InfiniBand Network Architecture

SMP MADs

General

A detailed description of SM methods, attributes, and modifiers can be found in “SM Methods and Attributes” on page 809. Additional information on the SM can be found in the following chapters:

• “Multiple SMs” on page 851.

• “Discovery” on page 871.

LID-Routed SMPs

Once the Master SM has assigned LID addresses to all ports in the subnet, SMP's may be transmitted in the same manner as any normal packet: switch Forwarding Tables use the packet's LRH:DLID to guide the packet to the destination port. In that case, the 256-byte MAD encapsulated in the SMP's data payload field has the format shown in Table 28-5 on page 788.

Table 28-5. LID-Routed SMP MAD Format

Dword		Byte 0	Byte 1	Byte 2	Byte 3
0	Base MAD Header	Base Version=01h	Management Class ...