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BGP: Use implicit-NULL label when announcing MPLS routes with local next-hop

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We currently cannot assing local labels, but we can still be LSP egress
router. Therefore when we announce labeled route with local next-hop, we
should announce implicit-NULL label instead of rejecting it completely.
This commit is contained in:
Ondrej Zajicek (work) 2018-07-01 01:03:16 +02:00
parent 93c1defdb0
commit 8e86ffce82
1 changed files with 4 additions and 1 deletions
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5
proto/bgp/packets.c
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@ -875,7 +875,10 @@ bgp_update_next_hop_ip(struct bgp_export_state *s, eattr *a, ea_list **to)
/* TODO: Use local MPLS assigned label */ /* TODO: Use local MPLS assigned label */
if (s->mpls) if (s->mpls)
bgp_unset_attr(to, s->pool, BA_MPLS_LABEL_STACK); {
u32 implicit_null = BGP_MPLS_NULL;
bgp_set_attr_data(to, s->pool, BA_MPLS_LABEL_STACK, 0, &implicit_null, 4);
}
} }
} }