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-rw-r--r--proto/bgp/attrs.c2
-rw-r--r--proto/bgp/bgp.h1
-rw-r--r--proto/bgp/config.Y1
3 files changed, 3 insertions, 1 deletions
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 039fdff5..8bff4c78 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -2154,7 +2154,7 @@ bgp_update_attrs(struct bgp_proto *p, struct bgp_channel *c, rte *e, ea_list *at
/* MULTI_EXIT_DESC attribute - accept only if set in export filter */
a = bgp_find_attr(attrs0, BA_MULTI_EXIT_DISC);
- if (a && !(a->fresh))
+ if (a && !a->fresh && !p->cf->allow_med)
bgp_unset_attr(&attrs, BA_MULTI_EXIT_DISC);
}
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index c98582dd..6f75874f 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -108,6 +108,7 @@ struct bgp_config {
int interpret_communities; /* Hardwired handling of well-known communities */
int allow_local_as; /* Allow that number of local ASNs in incoming AS_PATHs */
int allow_local_pref; /* Allow LOCAL_PREF in EBGP sessions */
+ int allow_med; /* Allow BGP_MED in EBGP sessions */
int allow_as_sets; /* Allow AS_SETs in incoming AS_PATHs */
int enforce_first_as; /* Enable check for neighbor AS as first AS in AS_PATH */
int gr_mode; /* Graceful restart mode (BGP_GR_*) */
diff --git a/proto/bgp/config.Y b/proto/bgp/config.Y
index 8b0d4356..a37bb27a 100644
--- a/proto/bgp/config.Y
+++ b/proto/bgp/config.Y
@@ -200,6 +200,7 @@ bgp_proto:
| bgp_proto ALLOW LOCAL AS ';' { BGP_CFG->allow_local_as = -1; }
| bgp_proto ALLOW LOCAL AS expr ';' { BGP_CFG->allow_local_as = $5; }
| bgp_proto ALLOW BGP_LOCAL_PREF bool ';' { BGP_CFG->allow_local_pref = $4; }
+ | bgp_proto ALLOW BGP_MED bool ';' { BGP_CFG->allow_med = $4; }
| bgp_proto ALLOW AS SETS bool ';' { BGP_CFG->allow_as_sets = $5; }
| bgp_proto GRACEFUL RESTART bool ';' { BGP_CFG->gr_mode = $4; }
| bgp_proto GRACEFUL RESTART AWARE ';' { BGP_CFG->gr_mode = BGP_GR_AWARE; }