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-rw-r--r--isisd/isis_adjacency.c3
-rw-r--r--isisd/isis_circuit.c5
-rw-r--r--isisd/isis_circuit.h1
3 files changed, 7 insertions, 2 deletions
diff --git a/isisd/isis_adjacency.c b/isisd/isis_adjacency.c
index 5b32a9e388..1b85299adf 100644
--- a/isisd/isis_adjacency.c
+++ b/isisd/isis_adjacency.c
@@ -328,7 +328,8 @@ void isis_adj_state_change(struct isis_adjacency **padj,
if (new_state == old_state)
return;
- if (old_state == ISIS_ADJ_UP) {
+ if (old_state == ISIS_ADJ_UP &&
+ !CHECK_FLAG(adj->circuit->flags, ISIS_CIRCUIT_IF_DOWN_FROM_Z)) {
if (IS_DEBUG_EVENTS)
zlog_debug(
"ISIS-Adj (%s): Starting fast-reroute on state change "
diff --git a/isisd/isis_circuit.c b/isisd/isis_circuit.c
index 6072d6bf74..4717f1b0e3 100644
--- a/isisd/isis_circuit.c
+++ b/isisd/isis_circuit.c
@@ -1631,8 +1631,10 @@ static int isis_ifp_up(struct interface *ifp)
{
struct isis_circuit *circuit = ifp->info;
- if (circuit)
+ if (circuit) {
+ UNSET_FLAG(circuit->flags, ISIS_CIRCUIT_IF_DOWN_FROM_Z);
isis_csm_state_change(IF_UP_FROM_Z, circuit, ifp);
+ }
return 0;
}
@@ -1643,6 +1645,7 @@ static int isis_ifp_down(struct interface *ifp)
struct isis_circuit *circuit = ifp->info;
if (circuit) {
+ SET_FLAG(circuit->flags, ISIS_CIRCUIT_IF_DOWN_FROM_Z);
for (afi = AFI_IP; afi <= AFI_IP6; afi++)
isis_circuit_switchover_routes(
circuit, afi == AFI_IP ? AF_INET : AF_INET6,
diff --git a/isisd/isis_circuit.h b/isisd/isis_circuit.h
index db8e2f752a..b3ad3f7ffe 100644
--- a/isisd/isis_circuit.h
+++ b/isisd/isis_circuit.h
@@ -142,6 +142,7 @@ struct isis_circuit {
struct list *ipv6_non_link; /* our non-link local IPv6 addresses */
uint16_t upadjcount[ISIS_LEVELS];
#define ISIS_CIRCUIT_FLAPPED_AFTER_SPF 0x01
+#define ISIS_CIRCUIT_IF_DOWN_FROM_Z 0x02
uint8_t flags;
bool disable_threeway_adj;
struct {