show isdp

This command displays global ISDP settings.

Format show isdp
Mode Privileged EXEC
Term
Definition
Timer

The frequency with which this device sends ISDP packets. This value is given in seconds.

Hold Time

The length of time the receiving device should save information sent by this device. This value is given in seconds.

Version 2 Advertisements

The setting for sending ISDPv2 packets. If disabled, version 1 packets are transmitted.

Neighbors table time since last change

The amount of time that has passed since the ISPD neighbor table changed.

Device ID

The Device ID advertised by this device. The format of this Device ID is characterized by the value of the Device ID Format object.

Device ID Format Capability

The Device ID format capability of the device.

  • serialNumber indicates that the device uses a serial number as the format for its Device ID.
  • macAddress indicates that the device uses a Layer 2 MAC address as the format for its Device ID.
  • other indicates that the device uses its platform-specific format as the format for its Device ID.
Device ID Format

The Device ID format of the device.

  • serialNumber indicates that the value is in the form of an ASCII string containing the device serial number.
  • macAddress indicates that the value is in the form of a Layer 2 MAC address.
  • other indicates that the value is in the form of a platform specific ASCII string containing info that identifies the device. For example, ASCII string contains serialNumber appended/prepended with system name.

The following example shows CLI display output for the command.

(Extreme 220) (Routing) #show isdp
Timer.......................................... 30
Hold Time...................................... 180
Version 2 Advertisements....................... Enabled
Neighbors table time since last change......... 0 days 00:00:00
Device ID...................................... 1114728
Device ID format capability.................... Serial Number, Host Name
Device ID format............................... Serial Number