To understand the physical network topology, SmartFabric OS10 discovers end-host devices based on specific custom originator TLVs in LLDP PDUs sent out through the connected ports by the iDRAC, regardless of whether the switches are in Full Switch or SmartFabric mode. The types of information provided are shown in the following table.
For servers connected to switches in SmartFabric mode, the iDRAC LLDP topology feature must be enabled. Without it, the fabric does not recognize the compute sled and the user cannot deploy networks to the sled.
TLV | Subtype | Description |
Originator | 1 | Indicates the iDRAC string that is used as originator. This string enables external switches to identify iDRAC LLDP PDUs. |
Port type | 2 | The following are the applicable port types:
|
Port FQDD | 3 | Port number that uniquely identifies a NIC port within a server. |
Server service tag | 4 | Service tag ID of the server. |
Server model name | 5 | Model name of the server. |
Server slot number | 6 | Slot number of the server. For example: 1, 2, 3, 1a, and 1b. |
Chassis service tag | 7 | Service tag ID of the chassis (applicable only to MX servers). |
Chassis model | 8 | Model name of the chassis (applicable only to MX servers). |
IOM service tag | 9 | Service tag ID of the IOM device (applicable only to MX servers). |
IOM model name | 10 | Model name of the IOM device (applicable only to MX servers). |
IOM slot label | 11 | Slot label of the IOM device. For example: A1, B1, A2, and B2 (applicable only to MX servers). |
IOM port number | 12 | Port number of the NIC. For example: 1, 2, 3, and so on. |
For additional information about LLDP and TLVs, see the Link Layer Discovery Protocol section of the Dell SmartFabric OS10 User Guide. Find the relevant version of the User Guide in the OME-M and OS10 compatibility and documentation table.
See the Common CLI troubleshooting commands for Full Switch and SmartFabric modes section for examples of the show lldp neighbors command, which provides information about connected devices.