| IfIndex | The ifIndex of the SDLC interface. |
| Name | An octet string that defines the physical port to which this interface is assigned. It has implementation-specific significance. Its value is unique within the administered system. It must contain only ASCII printable characters. Should an implementation choose to accept a write operation for this object, it causes the logical port definition associated with the table instance to be moved to a different physical port. A write operation does not take effect until the port is cycled inactive. |
| LowerInterface | This object identifies the ifIndex of the interface immediately below this interface (i.e. a physical or virtual port). A value of 0 indicates that this SDLC instance is not assigned to a physical or virtual port. |
| Role | This object describes the role that the link station assumes the next time a connection is established. Even though this is defined as a port object, it is a link station attribute in the sense that a role is per link station. However, it is not possible to vary link station roles on a particular port. For example, if an SDLC port is configured to primary, all link stations on that port must be primary. |
| Type | Shows whether the SDLC port is to connect to a leased or switched line. However, here only leased is supported. |
| Topology | Shows whether the SDLC port is capable of operating in either a point-to-point or multipoint topology. nvmSdlcPortTopology - multipoint implies the port can also operate in a point-to-point topology. nvmSdlcPortTopology - pointToPoint does not imply the port can operate in a multipoint topology. A write operation to this administrative value does not take effect until the SDLC port has been cycled inactive. |
| SlowPollTimer | Shows the elapsed time (in 1/100ths of a second) between polls for failed secondary link station addresses. Depending on the implementation, a write operation to this administered value may not take effect until the port is cycled inactive. This object only has meaning for SDLC ports where Role is set to primary and Topology is set to multipoint. |
| MaxRcvWindow | Shows the maximum number of unacknowledged frames that can be received. A value of zero indicates that the value passed on an XID exchange is used. |
| WriteTimer | Shows the maximum time that the data link layer allows for frames to be truncated. The value is given in milliseconds. |
| WriteTimerRetry | Shows the maximum number of retries attempted to transmit a frame. A value of 65535 indicates infinite retries. |
| ConnTimer | Shows how long the data link layer will wait before failing an attempt to activate a port. The value is expressed in milliseconds. |
| ConnTimerRetry | Shows the number of times the data link layer will attempt to retry an activate port request. A value of 65535 indicates that the activate request will retry infinitely. |
| PrimaryDuplex | Shows whether the primary station on this link supports full or half duplex. |
| SecondaryDuplex | Shows whether the secondary station on this link supports full or half duplex. |
| UseReject | Shows whether the link can send a reject whenever an I\x7f frame is received with an invalid sequence number. |
