Topology Discovery: Difference between revisions
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===Link-Local Topology Discovery (LLTD) Protocol=== | ===Link-Local Topology Discovery (LLTD) Protocol=== | ||
A [http://msdn.microsoft.com/en-us/windows/hardware/gg463061.aspx Microsoft protocol] native to Windows Vista and supported on Windows XP via add-on. It operates directly atop Ethernet, using protocol number 0x88D9. | A [http://msdn.microsoft.com/en-us/windows/hardware/gg463061.aspx Microsoft protocol] native to Windows Vista and supported on Windows XP via add-on. It operates directly atop Ethernet, using protocol number 0x88D9. | ||
====LLTD Packet Format==== | |||
* Ethernet header (14 bytes): | |||
{| class="wikitable" border="1" | |||
! Field | |||
! Size | |||
|- | |||
| Destination MAC | |||
| 6 bytes | |||
|- | |||
| Source MAC | |||
| 6 bytes | |||
|- | |||
| Protocol | |||
(0x88d9 in [[Endianness|NBO]]) | |||
| 2 bytes | |||
|} | |||
==Inferring Topology== | ==Inferring Topology== | ||
[[CATEGORY: Networking]] | [[CATEGORY: Networking]] | ||