wrong mtu setting = normal problem, normal drop ;) you must have the same mtu on a ptp link, if not fragmentation will fail
On Mon, Jun 29, 2009 at 6:17 AM, Jason Lixfeld <[email protected]> wrote: > Diagram: > > siteA CE > || > +---++---+ > | 7206PE | > +---++---+ > f2/0 (mtu 1500) > || > f0/1 (mtu 1504) > +---++---+ > | ME3400 | > +---++---+ > g0/1 (mtu 1504) > || > g1/1 (mtu 9216) > +---++---+ > | 7609 | > +---++---+ > g7/2 (mtu 9216) > || > g0/0 (mtu 9216) > +---++---+ > | 7301PE | > +---++---+ > || > siteB CE > > I'm getting one-way ICMP over a VC that is terminated on the 7206PE; > meaning ICMP echo requests sourced from siteA CE to siteB CE cannot be seen > on the siteB CE. However, ICMP echo requests sourced from the siteB CE can > be seen on the siteA CE (but the echo reply packest are not seen by siteB > CE). > > I understand that MTU issues would most certainly cause problems if the > packet size was closer to the 1500 byte mark (1474 or there about, > depending, maybe), but would this particular MTU mis-match even cause issues > with such small ICMP packets? > > If MTU wouldn't cause this, then I'm back to square one with trying to > figure out this one-way traffic thing I've got going on here. > > Thanks in advance.. > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
