# Circuit Table

## Navigation

Device > Monitor > ISIS > Circuit Table

The Circuit Table dialog box lists the circuits used by this Intermediate System (IS). The following information appears:

> Index (ciiCircIndex)

> If Index (ciiCircIfIndex)

> Specifier (ciiCircIfSubIndex)

With a circuit selected, click either Circuit Errors to launch the Circuit Errors dialog box or Packet Statistics to launch the Packet Statistics dialog box.

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### Index (ciiCircIndex)

The identifier of this circuit, unique within the IS. This object is used for SNMP indexing purposes only and does not need to correspond to any protocol value.

### If Index (ciiCircIfIndex)

Value of ifIndex for the interface to which this circuit corresponds. This object cannot be modified after creation

### Specifier (ciiCircIfSubIndex)

A specifier for the part of the interface ifIndex to which this circuit corresponds, such as a DLCI or VPI/VCI. This object cannot be modified after creation