Date: Fri, 9 Jan 2009 18:14:34 +0800 From: "Mars G Miro" <spry@anarchy.in.the.ph> To: "Jack Vogel" <jfvogel@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: igb on a Nehalem system, buildworld stats Message-ID: <f12f408a0901090214x2daafb37ld74836f628cfca8c@mail.gmail.com> In-Reply-To: <2a41acea0901090115q6af9f364qac23a8cce444d27a@mail.gmail.com> References: <f12f408a0901080616t78dded81l979a4ec06de7739f@mail.gmail.com> <2a41acea0901080844y1c2ad632t12aeadfbe9f34d0a@mail.gmail.com> <f12f408a0901081019x2ea4e83i47851fa3ed2a0ae4@mail.gmail.com> <2a41acea0901081033h7db7a1aej8399baf5dcbd270f@mail.gmail.com> <f12f408a0901081050p1a8154c5h19035f399944b3fc@mail.gmail.com> <f12f408a0901090002k4f50472aleb52c63359365232@mail.gmail.com> <2a41acea0901090115q6af9f364qac23a8cce444d27a@mail.gmail.com>
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On Fri, Jan 9, 2009 at 5:15 PM, Jack Vogel <jfvogel@gmail.com> wrote: > [snip] >> >> >> >> If you have a back to back connection to another NIC on Port 0, no >> >> switch, >> >> does >> >> it still autoneg to 100? >> >> >> >> Connected back to back w/ another box w/ a GigE NIC, it now does >> 1000baseTX: >> >> igb0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 >> options=19b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4> >> ether 00:30:48:c5:db:e2 >> inet6 fe80::230:48ff:fec5:dbe2%igb0 prefixlen 64 scopeid 0x1 >> inet 192.168.70.2 netmask 0xffffff00 broadcast 192.168.70.255 >> media: Ethernet autoselect (1000baseTX <full-duplex>) >> status: active >> >> But still not without problems. I hafta ifconfig down/up it several >> times until I can see the other end. W/c is the same for igb1. > > > OK, so you have some switch issue. What do you mean "see the other end", > if its back to back and boots up I assume it gets link, if you have the > address > assigned in rc.conf, and you run tcpdump on the partner do you see the arp > when it comes online, and at that point can the other side ping it? > By 'see the other end' , I meant that even if It says 1000baseTX, i still can't ping the other end, well not really, as I can now see it gots bad chksums: 1. 001691 00:30:48:c5:db:e2 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 60: arp who-has 192.168.70.2 tell 192.168.70.2 1. 511111 00:30:48:c5:db:e2 > 00:30:48:61:d7:f2, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 20346, offset 0, flags [none], proto ICMP (1), length 84) 192.168.70.2 > 192.168.70.1: ICMP echo request, id 14852, seq 0, length 64 000012 00:30:48:61:d7:f2 > 00:30:48:c5:db:e2, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 3034, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->617b)!) 192.168.70.1 > 192.168.70.2: ICMP echo reply, id 14852, seq 0, length 64 1. 001611 00:30:48:c5:db:e2 > 00:30:48:61:d7:f2, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 57773, offset 0, flags [none], proto ICMP (1), length 84) 192.168.70.2 > 192.168.70.1: ICMP echo request, id 14852, seq 1, length 64 000011 00:30:48:61:d7:f2 > 00:30:48:c5:db:e2, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 59591, offset 0, flags [none], proto ICMP (1), length 84, bad cksum 0 (->848d)!) 192.168.70.1 > 192.168.70.2: ICMP echo reply, id 14852, seq 1, length 64 and this is back to back w/ another box w/ a GigE NIC (nfe, w/c has been in production for some time) > Oh, and what is the link partner hardware? > The switch? it's a Dlink 48-Port DGS-1248T GigE switch. Thanks. > Jack > > -- cheers mars
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