POS Ports

The POS Ports subtab displays ONS 15600 ASAP card packet-over-SONET (POS) port information. The POS Ports subtab options are described in the following table.

Port

The port identifier number.

Port Name

The port name.

Admin State

The port administration state. Choosing an administrative state from the drop-down list and clicking Apply changes the port's service state unless network conditions prevent the change. Admin states include:

  • IS-Puts the port in service. The port service state changes to IS-NR.

  • OOS,DSBLD-Removes the port from service and disables it. The port service state changes to OOS-MA,DSBLD.

  • OOS,MT-Removes the port from service for maintenance. The port service state changes to OOS-MA,MT.

  • IS,AINS-Puts the port in the OOS-AU,AINS service state. Alarms and conditions are suppressed. When the port receives a valid signal, the service state automatically changes to IS-NR.

Service State

An autonomously generated state that gives the overall condition of the port. Service states appear in the format: Primary State-Primary State Qualifier, Secondary State. For additional state information, see States.

Framing Type

Shows the encapsulation type set on the Card subtab:

  • HDLC-High-level data link control. Does not support VLAN trunking, which is standard on most Cisco data devices.

  • GFP-F-Frame-mapped generic framing procedure; a protocol data unit (PDU)-oriented adaptation mode that maps a client frame into one GFP frame.

  • X.86-Link access procedure (LAP), an HDLC-like framing structure to encapsulate IEEE 802.3 Ethernet frames.

Encap CRC

Sets the cyclic redundancy check (CRC) to verify the integrity of the transmitted data. Possible values are:

  • 16-Bit or 32-Bit for HDLC

  • 32-Bit or None for GFP-F

  • 32-Bit for X.86

Link State

The physical port state. Possible values are Up and Down.

MTU

Maximum transfer unit. The largest acceptable packet size configured for that port. The maximum setting is 9000 and the default size is 1500. The MTU value is 0 until the POS port is used in creating a circuit.

Apply

Applies changes made to the port name.

Reset

Cancels any changes to the port name and returns the field to its last-saved settings.

Help

Displays context-sensitive help.