On (2015-08-25 08:46 -0400), Frank Sweetser wrote: Hey,
> > If I recall correctly, the base address of a subnet was originally used as > an alternative broadcast address by some ancient equipment. While it's not > a behavior I'd expect to see actively used in modern equipment, seeing it > handled as a special case as a receiver doesn't surprise me. > > Based on this, it looks like it's handled as a directed broadcast: > > https://www.juniper.net/techpubs/en_US/junose10.3/information-products/topic-collections/swconfig-ip-ipv6/id-25742.html OP said they were punted, not forwarded to LAN. If they behaved by default as if 'directed-broadcast' is enabled, it would be rather serious amplification problem. Directed-broadcast toggle permits the behaviour of flooding WAN arriving packet as L2 bcast to LAN. Typical use case is sending WOL packets over routed internet to LAN. -- ++ytti _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
