertise; this changes filtering real VGW VPC prefixes rather than inventing subnets, not the necessary controlled BGP advertisement via DX gateway allowed prefixes.

In the ownership-aware DX gateway association approval workflow, the gateway association uses an explicit proposal and acceptance workflow across accounts to authorize the connectivity relationship; the current case needs controlled BGP advertisement via DX gateway allowed prefixes.

Public VIFs expose AWS public address reachability; private VPC CIDRs use the VIF type and gateway designed for private connectivity; this belongs to dedicated routing plane for private VPC prefixes, while the problem is filtering real VGW VPC prefixes rather than inventing subnets.

Transit Gateway associations originate explicitly allowed prefixes toward Direct Connect BGP peers; missing allowed prefixes can leave no AWS route advertisements; this changes controlled BGP advertisement via DX gateway allowed prefixes, not the necessary filtering real VGW VPC prefixes rather than inventing subnets.

In the correct gateway attachment for transit virtual interfaces workflow, the transit VIF architecture reaches transit gateways through a Direct Connect gateway; VGW connectivity uses a private VIF pattern; the current case needs filtering real VGW VPC prefixes rather than inventing subnets.

Layer-one connection state does not guarantee a valid VLAN or BGP session; VIF-level configuration determines routing adjacency; that addresses distinction between circuit health and routing session health, rather than account acceptance of a provider-provisioned hosted circuit.

Direct Connect VIFs identify their layer-two sessions by VLAN tag; untagged frames do not enter the expected BGP peer context; this belongs to correct VLAN tagging for a Direct Connect virtual interface, while the problem is account acceptance of a provider-provisioned hosted circuit.

In the carrier handoff documentation for a physical DX circuit workflow, the LOA-CFA gives the facility details and authorization necessary for the carrier's physical cross-connect; the current case needs account acceptance of a provider-provisioned hosted circuit.

With VGW associations, allowed prefixes filter actual VPC CIDR advertisements and cannot force a new more-specific network that the VGW does not advertise; that addresses filtering real VGW VPC prefixes rather than inventing subnets, rather than dedicated routing plane for private VPC prefixes.

The private VPN tunnel rides the private Direct Connect connectivity toward the transit gateway rather than attaching directly to a public VIF; this changes underlying private transport for encrypted TGW connectivity, not the necessary dedicated routing plane for private VPC prefixes.

In the correct gateway attachment for transit virtual interfaces workflow, the transit VIF architecture reaches transit gateways through a Direct Connect gateway; VGW connectivity uses a private VIF pattern; the current case needs dedicated routing plane for private VPC prefixes.

NAT traversal encapsulates ESP-protected traffic in UDP 4500 so a translating intermediate router can handle the session; that addresses IPsec connectivity across translating perimeter devices, rather than functional MTU negotiation through IPsec overhead.

AWS sends IKE negotiation to the configured customer endpoint, so an unreachable or incorrect outside address prevents establishment; this belongs to accurate public termination identity for a hybrid VPN, while the problem is functional MTU negotiation through IPsec overhead.

In the compatible IKE negotiation parameters workflow, phase-one negotiation requires both peers to agree on IKE and cryptographic parameters before protected traffic can traverse the tunnel; the current case needs functional MTU negotiation through IPsec overhead.