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Account for added GRE and outer IP header overhead when sizing tunneled traffic is relevant to the different engineering topic "GRE MTU and encapsulation overhead", but it is not the most directly supported technical design or decision for this precise case: A tunnel carries pings one way but not return packets. the best answer here is: Test both overlay reachability and underlay encapsulated packet delivery during troubleshooting.

Match GRE tunnel source/destination endpoints to reachable transport addresses is relevant to the different engineering topic "GRE source and destination addressing", but it is not the most directly supported technical design or decision for this precise case: A tunnel carries pings one way but not return packets. the best answer here is: Test both overlay reachability and underlay encapsulated packet delivery during troubleshooting.

That option concerns BPDU protection for edge ports. A GRE interface can be configured yet fail to forward because routes, filters or endpoints are incorrect.

Verify IP protocol handling and security policy rather than changing only TCP port rules is relevant to the different engineering topic "GRE protocol and security limitations", but it is not the most directly supported implementation and troubleshooting step for this precise case: A tunnel carries pings one way but not return packets. the best answer here is: Review reverse underlay reachability and filter policy at both ends.

Clarify the need for separate encryption when confidentiality is required is relevant to the different engineering topic "GRE encapsulation purpose", but it is not the most directly supported implementation and troubleshooting step for this precise case: A tunnel carries pings one way but not return packets. the best answer here is: Review reverse underlay reachability and filter policy at both ends.

That option concerns Generated-route dependencies. A GRE interface can be configured yet fail to forward because routes, filters or endpoints are incorrect.

That option concerns LDP-IGP synchronization. A GRE interface can be configured yet fail to forward because routes, filters or endpoints are incorrect.

The underlay uses a valid physical or independently routed path is relevant to the different engineering topic "GRE underlay route recursion", but it is not the most directly supported operational verification evidence for this precise case: A tunnel carries pings one way but not return packets. the best answer here is: Bidirectional overlay packets are forwarded correctly.

The remote endpoint is reached through a valid source route is relevant to the different engineering topic "GRE source and destination addressing", but it is not the most directly supported operational verification evidence for this precise case: A tunnel carries pings one way but not return packets. the best answer here is: Bidirectional overlay packets are forwarded correctly.

Use graceful Routing Engine switchover where supported to preserve forwarding across a control-plane transition is relevant to the different engineering topic "GRES Routing Engine failover", but it is not the most directly supported technical design or decision for this precise case: A dual-homed access switch is connected with two links to one aggregation device. the best answer here is: Use LACP and correct aggregated Ethernet membership to form a resilient Junos LAG.

That option concerns IS-IS NET addressing. LACP negotiates compatible aggregation members; physical links being Up alone does not prove bundle participation.

Apply appropriate aggregated-Ethernet minimum-link conditions before declaring a degraded bundle operational is relevant to the different engineering topic "Aggregated-Ethernet minimum links", but it is not the most directly supported technical design or decision for this precise case: A dual-homed access switch is connected with two links to one aggregation device. the best answer here is: Use LACP and correct aggregated Ethernet membership to form a resilient Junos LAG.

Configure the common VRRP virtual address and appropriate priorities is relevant to the different engineering topic "VRRP virtual gateway failover", but it is not the most directly supported implementation and troubleshooting step for this precise case: A dual-homed access switch is connected with two links to one aggregation device. the best answer here is: Configure supported LACP modes and consistent ae membership.

That option concerns RSTP rapid transitions. LACP negotiates compatible aggregation members; physical links being Up alone does not prove bundle participation.

Configure the supported minimum-links threshold and monitor member state is relevant to the different engineering topic "Aggregated-Ethernet minimum links", but it is not the most directly supported implementation and troubleshooting step for this precise case: A dual-homed access switch is connected with two links to one aggregation device. the best answer here is: Configure supported LACP modes and consistent ae membership.

Hosts continue using the virtual gateway after the master fails is relevant to the different engineering topic "VRRP virtual gateway failover", but it is not the most directly supported operational verification evidence for this precise case: A dual-homed access switch is connected with two links to one aggregation device. the best answer here is: Both eligible member links appear active in show lacp interfaces.

Relevant protocol state persists across a controlled failover is relevant to the different engineering topic "Nonstop active routing NSR", but it is not the most directly supported operational verification evidence for this precise case: A dual-homed access switch is connected with two links to one aggregation device. the best answer here is: Both eligible member links appear active in show lacp interfaces.

That option concerns IPv6 static route next hop. LACP negotiates compatible aggregation members; physical links being Up alone does not prove bundle participation.

That option concerns Nonstop bridging during RE switchover. LACP negotiates compatible aggregation members; physical links being Up alone does not prove bundle participation.

Use protocol graceful restart only where neighbors support the necessary restart signaling and helper behavior is relevant to the different engineering topic "Graceful restart helper coordination", but it is not the most directly supported technical design or decision for this precise case: One LAG member stays detached after a partner replacement. the best answer here is: Use LACP and correct aggregated Ethernet membership to form a resilient Junos LAG.

That option concerns OSPF operational troubleshooting. LACP negotiates compatible aggregation members; physical links being Up alone does not prove bundle participation.

Inspect GRES synchronization and commit synchronization settings is relevant to the different engineering topic "GRES Routing Engine failover", but it is not the most directly supported implementation and troubleshooting step for this precise case: One LAG member stays detached after a partner replacement. the best answer here is: Check LACP partner system/key state and aggregation configuration.

That option concerns IPv6 neighbor discovery. LACP negotiates compatible aggregation members; physical links being Up alone does not prove bundle participation.

That option concerns BFD rapid failure detection. LACP negotiates compatible aggregation members; physical links being Up alone does not prove bundle participation.

The failure is attributed to unsupported or mismatched GR conditions is relevant to the different engineering topic "Graceful restart helper coordination", but it is not the most directly supported operational verification evidence for this precise case: One LAG member stays detached after a partner replacement. the best answer here is: The intended member becomes collecting/distributing after correction.

That option concerns GRE MTU and encapsulation overhead. LACP negotiates compatible aggregation members; physical links being Up alone does not prove bundle participation.

The HA plan reflects available redundant control-plane hardware is relevant to the different engineering topic "Nonstop active routing NSR", but it is not the most directly supported operational verification evidence for this precise case: One LAG member stays detached after a partner replacement. the best answer here is: The intended member becomes collecting/distributing after correction.

Use protocol graceful restart only where neighbors support the necessary restart signaling and helper behavior is relevant to the different engineering topic "Graceful restart helper coordination", but it is not the most directly supported technical design or decision for this precise case: A provider circuit requires at least two active 10G members to meet an SLA. the best answer here is: Apply appropriate aggregated-Ethernet minimum-link conditions before declaring a degraded bundle operational.

Use graceful Routing Engine switchover where supported to preserve forwarding across a control-plane transition is relevant to the different engineering topic "GRES Routing Engine failover", but it is not the most directly supported technical design or decision for this precise case: A provider circuit requires at least two active 10G members to meet an SLA. the best answer here is: Apply appropriate aggregated-Ethernet minimum-link conditions before declaring a degraded bundle operational.

That option concerns Static-route next-hop resolution. A minimum-links threshold can prevent operation when insufficient links remain, protecting capacity assumptions.

Configure supported LACP modes and consistent ae membership is relevant to the different engineering topic "LAG and LACP negotiation", but it is not the most directly supported implementation and troubleshooting step for this precise case: A provider circuit requires at least two active 10G members to meet an SLA. the best answer here is: Configure the supported minimum-links threshold and monitor member state.

Configure supported GRES and synchronized configuration behavior is relevant to the different engineering topic "GRES Routing Engine failover", but it is not the most directly supported implementation and troubleshooting step for this precise case: A provider circuit requires at least two active 10G members to meet an SLA. the best answer here is: Configure the supported minimum-links threshold and monitor member state.

That option concerns OSPF LSDB synchronization. A minimum-links threshold can prevent operation when insufficient links remain, protecting capacity assumptions.