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Spirent TestCenter: How to create Gratuitous ARP packets?

Environment/Versions
  • Spirent TestCenter
  • All Versions
  • ARP
  • Gratuitous ARP

 

Procedure

Create a Raw StreamBlock as shown below:

  • Set auto length and remove signature

  • Delete the existing IPv4 header.

 

  • Add the ARP header.

 

  • Fill in the fields as shown below.
    • ‚Äč‚ÄčEthernet MAC = Sender Hardware Address
    • can be either ARP Request or ARP Reply
    • Sender Protocol Address = Target Protocol Address (this should be the gateway address that is having its mac changed)
    • Target Hardware Address can be either all zeros (00:00:00:00:00:00) or all ffs (FF:FF:FF:FF:FF:FF)

 

  • If you need to send gratuitous ARP from many devices, we can add modifiers as shown below.

Notes

 

  • The streamblock may not change its destination MAC if there is a Device on the same subnet/vlan with the "Resolve IPv4 Gateway MAC Address" disabled.
    • The issue seems to be tied to both the Resolve MAC and also the Enable Ping option.
    • There is no open CR for this. Simply enabling "Resolve IPv4 Gateway MAC Address" should fix the issue.

 

Attachments
Attachment
Attachment Description
Sample TCC file

Attachment
Attachment Description
Sample pcap file


Product : Spirent TestCenter,Spirent TestCenter,ARP