схема базы данных Open_vSwitch (Open_vSwitch database schema)
IPFIX TABLE
Configuration for sending packets to IPFIX collectors.
IPFIX is a protocol that exports a number of details about flows.
The IPFIX implementation in Open vSwitch samples packets at a
configurable rate, extracts flow information from those packets,
optionally caches and aggregates the flow information, and sends
the result to one or more collectors.
IPFIX in Open vSwitch can be configured two different ways:
• With per-bridge sampling, Open vSwitch performs
IPFIX sampling automatically on all packets that
pass through a bridge. To configure per-bridge
sampling, create an IPFIX record and point a Bridge
table's ipfix column to it. The
Flow_Sample_Collector_Set table is not used for
per-bridge sampling.
• With flow-based sampling, sample actions in the
OpenFlow flow table drive IPFIX sampling. See
ovs-actions(7) for a description of the sample
action.
Flow-based sampling also requires database
configuration: create a IPFIX record that describes
the IPFIX configuration and a
Flow_Sample_Collector_Set record that points to the
Bridge whose flow table holds the sample actions
and to IPFIX record. The ipfix in the Bridge table
is not used for flow-based sampling.
Summary:
targets set of strings
cache_active_timeout optional integer, in range 0 to
4,200
cache_max_flows optional integer, in range 0 to
4,294,967,295
other_config : enable-tunnel-sampling
optional string, either true or
false
other_config : virtual_obs_id optional string
Per-Bridge Sampling:
sampling optional integer, in range 1 to
4,294,967,295
obs_domain_id optional integer, in range 0 to
4,294,967,295
obs_point_id optional integer, in range 0 to
4,294,967,295
other_config : enable-input-sampling
optional string, either true or
false
other_config : enable-output-sampling
optional string, either true or
false
Common Columns:
external_ids map of string-string pairs
Details:
targets: set of strings
IPFIX target collectors in the form ip:port.
cache_active_timeout: optional integer, in range 0 to 4,200
The maximum period in seconds for which an IPFIX flow
record is cached and aggregated before being sent. If not
specified, defaults to 0. If 0, caching is disabled.
cache_max_flows: optional integer, in range 0 to 4,294,967,295
The maximum number of IPFIX flow records that can be
cached at a time. If not specified, defaults to 0. If 0,
caching is disabled.
other_config : enable-tunnel-sampling: optional string, either
true or false
Set to true to enable sampling and reporting tunnel header
7-tuples in IPFIX flow records. Tunnel sampling is enabled
by default.
The following enterprise entities report the sampled
tunnel info:
tunnelType:
ID: 891, and enterprise ID 6876 (VMware).
type: unsigned 8-bit integer.
data type semantics: identifier.
description: Identifier of the layer 2 network
overlay network encapsulation type: 0x01 VxLAN,
0x02 GRE, 0x03 LISP, 0x07 GENEVE.
tunnelKey:
ID: 892, and enterprise ID 6876 (VMware).
type: variable-length octetarray.
data type semantics: identifier.
description: Key which is used for identifying an
individual traffic flow within a VxLAN (24-bit
VNI), GENEVE (24-bit VNI), GRE (32-bit key), or
LISP (24-bit instance ID) tunnel. The key is
encoded in this octetarray as a 3-, 4-, or 8-byte
integer ID in network byte order.
tunnelSourceIPv4Address:
ID: 893, and enterprise ID 6876 (VMware).
type: unsigned 32-bit integer.
data type semantics: identifier.
description: The IPv4 source address in the tunnel
IP packet header.
tunnelDestinationIPv4Address:
ID: 894, and enterprise ID 6876 (VMware).
type: unsigned 32-bit integer.
data type semantics: identifier.
description: The IPv4 destination address in the
tunnel IP packet header.
tunnelProtocolIdentifier:
ID: 895, and enterprise ID 6876 (VMware).
type: unsigned 8-bit integer.
data type semantics: identifier.
description: The value of the protocol number in
the tunnel IP packet header. The protocol number
identifies the tunnel IP packet payload type.
tunnelSourceTransportPort:
ID: 896, and enterprise ID 6876 (VMware).
type: unsigned 16-bit integer.
data type semantics: identifier.
description: The source port identifier in the
tunnel transport header. For the transport
protocols UDP, TCP, and SCTP, this is the source
port number given in the respective header.
tunnelDestinationTransportPort:
ID: 897, and enterprise ID 6876 (VMware).
type: unsigned 16-bit integer.
data type semantics: identifier.
description: The destination port identifier in the
tunnel transport header. For the transport
protocols UDP, TCP, and SCTP, this is the
destination port number given in the respective
header.
Before Open vSwitch 2.5.90, other_config:enable-tunnel-
sampling was only supported with per-bridge sampling, and
ignored otherwise. Open vSwitch 2.5.90 and later support
other_config:enable-tunnel-sampling for per-bridge and
per-flow sampling.
other_config : virtual_obs_id: optional string
A string that accompanies each IPFIX flow record. Its
intended use is for the ``virtual observation ID,'' an
identifier of a virtual observation point that is locally
unique in a virtual network. It describes a location in
the virtual network where IP packets can be observed. The
maximum length is 254 bytes. If not specified, the field
is omitted from the IPFIX flow record.
The following enterprise entity reports the specified
virtual observation ID:
virtualObsID:
ID: 898, and enterprise ID 6876 (VMware).
type: variable-length string.
data type semantics: identifier.
description: A virtual observation domain ID that
is locally unique in a virtual network.
This feature was introduced in Open vSwitch 2.5.90.
Per-Bridge Sampling:
These values affect only per-bridge sampling. See above for a
description of the differences between per-bridge and flow-based
sampling.
sampling: optional integer, in range 1 to 4,294,967,295
The rate at which packets should be sampled and sent to
each target collector. If not specified, defaults to 400,
which means one out of 400 packets, on average, will be
sent to each target collector.
obs_domain_id: optional integer, in range 0 to 4,294,967,295
The IPFIX Observation Domain ID sent in each IPFIX packet.
If not specified, defaults to 0.
obs_point_id: optional integer, in range 0 to 4,294,967,295
The IPFIX Observation Point ID sent in each IPFIX flow
record. If not specified, defaults to 0.
other_config : enable-input-sampling: optional string, either
true or false
By default, Open vSwitch samples and reports flows at
bridge port input in IPFIX flow records. Set this column
to false to disable input sampling.
other_config : enable-output-sampling: optional string, either
true or false
By default, Open vSwitch samples and reports flows at
bridge port output in IPFIX flow records. Set this column
to false to disable output sampling.
Common Columns:
The overall purpose of these columns is described under Common
Columns at the beginning of this document.
external_ids: map of string-string pairs
