diff --git a/ldpd/lde_lib.c b/ldpd/lde_lib.c index db2682a173..b074bf3498 100644 --- a/ldpd/lde_lib.c +++ b/ldpd/lde_lib.c @@ -383,20 +383,23 @@ lde_kernel_update(struct fec *fec) if (LIST_EMPTY(&fn->nexthops)) { RB_FOREACH(ln, nbr_tree, &lde_nbrs) lde_send_labelwithdraw(ln, fn, NULL, NULL); - fn->local_label = NO_LABEL; fn->data = NULL; + + /* + * Do not deallocate the local label now, do that only in the + * LIB garbage collector. This will prevent ldpd from changing + * the input label of some prefixes too often when running on + * an unstable network. Also, restart the garbage collector + * timer so that labels are deallocated only when the network + * is stabilized. + */ + lde_gc_start_timer(); } else { - uint32_t previous_label; - - previous_label = fn->local_label; fn->local_label = lde_update_label(fn); - - if (fn->local_label != NO_LABEL && - fn->local_label != previous_label) { + if (fn->local_label != NO_LABEL && RB_EMPTY(&fn->upstream)) /* FEC.1: perform lsr label distribution procedure */ RB_FOREACH(ln, nbr_tree, &lde_nbrs) lde_send_labelmapping(ln, fn, 1); - } } LIST_FOREACH(fnh, &fn->nexthops, entry) {