October 2002
Intermediate to advanced
1280 pages
24h 35m
English
Content preview from InfiniBand Network Architecture
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SM Control Packets
Definition
An SM uses Control Packets to command another SM to change state (or to acknowledge receipt of a state change command).
How SM Sends a Control Packet
A Control Packet consists of an SMP specifying the following:
SubnSet(SMInfo) operation.
The attribute modifier (in the base MAD header—see Table 28-1 on page 783) is set to one of the values indicated in Table 30-1 on this page.
| Modifier Value | Description |
|---|---|
| 1 | Identifies this as a Handover Control Packet. It is issued by the current Master SM to initiate the process of handing over mastership to a higher-priority Standby or Master SM that was discovered during its periodic sweep or because a trap was received informing the Master ... |
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