# SRP MAC Info

Use this option to view generic information of a particular SRP interface.

## Procedure

To access SRP MAC information:

Right-click the device and select Configure from the popup menu.

SRP MAC Info dialog box displays:

MAC Address (srpMACAddress)

Priority Threshold Value (srpPriorityThreshold)

Number of Nodes (srpNodesOnTheRing)

IPS State (srpIpsState)

Node Locked out (srpIpsLockedOut)

Wrap State Timer (srpIpsWaitToRestoreTimer)

Elapsed Time (srpIfTimeElapsed)

Valid Interval (srpIfValidIntervals)

### MAC Address (srpMACAddress)

MAC 48-bit individual MAC address.

### Priority Threshold Value (srpPriorityThreshold)

Priority threshold value compared against 3 bits of priority contained in each packet SRP header. If packet priority is greater or equal to this threshold, that packet is placed in high priority transmit or transit queue. If packet priority is less than this threshold, it is placed in low priority transmit or transit queue.

Since there are only two types of priority queues (High Priority and Low Priority) a packet is treated as either low or high priority once it is on the ring. Each node determines the threshold value for classifying what is considered a high priority packet and what is considered a low priority packet.

### Number of Nodes (srpNodesOnTheRing)

Number of nodes in SRP ring. When interface is down the value is 0.

### IPS State (srpIpsState)

Each node in Intelligent Protection Switching (IPS) is one of the following states:

Idle means in this mode the node is ready to perform protection and sends idle IPS messages to both neighboring nodes which include self in the source address field {0, SELF, 0, S}.

PassThrough means node participates in a protection switch by passing wrapped traffic and long path signalling through itself. This state is entered based on received IPS messages.

Wrapped means node participates in a protection switch with a wrap present. This state is entered based on protection request issued locally or based on received IPS messages.

When the interface is down the value for IPS state is passThrough.

### Node Locked out (srpIpsLockedOut)

Boolean flag indicating node LockedOut of protection state. If it is true then Intelligent Protection Swiching is disabled and the node does not wrap on either side of the interface.

### Wrap State Timer (srpIpsWaitToRestoreTimer)

Indicates the length of time in seconds, to remain in the wrap state, after the cause of a wrap is removed. This mechanism prevents protection switch oscillations. Default value is 60 sec.

### Elapsed Time (srpIfTimeElapsed)

Number of seconds, including partial seconds, that have elapsed since the beginning of the current measurement interval as described in RFC 2493. If, for some reason, such as an adjustment in the system time-of-day clock occurs, the current interval exceeds the maximum value and the agent returns the maximum value.

### Valid Interval (srpIfValidIntervals)

Number of previous 15-minute measurement intervals for which data is collected. A SRP interface must be capable of supporting at least n intervals. The minimum value of n is 4. Default of n is 32. The maximum value of n is 96. The value is <n> unless the measurement was (re-)started within the last (<n>*15) minutes, in which case the value is the number of complete 15 minute intervals for which the agent has at least some data. In certain cases (e.g., in the case where the agent is a proxy) it is possible that some intervals are unavailable. In this case, this interval is the maximum interval number for which data is available.

## Related Topics

The CiscoView Monitor Window

Monitoring Ports

Monitoring the Device

Monitoring the Device Environment

Monitoring Devices and Components

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