I'm building a WAN emulation box based on 7.1-beta2-ipfw and dummynet. The config is basically a router-on-a-stick. The server (FBSD rtr) has two nics which connect to two different switches, but both switch ports are in the same untagged interconnected vlan. All the other test boxes in the network are also in the same vlan, but broken into different nets. The different nets are spread across the two nics as primary and alias ip address in different nets. I've been getting "bursts" (maybe 8-20 at a time) of the discard frame messages. Mostly on bce1 but I've seen them on bce0 also. bce1 is probably the busier of the 2 currently. As a shot in the dark, I disabled polling system wide and the messages seemed to have stopped.
thanks jim kernel: bce1: discard frame w/o leading ethernet header (len 4294967292 pkt len 4294967292) ipfw/dummynet/pipes are being used to rate limit traffic by src/dst ip address. The FreeBSD box uses the broadcom bcm5706s gigE interfaces. class=0x020000 card=0x310c103c chip=0x16aa14e4 rev=0x02 hdr=0x00. Based on some readings, I've got the following mods in place: i386 sources running on a 2 x dual core athalon64 cpus, 4 cores active. 8gig of mem available, but only 4 in use kernel i486 and i586 commented out nfs options commented out fbsd 4 and 5 commented out hz=1000 ipfirewall ipfirewall_default_to accept dummynet eisa commented out as well as the older nics sysctl settings kern.polling.enable=1 (setting this to 0 seems to fix the problem, but leaves the cpu's busier) kern.ipc.maxsockbuf=16777216 (not sure this helps much in the case of a rtr) net.inet.ip.forwarding=1 net.inet..tcp.sendbuf_auto=1 net.inet..tcp.sendbuf_max=16777216 net.inet..tcp.recvbuf_auto=1 net.inet..tcp.recvbuf_max=16777216 net.inet.tcp.rfc1323=1 net.link.ether.inet.log_arp_wrong_iface=0 (to suppress the arp messages) _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
