= AFI LLDP =

Our devices uses LLDP (''802.1AB Link Layer Discovery Protocol'') and LLDP-MED (''LLDP-Media Endpoint Discovery ANSI/TIA-1057'') protocols to describe themselves in local network.

== LLDP-MED ==

OUI: '''00-12-bb'''

At this moment we uses following subtypes described in protocol:
 . 5 - Hardware Revision
 . 6 - Firmware Revision
 . 8 - Serial Number
 . 9 - Manufacturer Name
 . 10 - Model Name

== LLDP-AFI ==

For more detailed information we append our ''Organizationally Specific'' block (with OUI: '''02-a6-b8'''). It can have two subtypes.

||<rowclass="bits">TLV type = 127||TLV len||organizationally unique identifier (OUI)||organizationally defined subtype||organizationally defined data||
||7 bit||9 bit||3 octets||1 octet||0≤n≤507 octets||

=== Subtype 1 ===

This block contains device Id and serial number. Although and in what chassis slot is inserted.

||<rowclass="bits">Block pos||Len||Description||
||6||2 octets||Device Id||
||8||6 octets||Device serial||
||14||2 octets||Device slot (optional)||

=== Subtype 2 ===

This block contains information about master and MStream connections.

||<rowclass="bits">Block pos||Len||Description||
||6||6 octets||Master MAC-address||
||12||4 octets||Master IP-address||
||16||2 octets||Master port||
||18||6 octets||MStream MAC-address||
||24||4 octets||MStream IP-address||
||28||2 octets||MStream port||
||30||1 octet||Lock status||

Lock status:
 * 1^st^ bit - is Master host
 * 2^nd^ bit - is MStream host