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In my environment job, we assign IP public segments to our customers. For example, I am using a /29 public segment. If the customer is only using two IP addresses, when I send a ping to the other IPs that the customer isn't using, I receive a TTL:Expired in transit message. This effect could elevate the CPU consumption.

Do you know any way to avoid this useless traffic?

We have an Arbor appliance and we use Cisco (90%) and Huawei (10%) devices.

Frnndo
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  • this isn't a security question but a router config question – schroeder Jun 14 '17 at 14:49
  • the devices would have to know that there wasn't an active device on the IP - I'm not sure how you would determine that – schroeder Jun 14 '17 at 14:52
  • I have been looking for a possible answer but i didn't find a way to detect free ip addresses and avoid this traffic, imaybe is there a way "to advise" about that our network? – Frnndo Jun 14 '17 at 15:23
  • You could try asking this question on https://networkengineering.stackexchange.com. If you do, consider adding some more details on the network topology and avoid asking questions which lead to resource recommendations, since those are off topic. – Teun Vink Jun 15 '17 at 05:19

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