Exam Bundle

That observation verifies acl counter troubleshooting in a different situation, such as when a new permit rule is blamed for a dropped service even though its hit counter never increases. For the reported acl applied wrong direction incident at a service provider support center in Paris, the required acceptance evidence is: Matched ingress packets are denied before routing while approved packets continue. This other result does not test that condition directly.

That observation verifies urpf loose reachability in a different situation, such as when loose uRPF is installed on an edge and administrators assume it verifies incoming interface symmetry. For the reported acl applied wrong direction incident at a service provider support center in Paris, the required acceptance evidence is: Matched ingress packets are denied before routing while approved packets continue. This other result does not test that condition directly.

That observation verifies urpf strict asymmetric routes in a different situation, such as when legitimate multihomed source traffic is dropped by strict uRPF because the best reverse path uses another interface. For the reported acl applied wrong direction incident at a service provider support center in Paris, the required acceptance evidence is: Matched ingress packets are denied before routing while approved packets continue. This other result does not test that condition directly.

That approach is relevant to phase 2 next-hop-self, such as when in phase 2 DMVPN, hub EIGRP changes the next hop to its own tunnel IP, preventing a direct spoke shortcut. That is a different root cause from the dmvpn nhs omission fault observed at an MPLS service provider in Paris. Applying that approach alone would not establish the required result: NHRP registration succeeds and hub-side spoke mappings appear.

That approach is relevant to dmvpn peer-state cli, such as when tunnel interfaces show up/up but the team has not checked whether NHRP peers are registered and active. That is a different root cause from the dmvpn nhs omission fault observed at an MPLS service provider in Paris. Applying that approach alone would not establish the required result: NHRP registration succeeds and hub-side spoke mappings appear.

That approach is relevant to spoke nhrp registration age, such as when a hub stops forwarding for one spoke because its NHRP registration repeatedly expires. That is a different root cause from the dmvpn nhs omission fault observed at an MPLS service provider in Paris. Applying that approach alone would not establish the required result: NHRP registration succeeds and hub-side spoke mappings appear.

That observation verifies static hub mapping at spoke in a different situation, such as when a spoke cannot send initial NHRP requests because it has no mapping from the hub's tunnel address to the reachable NBMA address. For the reported dmvpn nhs omission incident at an MPLS service provider in Paris, the required acceptance evidence is: NHRP registration succeeds and hub-side spoke mappings appear. This other result does not test that condition directly.

That observation verifies spoke nhrp registration age in a different situation, such as when a hub stops forwarding for one spoke because its NHRP registration repeatedly expires. For the reported dmvpn nhs omission incident at an MPLS service provider in Paris, the required acceptance evidence is: NHRP registration succeeds and hub-side spoke mappings appear. This other result does not test that condition directly.

That observation verifies dmvpn peer-state cli in a different situation, such as when tunnel interfaces show up/up but the team has not checked whether NHRP peers are registered and active. For the reported dmvpn nhs omission incident at an MPLS service provider in Paris, the required acceptance evidence is: NHRP registration succeeds and hub-side spoke mappings appear. This other result does not test that condition directly.

That approach is relevant to eigrp ipv6 address family, such as when iPv4 EIGRP is healthy but IPv6 routes are absent because the appropriate IPv6 routing address family was never activated. That is a different root cause from the eigrp variance unequal cost fault observed at a distribution company in Oslo. Applying that approach alone would not establish the required result: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop.

That approach is relevant to eigrp stub leaf, such as when a remote branch does not transit traffic yet its router receives network-wide EIGRP query requests for unrelated destinations. That is a different root cause from the eigrp variance unequal cost fault observed at a distribution company in Oslo. Applying that approach alone would not establish the required result: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop.

That approach is relevant to feasibility condition, such as when the topology table shows an alternate route whose reported distance exceeds the successor feasible distance, but an engineer calls it a guaranteed feasible successor. That is a different root cause from the eigrp variance unequal cost fault observed at a distribution company in Oslo. Applying that approach alone would not establish the required result: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop.

That observation verifies eigrp named mode af-interface in a different situation, such as when a named EIGRP configuration has the correct AS but an interface is not participating in its address family. For the reported eigrp variance unequal cost incident at a distribution company in Oslo, the required acceptance evidence is: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop. This other result does not test that condition directly.

That observation verifies eigrp ipv6 address family in a different situation, such as when iPv4 EIGRP is healthy but IPv6 routes are absent because the appropriate IPv6 routing address family was never activated. For the reported eigrp variance unequal cost incident at a distribution company in Oslo, the required acceptance evidence is: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop. This other result does not test that condition directly.

That observation verifies eigrp k-value disagreement in a different situation, such as when eIGRP hello packets arrive but routers refuse adjacency because composite-metric K values do not agree. For the reported eigrp variance unequal cost incident at a distribution company in Oslo, the required acceptance evidence is: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop. This other result does not test that condition directly.

That approach is relevant to snmp polling versus traps, such as when an engineer expects router traps to appear merely because polling UDP 161 is permitted, while outbound notification transport is blocked. That is a different root cause from the snmp mib view restricted fault observed at a city service network in Singapore. Applying that approach alone would not establish the required result: The allowed interface OIDs return data and unrelated restricted OIDs remain inaccessible.

That approach is relevant to snmpv2c community mismatch, such as when an NMS times out polling an SNMPv2c device after the configured community string was changed. That is a different root cause from the snmp mib view restricted fault observed at a city service network in Singapore. Applying that approach alone would not establish the required result: The allowed interface OIDs return data and unrelated restricted OIDs remain inaccessible.

That approach is relevant to snmp counters versus interface state, such as when an NMS marks all interfaces healthy because it polls only administrative status and ignores operational state counters. That is a different root cause from the snmp mib view restricted fault observed at a city service network in Singapore. Applying that approach alone would not establish the required result: The allowed interface OIDs return data and unrelated restricted OIDs remain inaccessible.

That observation verifies snmpv3 engine id mismatch in a different situation, such as when sNMPv3 credentials stop working after a device engine ID changes while old localized keys remain. For the reported snmp mib view restricted incident at a city service network in Singapore, the required acceptance evidence is: The allowed interface OIDs return data and unrelated restricted OIDs remain inaccessible. This other result does not test that condition directly.

That observation verifies snmpv2c community mismatch in a different situation, such as when an NMS times out polling an SNMPv2c device after the configured community string was changed. For the reported snmp mib view restricted incident at a city service network in Singapore, the required acceptance evidence is: The allowed interface OIDs return data and unrelated restricted OIDs remain inaccessible. This other result does not test that condition directly.

That observation verifies snmp community privilege scope in a different situation, such as when a polling-only monitoring system receives excessive SNMP write capability from a read-write community. For the reported snmp mib view restricted incident at a city service network in Singapore, the required acceptance evidence is: The allowed interface OIDs return data and unrelated restricted OIDs remain inaccessible. This other result does not test that condition directly.

That approach is relevant to dmvpn nhs omission, such as when a spoke tunnel comes up but never registers with the hub because no Next Hop Server target is configured. That is a different root cause from the dmvpn nhrp network id mismatch fault observed at an energy services network in Calgary. Applying that approach alone would not establish the required result: The hub and spoke complete NHRP registration in the expected cloud.

That approach is relevant to ipsec ike proposal mismatch, such as when dMVPN NHRP can see underlay reachability but the IPsec negotiation fails because IKE policies have no compatible proposal. That is a different root cause from the dmvpn nhrp network id mismatch fault observed at an energy services network in Calgary. Applying that approach alone would not establish the required result: The hub and spoke complete NHRP registration in the expected cloud.

That approach is relevant to dmvpn mgre hub, such as when a single-hub DMVPN must support many dynamically registered spokes, but the hub tunnel is configured as a fixed point-to-point GRE tunnel. That is a different root cause from the dmvpn nhrp network id mismatch fault observed at an energy services network in Calgary. Applying that approach alone would not establish the required result: The hub and spoke complete NHRP registration in the expected cloud.

That observation verifies spoke multicast static mapping in a different situation, such as when a DMVPN spoke reaches the hub by unicast but its multicast routing hellos never reach the hub tunnel. For the reported dmvpn nhrp network id mismatch incident at an energy services network in Calgary, the required acceptance evidence is: The hub and spoke complete NHRP registration in the expected cloud. This other result does not test that condition directly.

That observation verifies nhrp authentication mismatch in a different situation, such as when a new DMVPN spoke sees the hub but its NHRP registration is rejected after inconsistent NHRP authentication was applied. For the reported dmvpn nhrp network id mismatch incident at an energy services network in Calgary, the required acceptance evidence is: The hub and spoke complete NHRP registration in the expected cloud. This other result does not test that condition directly.

That observation verifies static hub mapping at spoke in a different situation, such as when a spoke cannot send initial NHRP requests because it has no mapping from the hub's tunnel address to the reachable NBMA address. For the reported dmvpn nhrp network id mismatch incident at an energy services network in Calgary, the required acceptance evidence is: The hub and spoke complete NHRP registration in the expected cloud. This other result does not test that condition directly.

That approach is relevant to eigrp stub leaf, such as when a remote branch does not transit traffic yet its router receives network-wide EIGRP query requests for unrelated destinations. That is a different root cause from the eigrp variance unequal cost fault observed at a bank network operations team in London. Applying that approach alone would not establish the required result: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop.

That approach is relevant to eigrp ipv6 address family, such as when iPv4 EIGRP is healthy but IPv6 routes are absent because the appropriate IPv6 routing address family was never activated. That is a different root cause from the eigrp variance unequal cost fault observed at a bank network operations team in London. Applying that approach alone would not establish the required result: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop.

That approach is relevant to feasibility condition, such as when the topology table shows an alternate route whose reported distance exceeds the successor feasible distance, but an engineer calls it a guaranteed feasible successor. That is a different root cause from the eigrp variance unequal cost fault observed at a bank network operations team in London. Applying that approach alone would not establish the required result: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop.

That observation verifies eigrp named mode af-interface in a different situation, such as when a named EIGRP configuration has the correct AS but an interface is not participating in its address family. For the reported eigrp variance unequal cost incident at a bank network operations team in London, the required acceptance evidence is: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop. This other result does not test that condition directly.

That observation verifies eigrp k-value disagreement in a different situation, such as when eIGRP hello packets arrive but routers refuse adjacency because composite-metric K values do not agree. For the reported eigrp variance unequal cost incident at a bank network operations team in London, the required acceptance evidence is: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop. This other result does not test that condition directly.

That observation verifies eigrp ipv6 address family in a different situation, such as when iPv4 EIGRP is healthy but IPv6 routes are absent because the appropriate IPv6 routing address family was never activated. For the reported eigrp variance unequal cost incident at a bank network operations team in London, the required acceptance evidence is: Multiple eligible unequal-cost routes appear in the routing table without admitting an unsafe loop. This other result does not test that condition directly.