For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

zexiong_357458's avatar
zexiong_357458
Icon for Nimbostratus rankNimbostratus
Apr 03, 2018

gratitous arps may be sent out too quickly for network device to process, which may result in stale ARP entries on the device.

gratitous arps may be sent out too quickly for network device to process, which may result in stale ARP entries on the device. From the article,K7332: Gratuitous ARPs may be lost after a BIG-IP fail...
application delivery
BIG-IP
Simon_Blakely's avatar
Simon_Blakely
Icon for Employee rankEmployee
Apr 03, 2018

Some upstream devices will start dropping gratuitous ARPs above a certain threshold/rate.

 

If this occurs, then ARPs for some virtual IPs may not be received, and the old ARP address may be retained, causing traffic to be sent to the device that is now standby.

 

This issue only occurs with some network devices, and usually with a large config that has a large number of virtual addresses.