diff options
| -rw-r--r-- | ospfd/ospf_packet.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/ospfd/ospf_packet.c b/ospfd/ospf_packet.c index 9930b0bd49..db33451390 100644 --- a/ospfd/ospf_packet.c +++ b/ospfd/ospf_packet.c @@ -1081,6 +1081,25 @@ static void ospf_hello(struct ip *iph, struct ospf_header *ospfh, return; } + if (OSPF_GR_IS_ACTIVE_HELPER(nbr)) { + /* As per the GR Conformance Test Case 7.2. Section 3 + * "Also, if X was the Designated Router on network segment S + * when the helping relationship began, Y maintains X as the + * Designated Router until the helping relationship is + * terminated." + * When I am helper for this neighbor, I should not trigger the + * ISM Events. Also Intentionally not setting the priority and + * other fields so that when the neighbor exits the Grace + * period, it can handle if there is any change before GR and + * after GR. */ + if (IS_DEBUG_OSPF_GR) + zlog_debug( + "%s, Neighbor is under GR Restart, hence ignoring the ISM Events", + __PRETTY_FUNCTION__); + + return; + } + /* If neighbor itself declares DR and no BDR exists, cause event BackupSeen */ if (IPV4_ADDR_SAME(&nbr->address.u.prefix4, &hello->d_router)) |