Niels and all, this means that: - a unicast frame coming with a DA not in the arp table is discarded and "L3 incompletes" incremented - a multicast frame for a group address not subscribed is also discarded and "L3 incompletes" incremented Thanks, Bit.
On Fri, 2008-06-13 at 14:41 +0200, Niels Bakker wrote: > * [EMAIL PROTECTED] (Bit Gossip) [Fri 13 Jun 2008, 14:13 CEST]: > >we are experiencing a constant presence of "L3 incomplete" on a 1 Gige > >PIC. This is ~1 every 5 mins. Any idea what can be the reason? > > You didn't search the archives, did you? > > > >The Junos doc says "This counter increments when the incoming packet > >fails Layer 3 (usually IPv4) checks of the header. For example, a frame > >with less than 20 bytes of available IP header would be discarded and > >this counter would increment." > >This means that L2 is ok so also physical layer is ok? > > Ethernet interfaces in Juniper routers work in cut-through mode, > therefore a frame that fails DA check (e.g. an unknown unicast frame > flooded by the switch) is counted again as L3 incomplete. This is a > known limitation/bug/documentation incompleteness. > > > -- Niels. > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp