From ab6850cc518230956aee5affc90f6b182e7928d6 Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Date: Tue, 22 Oct 2013 14:27:28 +0900
Subject: [PATCH] bgp: well known communities

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 ryu/lib/packet/bgp.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ryu/lib/packet/bgp.py b/ryu/lib/packet/bgp.py
index dab5150c..002e6901 100644
--- a/ryu/lib/packet/bgp.py
+++ b/ryu/lib/packet/bgp.py
@@ -79,6 +79,11 @@ BGP_ATTR_TYPE_AS4_AGGREGATOR = 18  # RFC 4893
 
 AS_TRANS = 23456  # RFC 4893
 
+# Well known commmunities  (RFC 1997)
+BGP_COMMUNITY_NO_EXPORT = 0xffffff01
+BGP_COMMUNITY_NO_ADVERTISE = 0xffffff02
+BGP_COMMUNITY_NO_EXPORT_SUBCONFED = 0xffffff03
+
 
 def pad(bin, len_):
     assert len(bin) <= len_