1.9 Standards Assignments
The protocol does not define any standards assignments; however, when used as a transport for an upper layer, it uses the standards assignments of that layer, as defined by that layer. For example, when serving as a transport for SMB2, the following port assignment is used, as defined in [MS-SMB2] section 1.9.
Parameter |
TCP Port Value |
Reference |
---|---|---|
Microsoft-DS |
445 (0x01BD) |
RDMA lower layers can optionally remap these ports to allow for reuse of port values when sharing a network with TCP protocol traffic, or provide a service mapping facility when the network does not natively support IANA-style ports. These transport-dependent facilities are documented in the specifications relevant to each lower-layer RDMA standard.
When transporting SMB traffic on iWARP, to permit coexistence of TCP and iWARP SMB listeners, a mapping is standardized for the SMB Direct protocol, as follows:
Parameter |
TCP Port Value |
Reference |
---|---|---|
smbdirect |
5445 |
[IANAPORT] |
This mapping is provided dynamically to network peers by the SDP Port Mapper protocol [SDP-Portmap], when an iWARP adapter is available on the local system, in response to a portmapper query for the mapped port corresponding to Microsoft-DS (445).