[db-wg] rfc2770
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Michael Kafka
mika at net-cat.at
Fri Jun 3 09:19:42 CEST 2022
Multicast (also known as a group address in some context) are used as a destination address in packets *from* your server, allowing to reach a group of destinations (the delivery towards the group is another discussion, as Gert discussed). The source IP must still be a global unicast. The 233/8 can not solve IPv4 depletion. MC may not be used as source from your server, neither as a destination to your server. That's why you can't create a route object. Rgds On 2022-06-02 16:08, Max Tulyev via db-wg wrote: > Sure, I know this. Now there is a global lack of IPv4 address space, so > things can be changed. I would like to try. And may be to push some > things globally. > > I do not know any example of 233 net usage like it was designed. Are > there any? > > 02.06.22 16:59, Gert Doering via db-wg пише: >> Hi, >> >> On Thu, Jun 02, 2022 at 04:55:12PM +0300, Max Tulyev via db-wg wrote: >>> May be you know, if you have a 16-bit ASN, you have a /24 IPv4 network >>> reserved for you for multicast purposes. It is >>> 233.asnum-hi-octets.asnum-lo-octets.0/24: >>> https://datatracker.ietf.org/doc/html/rfc2770 >>> >>> My ASN is 29632, so the prefix is 233.115.192.0/24 >>> >>> I would like to start using it (well, for testing purposes now). To do >>> so, I need a route object in the RIPE database. >> >> Multicast networks are not announced in BGP, so, why do you need a route: >> object for? >> >> (These addresses must never be used as a source IP, and for destination >> resolution, a multicast tree needs to be built by MP-BGP, MSDP, PIM) >> >> Gert Doering >> -- NetMaster >> >> > -- NetCaT GmbH, Bennogasse 13/5, 1080 Wien FN 433437 h, Handelsgericht Wien, UID: ATU69635335 GF: Michael Kafka, Georg Kraus
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