BIER in non-MPLS netowrks
as decsribed in section 2.2
ihttps://tools.ietf.org/html/draft-ietf-bier-mpls-encapsulation-10
with BIFT encoding from:
https://tools.ietf.org/html/draft-wijnandsxu-bier-non-mpls-bift-encoding-00
changes:
1 - introduce the new BIFT lookup table. BIER tables that have an associated
MPLS label are added to the MPLS-FIB. Those that don't are added to the
BIER table
2 - BIER routes that have no associated output MPLS label will add a BIFT label.
3 - The BIER FMask has a path-list as a member to resolve via any possible path.
Change-Id: I1fd4d9dbd074f0e855c16e9329b81460ebe1efce
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/test/patches/scapy-2.3.3/bier.patch b/test/patches/scapy-2.3.3/bier.patch
index 024805d..50814d4 100644
--- a/test/patches/scapy-2.3.3/bier.patch
+++ b/test/patches/scapy-2.3.3/bier.patch
@@ -3,7 +3,7 @@
index 0000000..e173cdb
--- /dev/null
+++ b/scapy/contrib/bier.py
-@@ -0,0 +1,39 @@
+@@ -0,0 +1,53 @@
+# http://trac.secdev.org/scapy/ticket/31
+
+# scapy.contrib.description = MPLS
@@ -11,7 +11,7 @@
+
+from scapy.packet import *
+from scapy.fields import *
-+from scapy.layers.inet import IP
++from scapy.layers.inet import IP, UDP
+from scapy.layers.inet6 import IPv6
+
+class BIERLength:
@@ -20,12 +20,25 @@
+ BIER_LEN_256 = 2
+
+
-+
+BIERnhcls = { 1: "MPLS",
+ 2: "MPLS",
+ 4: "IPv4",
+ 5: "IPv6" }
+
++
++class BIFT(Packet):
++ name = "BIFT"
++ fields_desc = [ BitField("bsl", 0, 4),
++ BitField("sd", 0, 8),
++ BitField("set", 0, 8),
++ BitField("cos", 0, 3),
++ BitField("s", 1, 1),
++ ByteField("ttl", 0) ]
++
++ def guess_payload_class(self, payload):
++ return BIER
++
++
+class BIER(Packet):
+ name = "BIER"
+ fields_desc = [ BitField("id", 5, 4),
@@ -43,3 +56,4 @@
+
+bind_layers(BIER, IP, Proto=4)
+bind_layers(BIER, IPv6, Proto=5)
++bind_layers(UDP, BIFT, dport=8138)