[atlas] Probe on a /31 or /32 IPv4 network
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Baptiste Jonglez
bjonglez at illyse.org
Fri Aug 15 09:06:44 CEST 2014
On Fri, Aug 15, 2014 at 06:23:09AM +0200, Mikael Abrahamsson wrote: > On Thu, 14 Aug 2014, Baptiste Jonglez wrote: > > >Using a gateway that is not on the same subnet doesn't sound very nice, > >but again, the goal is to avoid wasting precious IPv4 space. > > What router platform are you using upstream from the probe? Doing a /32 per > vlan(ie sharing a larger subnet between different vlans) is perfectly > possible on several routing platforms. We're using Linux. Actually, we are already routing a /32 per VLAN on the router, but up to now, we were also setting up /32 "subnets" on the downstream routers or hosts. > http://tools.ietf.org/html/rfc3069.html Interesting read. It basically amounts to use /32 routes on the router, and a larger subnet (e.g. /24) on hosts, as Philip suggests. This is a bit of a hack when hosts want to talk to each other, but this is mostly ok for the probe (or we can use proxy ARP on the router if it becomes a problem). Thanks for the help, Baptiste -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 819 bytes Desc: not available URL: <https://lists.ripe.net/ripe/mail/archives/ripe-atlas/attachments/20140815/fb4961a7/attachment.sig>
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