94 Fibre Channel Interface Manual, Rev. D9.2.11 Report Node Capabilities (RNC)Report Node Capabilities (RNC) is sent to a target node to request that the node report on its capabilities. The node does this by returning a list of specifications and the supported revision level of the specification.
Field definitions (listed alphabetically)
Capability Entries
There may be from zero to n number of capability entries (see the table below for the format of capability entries). The limit
is that the payload length can not be greater than 256 bytes.
Document Identifier
This number identifies the document. Valid document numbers range from:
01h through 05h
10h through 13h, and
20h through 27h
Flags
Bit 7 = 0 - report on this capability.
Bit 7 = 1 - Invalidate this capability selection.
Bit 6 = 1 - There is an extension on the capability entry. This is not supported. This bit must = 0.
Table 51: RNC Payload
Bit
Byte
76543210
0LS Command Code
1Reserved
2(MSB)
3 Payload Length
(LSB)
4RNC Flags
5Reserved
6Reserved
7VU Information Length
8
.
.
15
Vendor Identifier - RNC Accept Payload only
16 Capability Entries
Table 52: Capability Entries
Bit
Byte
76543210
0Flags
1Document Identifier
2Low Revision - RNC Accept Payload only
3High Revision - RNC Accept Payload only
Table
number
51
52
52