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@@ 226-252 (lines=27) @@
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# draft-ietf-idr-flowspec-redirect-02 |
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# see RFC 5701 for ipv6 address specific extended community format |
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@ExtendedCommunityIPv6.register |
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class TrafficNextHopIPv6IETF ( ExtendedCommunityIPv6): |
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COMMUNITY_TYPE = 0x00 |
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COMMUNITY_SUBTYPE = 0x0C |
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__slots__ = ['ip', 'copy'] |
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def __init__ (self, ip, copy, community=None): |
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self.ip = ip |
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self.copy = copy |
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ExtendedCommunityIPv6.__init__( |
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self, |
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community if community is not None else pack( |
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"!2s16sH", |
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self._subtype(), |
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ip.pack(), |
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1 if copy else 0 |
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) |
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) |
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def __repr__ (self): |
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return "copy-to-nexthop-ietf" if self.copy else "redirect-to-nexthop-ietf" |
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@staticmethod |
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def unpack (data): |
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ip, bit = unpack('!16sH', data[2:20]) |
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return TrafficNextHopIPv6IETF(IPv6.ntop(ip), bool(bit & 0x01), data[:20]) |
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# =============================================================== TrafficNextHopSimpson |
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# draft-simpson-idr-flowspec-redirect-02 |
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@@ 194-220 (lines=27) @@
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# draft-ietf-idr-flowspec-redirect-02 |
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# see RFC 4360 for ipv4 address specific extended community format |
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@ExtendedCommunity.register |
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class TrafficNextHopIPv4IETF (ExtendedCommunity): |
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COMMUNITY_TYPE = 0x01 |
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COMMUNITY_SUBTYPE = 0x0C |
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__slots__ = ['ip', 'copy'] |
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def __init__ (self, ip, copy, community=None): |
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self.ip = ip |
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self.copy = copy |
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ExtendedCommunity.__init__( |
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self, |
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community if community is not None else pack( |
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"!2s4sH", |
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self._subtype(), |
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ip.pack(), |
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1 if copy else 0 |
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) |
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) |
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def __repr__ (self): |
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return "copy-to-nexthop-ietf" if self.copy else "redirect-to-nexthop-ietf" |
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@staticmethod |
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def unpack (data): |
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ip, bit = unpack('!4sH', data[2:8]) |
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return TrafficNextHopIPv4IETF(IPv4.ntop(ip), bool(bit & 0x01), data[:8]) |
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# =============================================================== TrafficNextHopIPv6IETF |
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# draft-ietf-idr-flowspec-redirect-02 |
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@@ 106-131 (lines=26) @@
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# ============================================================== TrafficRedirect |
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# RFC 5575 and 7674 |
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@ExtendedCommunity.register |
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class TrafficRedirect (ExtendedCommunity): |
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COMMUNITY_TYPE = 0x80 |
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COMMUNITY_SUBTYPE = 0x08 |
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__slots__ = ['asn','target'] |
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def __init__ (self, asn, target, community=None): |
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self.asn = asn |
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self.target = target |
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ExtendedCommunity.__init__( |
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self, |
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community if community is not None else pack( |
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"!2sHL", |
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self._subtype(), |
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asn,target |
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) |
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) |
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def __repr__ (self): |
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return "redirect:%s:%s" % (self.asn,self.target) |
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@staticmethod |
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def unpack (data): |
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asn,target = unpack('!HL',data[2:8]) |
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return TrafficRedirect(ASN(asn),target,data[:8]) |
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@ExtendedCommunity.register |
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@@ 26-51 (lines=26) @@
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# ================================================================== TrafficRate |
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# RFC 5575 |
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@ExtendedCommunity.register |
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class TrafficRate (ExtendedCommunity): |
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COMMUNITY_TYPE = 0x80 |
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COMMUNITY_SUBTYPE = 0x06 |
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__slots__ = ['asn','rate'] |
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def __init__ (self, asn, rate, community=None): |
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self.asn = asn |
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self.rate = rate |
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ExtendedCommunity.__init__( |
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self, |
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community if community is not None else pack( |
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"!2sHf", |
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self._subtype(), |
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asn,rate |
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) |
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) |
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def __repr__ (self): |
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return "rate-limit:%d" % self.rate |
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@staticmethod |
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def unpack (data): |
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asn,rate = unpack('!Hf',data[2:8]) |
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return TrafficRate(ASN(asn),rate,data[:8]) |
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# ================================================================ TrafficAction |
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@@ 259-283 (lines=25) @@
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# XXX: FIXME: I guess this should be a subclass of NextHop or IP .. |
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@ExtendedCommunity.register |
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class TrafficNextHopSimpson (ExtendedCommunity): |
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COMMUNITY_TYPE = 0x08 |
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COMMUNITY_SUBTYPE = 0x00 |
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__slots__ = ['copy'] |
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def __init__ (self, copy, community=None): |
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self.copy = copy |
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ExtendedCommunity.__init__( |
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self, |
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community if community is not None else pack( |
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"!2sLH", |
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self._subtype(), |
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0,1 if copy else 0 |
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) |
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) |
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def __repr__ (self): |
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return "copy-to-nexthop" if self.copy else "redirect-to-nexthop" |
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@staticmethod |
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def unpack (data): |
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bit, = unpack('!B',data[7:8]) |
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return TrafficNextHopSimpson(bool(bit & 0x01), data[:8]) |
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# ============================================================ TrafficRedirectIPv6 |
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# https://tools.ietf.org/html/rfc5701 |
Exa-Networks /
exabgp
