LLDP

Link Layer Discovery Protocol(LLDP, IEEE 802.1AB) http://standards.ieee.org/getieee802/download/802.1AB-2009.pdf

basic TLV format:

octets | 1          | 2             | 3 ...             n + 2 |
       --------------------------------------------------------
       | TLV type | TLV information | TLV information string  |
       | (7bits)  | string length   | (0-507 octets)          |
       |          | (9bits)         |                         |
       --------------------------------------------------------
bits   |8        2|1|8             1|

Organizationally specific TLV format:

octets | 1          | 2        | 3 ...  5 | 6       | 7 ...    n + 6 |
       ---------------------------------------------------------------
       | TLV type | Length     | OUI      | Subtype | Infomation     |
       | (7bits)  | (9bits)    | (24bits) | (8bits) | (0-507 octets) |
       ---------------------------------------------------------------
bits   |8        2|1|8        1|

LLDPDU format:

------------------------------------------------------------------------
| Chassis ID | Port ID | TTL | optional TLV | ... | optional TLV | End |
------------------------------------------------------------------------

Chasis ID, Port ID, TTL, End are mandatory optional TLV may be inserted in any order

class ryu.lib.packet.lldp.ChassisID(buf=None, *args, **kwargs)

Chassis ID TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
subtype	Subtype.
chassis_id	Chassis id corresponding to subtype.

class ryu.lib.packet.lldp.End(buf=None, *args, **kwargs)

End TLV encoder/decoder class

If binary data is specified for the argument buf, decode the data.

class ryu.lib.packet.lldp.ManagementAddress(buf=None, *args, **kwargs)

Management Address TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
addr_subtype	Address type.
addr	Device address.
intf_subtype	Interface type.
intf_num	Interface number.
oid	Object ID.

class ryu.lib.packet.lldp.OrganizationallySpecific(buf=None, *args, **kwargs)

Organizationally Specific TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
oui	Organizationally unique ID.
subtype	Organizationally defined subtype.
info	Organizationally defined information string.

class ryu.lib.packet.lldp.PortDescription(buf=None, *args, **kwargs)

Port description TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
port_description	Port description.

class ryu.lib.packet.lldp.PortID(buf=None, *args, **kwargs)

Port ID TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
subtype	Subtype.
port_id	Port ID corresponding to subtype.

class ryu.lib.packet.lldp.SystemCapabilities(buf=None, *args, **kwargs)

System Capabilities TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
subtype	Subtype.
system_cap	System Capabilities.
enabled_cap	Enabled Capabilities.

class ryu.lib.packet.lldp.SystemDescription(buf=None, *args, **kwargs)

System description TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
system_description	System description.

class ryu.lib.packet.lldp.SystemName(buf=None, *args, **kwargs)

System name TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
system_name	System name.

class ryu.lib.packet.lldp.TTL(buf=None, *args, **kwargs)

Time To Live TLV encoder/decoder class

An instance has the following attributes at least. If binary data is specified for the argument buf, decode the data.

Attribute	Description
ttl	Time To Live.

class ryu.lib.packet.lldp.lldp(tlvs)

LLDPDU encoder/decoder class.

An instance has the following attributes at least.

Attribute	Description
tlvs	List of TLV instance.