igb on a Nehalem system, buildworld stats

[Mars G Miro]

On Fri, Jan 9, 2009 at 5:15 PM, Jack Vogel <jfvogel at 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