Score:0

About 198.18.0.0/15 segment

by flag

What exactly is the use case of 198.18.0.0/15 segment

As per whois records, this segment is reserved as depicting below -

NetRange:   198.18.0.0 - 198.19.255.255
CIDR:   198.18.0.0/15
NetName:    SPECIAL-IPV4-BENCHMARK-TESTING-IANA-RESERVED

Can i use this segment like the way i use 10/8 as private one in my enterprise network or is this segment for any other special purpose ?

in flag
That is a potentially routable space, There is also [100.64.0.0/10](https://datatracker.ietf.org/doc/html/rfc6598#section-7)
cn flag
@NiKiZe: I've seen providers use these address spaces when setting up B2B links. There's also vendors that have apps that intercommunicate, I've seen one using 100.64.
Score:2
jm flag

According to RFC 6815, this subnet is used for benchmarking inter-network communications. I would not recommend using this as a private network space.

Gaurav Kansal avatar
by flag
why so ? what can be the potential issues if i use 198.18/15 as private segment like the way we all use 10/8
jm flag
@GauravKansal 198.15 is a routable address. You sure you don't want to use `1.1.0.0/16`? It's been done before.
Michael Hampton avatar
cz flag
More to the point, it says that such packets may be discarded. Only equipment under test can reasonably be expected to act on packets with these addresses.
Ron Maupin avatar
us flag
RFC 6815 is an Informational RFC, not a Standards Track RFC.
Gaurav Kansal avatar
by flag
@RonMaupin what's the difference between Informational and standard track rfc ?
Ron Maupin avatar
us flag
See [this fairly comprehensive answer](https://serverfault.com/a/755655/324849).
Score:2
cn flag

Regarding the special purpose to that net, RFC 6815 is titled RFC 2544: Use on Production Networks Considered Harmful as a warning about such traffic generation until loss test procedures. Some in the ITEF argue so strongly about the need to air gap such a test procedure they added a dedicated private address space, and wrote a statement.

That is not the kind of network I would want to steal addresses from. Not in real networks outside the test lab. Low probability some network gear's RFC2544 test suite takes those addresses and makes something fall over, but potentially high impact.

For as much pristine, never before used address space as you need, implement IPv6.

mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.