BMP

BMP

BGP Monitoring Protocol draft-ietf-grow-bmp-07

class os_ken.lib.packet.bmp.BMPInitiation(info, type_=4, len_=None, version=3)

BMP Initiation Message

Attribute Description
version Version. this packet lib defines BMP ver. 3
len Length field. Ignored when encoding.
type Type field. one of BMP_MSG_ constants.
info One or more piece of information encoded as a TLV
classmethod parser(buf)

Decode a protocol header.

This method is used only when decoding a packet.

Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

  • An object to describe the decoded header.
  • A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
  • The rest of packet.
class os_ken.lib.packet.bmp.BMPMessage(type_, len_=None, version=3)

Base class for BGP Monitoring Protocol messages.

An instance has the following attributes at least. Most of them are same to the on-wire counterparts but in host byte order. __init__ takes the corresponding args in this order.

Attribute Description
version Version. this packet lib defines BMP ver. 3
len Length field. Ignored when encoding.
type Type field. one of BMP_MSG_ constants.
classmethod parser(buf)

Decode a protocol header.

This method is used only when decoding a packet.

Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

  • An object to describe the decoded header.
  • A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
  • The rest of packet.
serialize()

Encode a protocol header.

This method is used only when encoding a packet.

Encode a protocol header. Returns a bytearray which contains the header.

payload is the rest of the packet which will immediately follow this header.

prev is a packet_base.PacketBase subclass for the outer protocol header. prev is None if the current header is the outer-most. For example, prev is ipv4 or ipv6 for tcp.serialize.

class os_ken.lib.packet.bmp.BMPPeerDownNotification(reason, data, peer_type, is_post_policy, peer_distinguisher, peer_address, peer_as, peer_bgp_id, timestamp, version=3, type_=2, len_=None)

BMP Peer Down Notification Message

Attribute Description
version Version. this packet lib defines BMP ver. 3
len Length field. Ignored when encoding.
type Type field. one of BMP_MSG_ constants.
reason Reason indicates why the session was closed.
data vary by the reason.
classmethod parser(buf)

Decode a protocol header.

This method is used only when decoding a packet.

Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

  • An object to describe the decoded header.
  • A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
  • The rest of packet.
class os_ken.lib.packet.bmp.BMPPeerMessage(peer_type, is_post_policy, peer_distinguisher, peer_address, peer_as, peer_bgp_id, timestamp, version=3, type_=None, len_=None)

BMP Message with Per Peer Header

Following BMP Messages contain Per Peer Header after Common BMP Header.

  • BMP_MSG_TYPE_ROUTE_MONITRING
  • BMP_MSG_TYPE_STATISTICS_REPORT
  • BMP_MSG_PEER_UP_NOTIFICATION
Attribute Description
version Version. this packet lib defines BMP ver. 3
len Length field. Ignored when encoding.
type Type field. one of BMP_MSG_ constants.
peer_type The type of the peer.
is_post_policy Indicate the message reflects the post-policy Adj-RIB-In
peer_distinguisher Use for L3VPN router which can have multiple instance.
peer_address The remote IP address associated with the TCP session.
peer_as The Autonomous System number of the peer.
peer_bgp_id The BGP Identifier of the peer
timestamp The time when the encapsulated routes were received.
classmethod parser(buf)

Decode a protocol header.

This method is used only when decoding a packet.

Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

  • An object to describe the decoded header.
  • A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
  • The rest of packet.
class os_ken.lib.packet.bmp.BMPPeerUpNotification(local_address, local_port, remote_port, sent_open_message, received_open_message, peer_type, is_post_policy, peer_distinguisher, peer_address, peer_as, peer_bgp_id, timestamp, version=3, type_=3, len_=None)

BMP Peer Up Notification Message

Attribute Description
version Version. this packet lib defines BMP ver. 3
len Length field. Ignored when encoding.
type Type field. one of BMP_MSG_ constants.
peer_type The type of the peer.
peer_flags Provide more information about the peer.
peer_distinguisher Use for L3VPN router which can have multiple instance.
peer_address The remote IP address associated with the TCP session.
peer_as The Autonomous System number of the peer.
peer_bgp_id The BGP Identifier of the peer
timestamp The time when the encapsulated routes were received.
local_address The local IP address associated with the peering TCP session.
local_port The local port number associated with the peering TCP session.
remote_port The remote port number associated with the peering TCP session.
sent_open_message The full OPEN message transmitted by the monitored router to its peer.
received_open_message The full OPEN message received by the monitored router from its peer.
classmethod parser(buf)

Decode a protocol header.

This method is used only when decoding a packet.

Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

  • An object to describe the decoded header.
  • A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
  • The rest of packet.
class os_ken.lib.packet.bmp.BMPRouteMonitoring(bgp_update, peer_type, is_post_policy, peer_distinguisher, peer_address, peer_as, peer_bgp_id, timestamp, version=3, type_=0, len_=None)

BMP Route Monitoring Message

Attribute Description
version Version. this packet lib defines BMP ver. 3
len Length field. Ignored when encoding.
type Type field. one of BMP_MSG_ constants.
peer_type The type of the peer.
peer_flags Provide more information about the peer.
peer_distinguisher Use for L3VPN router which can have multiple instance.
peer_address The remote IP address associated with the TCP session.
peer_as The Autonomous System number of the peer.
peer_bgp_id The BGP Identifier of the peer
timestamp The time when the encapsulated routes were received.
bgp_update BGP Update PDU
classmethod parser(buf)

Decode a protocol header.

This method is used only when decoding a packet.

Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

  • An object to describe the decoded header.
  • A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
  • The rest of packet.
class os_ken.lib.packet.bmp.BMPStatisticsReport(stats, peer_type, is_post_policy, peer_distinguisher, peer_address, peer_as, peer_bgp_id, timestamp, version=3, type_=1, len_=None)

BMP Statistics Report Message

Attribute Description
version Version. this packet lib defines BMP ver. 3
len Length field. Ignored when encoding.
type Type field. one of BMP_MSG_ constants.
peer_type The type of the peer.
peer_flags Provide more information about the peer.
peer_distinguisher Use for L3VPN router which can have multiple instance.
peer_address The remote IP address associated with the TCP session.
peer_as The Autonomous System number of the peer.
peer_bgp_id The BGP Identifier of the peer
timestamp The time when the encapsulated routes were received.
stats Statistics (one or more stats encoded as a TLV)
classmethod parser(buf)

Decode a protocol header.

This method is used only when decoding a packet.

Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

  • An object to describe the decoded header.
  • A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
  • The rest of packet.
class os_ken.lib.packet.bmp.BMPTermination(info, type_=5, len_=None, version=3)

BMP Termination Message

Attribute Description
version Version. this packet lib defines BMP ver. 3
len Length field. Ignored when encoding.
type Type field. one of BMP_MSG_ constants.
info One or more piece of information encoded as a TLV
classmethod parser(buf)

Decode a protocol header.

This method is used only when decoding a packet.

Decode a protocol header at offset 0 in bytearray buf. Returns the following three objects.

  • An object to describe the decoded header.
  • A packet_base.PacketBase subclass appropriate for the rest of the packet. None when the rest of the packet should be considered as raw payload.
  • The rest of packet.
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