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(S,G) state forwards only the desired source without RP discovery for SSM. This validates SSM without rendezvous point but does not directly demonstrate the required Multicast RPF shortest reverse path check result. Multicast RPF prevents loops by checking the expected route toward the source or RP.

The IGMP state records the intended source and excludes other senders. This validates IGMPv3 source include mode but does not directly demonstrate the required Multicast RPF shortest reverse path check result. Multicast RPF prevents loops by checking the expected route toward the source or RP.

Queue statistics show probabilistic early drops according to class and PLP settings. This validates RED WRED drop profile thresholds but does not directly demonstrate the required Multicast RPF shortest reverse path check result. Multicast RPF prevents loops by checking the expected route toward the source or RP.

No route-count guard can overwhelm route memory or control-plane processing. This is a BGP prefix-limit peer protection failure pattern, not the primary BGP TCP 179 and firewall reachability failure in this case. BGP relies on TCP transport and does not form merely because IP reachability exists.

Excessively small buffers cause avoidable drops while overlarge buffers increase delay. This is a Queue buffer-size allocation failure pattern, not the primary BGP TCP 179 and firewall reachability failure in this case. BGP relies on TCP transport and does not form merely because IP reachability exists.

Session Established does not guarantee the required route family was negotiated. This is a BGP NLRI IPv4 unicast inet family failure pattern, not the primary BGP TCP 179 and firewall reachability failure in this case. BGP relies on TCP transport and does not form merely because IP reachability exists.

Candidate routers acquire the intended RP mappings for authorized multicast ranges. This validates PIM RP discovery and bootstrap mapping but does not directly demonstrate the required BGP NLRI IPv4 unicast inet family result. BGP address families determine which NLRI types may be exchanged.

Tagged prefixes follow documented export or preference behavior at the target neighbor. This validates BGP communities tagging routing intent but does not directly demonstrate the required BGP NLRI IPv4 unicast inet family result. BGP address families determine which NLRI types may be exchanged.

Peering establishes over the authorized endpoints without opening unrelated management ports. This validates BGP TCP 179 and firewall reachability but does not directly demonstrate the required BGP NLRI IPv4 unicast inet family result. BGP address families determine which NLRI types may be exchanged.

Excessively small buffers cause avoidable drops while overlarge buffers increase delay. This is a Queue buffer-size allocation failure pattern, not the primary IEEE 802.1p CoS rewrite on Ethernet failure in this case. 802.1p PCP bits are distinct from IP DSCP and may require explicit mapping.

Treating every packet as identical PLP may defeat differentiated congestion policy. This is a Packet loss priority PLP marking failure pattern, not the primary IEEE 802.1p CoS rewrite on Ethernet failure in this case. 802.1p PCP bits are distinct from IP DSCP and may require explicit mapping.

Damping critical destinations without review can prolong customer downtime. This is a BGP route damping flap penalty failure pattern, not the primary IEEE 802.1p CoS rewrite on Ethernet failure in this case. 802.1p PCP bits are distinct from IP DSCP and may require explicit mapping.

Registered printers receive limited required access while unknown MACs are rejected. This validates MAC RADIUS printer onboarding but does not directly demonstrate the required 802.1X supplicant authenticator RADIUS roles result. 802.1X separates supplicant authenticator and authentication server roles.

IPv4 routes appear in inet.0 with eligible BGP paths. This validates BGP NLRI IPv4 unicast inet family but does not directly demonstrate the required 802.1X supplicant authenticator RADIUS roles result. 802.1X separates supplicant authenticator and authentication server roles.

Spoofed MAC identity cannot grant administrator or high-trust employee access. This validates MAC RADIUS spoofing limitations but does not directly demonstrate the required 802.1X supplicant authenticator RADIUS roles result. 802.1X separates supplicant authenticator and authentication server roles.

Compare received extended communities and imported EVPN instance routes. That check applies chiefly to EVPN route target import export scope, not the current VXLAN VTEP loopback underlay route issue. VXLAN data plane depends on routable VTEP endpoints independent of EVPN MAC learning.

Add a VLAN description matching remote VTEP address and claim underlay routing is fixed. That bypass leaves the VXLAN VTEP loopback underlay route issue unresolved. An EVPN Type2 route with unreachable tunnel next hop cannot deliver traffic.

Inspect EVPN Type3 routes and flood lists for the affected VNI. That check applies chiefly to EVPN Type3 IMET inclusive multicast routes, not the current VXLAN VTEP loopback underlay route issue. VXLAN data plane depends on routable VTEP endpoints independent of EVPN MAC learning.

Configure reachable appropriate RP mapping for the required ASM group range. This addresses PIM sparse-mode RP shared tree rather than the required Multicast RPF shortest reverse path check decision. Multicast RPF prevents loops by checking the expected route toward the source or RP.

Select appropriate IPv6 multicast addressing and scope behavior for intended receivers. This addresses IPv6 multicast scope and group use rather than the required Multicast RPF shortest reverse path check decision. Multicast RPF prevents loops by checking the expected route toward the source or RP.

Install a route toward the multicast group instead of source and expect RPF to pass automatically. This is a risky or ineffective shortcut for Multicast RPF shortest reverse path check. A valid group membership cannot compensate for a failed RPF incoming-interface check.

BGP OPEN exchange checks autonomous-system identity and capability compatibility. That principle is related to BGP eBGP peer AS and local identity, not the main BGP LOCAL_PREF outbound exit selection choice. Treating MED as a replacement for internal LOCAL_PREF can select the wrong exit.

Server timeout and explicit credential rejection should use different fallback decisions. That principle is related to RADIUS server unreachable fallback policy, not the main BGP LOCAL_PREF outbound exit selection choice. Treating MED as a replacement for internal LOCAL_PREF can select the wrong exit.

AS_PATH prepending may influence remote inbound selection but is not guaranteed to override peer policy. That principle is related to BGP AS path prepend outbound advertisement, not the main BGP LOCAL_PREF outbound exit selection choice. Treating MED as a replacement for internal LOCAL_PREF can select the wrong exit.

Add an IPv6-only family and claim it directly installs IPv4 destinations. This would not be an appropriate BGP NLRI IPv4 unicast inet family decision. Session Established does not guarantee the required route family was negotiated.

Enable compatible BGP multipath and forwarding-table load balancing where justified. This belongs to BGP multipath equal-cost path installation, not the specified BGP NLRI IPv4 unicast inet family operation. BGP address families determine which NLRI types may be exchanged.

Set a policy-based higher local preference for preferred internal BGP paths. This belongs to BGP LOCAL_PREF outbound exit selection, not the specified BGP NLRI IPv4 unicast inet family operation. BGP address families determine which NLRI types may be exchanged.

Flapping prefixes are damped according to intended thresholds and recover within acceptable time. This validates BGP route damping flap penalty but does not directly demonstrate the required iBGP next-hop-self on edge result. iBGP may preserve external next-hop attributes unless policy changes them.

Under controlled load intended voice QoS remains protected while other classes retain service. This validates CoS end-to-end verification of drop behavior but does not directly demonstrate the required iBGP next-hop-self on edge result. iBGP may preserve external next-hop attributes unless policy changes them.

BGP reaches Established with the expected local and remote ASN and prefix families. This validates BGP eBGP peer AS and local identity but does not directly demonstrate the required iBGP next-hop-self on edge result. iBGP may preserve external next-hop attributes unless policy changes them.

Label the production VLAN Guest and assume access becomes restricted automatically. This is a risky or ineffective shortcut for Guest VLAN for unauthenticated clients. An overly permissive guest VLAN becomes an alternative corporate-network entry.

Configure appropriate supplicant EAP trust and supported RADIUS certificate or credential policy. This addresses 802.1X EAP authentication credential validation rather than the required Guest VLAN for unauthenticated clients decision. Guest VLAN authorizes limited access for eligible unauthenticated clients.

Configure supported captive portal redirect and identity or terms policy for guest VLANs. This addresses Captive portal web authentication rather than the required Guest VLAN for unauthenticated clients decision. Guest VLAN authorizes limited access for eligible unauthenticated clients.