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-rw-r--r--ryu/ofproto/ofproto_v1_0.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/ryu/ofproto/ofproto_v1_0.py b/ryu/ofproto/ofproto_v1_0.py
index 03993ae9..96a93cc9 100644
--- a/ryu/ofproto/ofproto_v1_0.py
+++ b/ryu/ofproto/ofproto_v1_0.py
@@ -15,6 +15,9 @@
from struct import calcsize
+
+MAX_XID = 0xffffffff
+
# define constants
OFP_VERSION = 0x01
OFP_MAX_TABLE_NAME_LEN = 32