=== LACP Aggregate w/ Degraded Link
==== Description
Verify communication over an LACP link aggregate when individual member
links stop forwarding traffic, without carrier loss.

.Logical network setup, link breakers (lb1 & lb2) here managed by host PC
ifdef::topdoc[]
image::{topdoc}../../test/case/ietf_interfaces/lag_failure/lag-failure.svg[]
endif::topdoc[]
ifndef::topdoc[]
ifdef::testgroup[]
image::lag_failure/lag-failure.svg[]
endif::testgroup[]
ifndef::testgroup[]
image::lag-failure.svg[]
endif::testgroup[]
endif::topdoc[]

The host verifies connectivity with dut2 via dut1 over the aggregate for
each failure mode step using the `mon` interface.

==== Topology
ifdef::topdoc[]
image::{topdoc}../../test/case/ietf_interfaces/lag_failure/topology.svg[LACP Aggregate w/ Degraded Link topology]
endif::topdoc[]
ifndef::topdoc[]
ifdef::testgroup[]
image::lag_failure/topology.svg[LACP Aggregate w/ Degraded Link topology]
endif::testgroup[]
ifndef::testgroup[]
image::topology.svg[LACP Aggregate w/ Degraded Link topology]
endif::testgroup[]
endif::topdoc[]
==== Test sequence
. Set up topology and attach to target DUTs
. Set up link aggregate, lag0, between dut1 and dut2
. Initial connectivity check ...
. Verify failure modes


<<<

