Hi,
ospfd sends LSAs with MAX_METRIC for carp interfaces in state backup.
This does the same for ospf6d.
While here also document how ospf6d treats carp interfaces.
OK?
Remi
Index: ospf6d.conf.5
===================================================================
RCS file: /cvs/src/usr.sbin/ospf6d/ospf6d.conf.5,v
retrieving revision 1.12
diff -u -p -r1.12 ospf6d.conf.5
--- ospf6d.conf.5 14 Feb 2016 20:05:55 -0000 1.12
+++ ospf6d.conf.5 17 Apr 2018 21:01:55 -0000
@@ -273,9 +273,15 @@ The default value is 10; valid range is
.It Ic metric Ar cost
Set the interface metric a.k.a. cost.
The default value is 10; valid range is 1\-65535.
+A metric of 65535 is used for
+.Xr carp 4
+interfaces with status backup.
.It Ic passive
Prevent transmission and reception of OSPF packets on this interface.
The specified interface will be announced as a stub network.
+Passive mode is enforced for
+.Xr carp 4
+interfaces.
.It Ic retransmit-interval Ar seconds
Set retransmit interval.
The default value is 5 seconds; valid range is 5\-3600 seconds.
Index: rde.c
===================================================================
RCS file: /cvs/src/usr.sbin/ospf6d/rde.c,v
retrieving revision 1.74
diff -u -p -r1.74 rde.c
--- rde.c 10 Jun 2018 14:39:38 -0000 1.74
+++ rde.c 11 Jun 2018 14:09:06 -0000
@@ -1479,9 +1482,18 @@ orig_intra_lsa_rtr(struct area *area, st
numprefix = 0;
LIST_FOREACH(iface, &area->iface_list, entry) {
if (!((iface->flags & IFF_UP) &&
- LINK_STATE_IS_UP(iface->linkstate)))
- /* interface or link state down */
+ LINK_STATE_IS_UP(iface->linkstate)) &&
+ !(iface->if_type == IFT_CARP))
+ /* interface or link state down
+ * and not a carp interface */
+ continue;
+
+ if (iface->if_type == IFT_CARP &&
+ (iface->linkstate == LINK_STATE_UNKNOWN ||
+ iface->linkstate == LINK_STATE_INVALID))
+ /* carp interface in state invalid or unknown */
continue;
+
if ((iface->state & IF_STA_DOWN) &&
!(iface->cflags & F_IFACE_PASSIVE))
/* passive interfaces stay in state DOWN */
@@ -1517,6 +1529,13 @@ orig_intra_lsa_rtr(struct area *area, st
iface->state & IF_STA_LOOPBACK) {
lsa_prefix->prefixlen = 128;
lsa_prefix->metric = 0;
+ } else if (iface->if_type == IFT_CARP &&
+ iface->linkstate == LINK_STATE_DOWN) {
+ /* carp interfaces in state backup are
+ * announced with high metric for faster
+ * failover. */
+ lsa_prefix->prefixlen = ia->prefixlen;
+ lsa_prefix->metric = MAX_METRIC;
} else {
lsa_prefix->prefixlen = ia->prefixlen;
lsa_prefix->metric = htons(iface->metric);
@@ -1526,9 +1545,9 @@ orig_intra_lsa_rtr(struct area *area, st
lsa_prefix->options |= OSPF_PREFIX_LA;
log_debug("orig_intra_lsa_rtr: area %s, interface %s: "
- "%s/%d", inet_ntoa(area->id),
+ "%s/%d, metric %d", inet_ntoa(area->id),
iface->name, log_in6addr(&ia->addr),
- lsa_prefix->prefixlen);
+ lsa_prefix->prefixlen, ntohs(lsa_prefix->metric));
prefix = (struct in6_addr *)(lsa_prefix + 1);
inet6applymask(prefix, &ia->addr,
