Hi Dave and Jason,
Here are the outputs of print_10gbe_core_details and tcpdump. It looks to
me that the ARP table is configured properly. Do you still see something
funny in the received packet?
FYI, I'm using the latest versions of the roach software with the
exception of the tcpborphserver, which is
tcpborphserver2-2010-10-18-r3340-parsefix. Also, I compiled this design
using a clone of the "bwrc" CASPER tools.
Thanks,
Sean
------------------------
GBE0 Configuration...
My MAC: 02 02 0A 00 00 14
Gateway: 0 0 0 20
This IP: 10 0 0 20
Gateware Port: 60000
Fabric interface is currently: Enabled
XAUI Status: 0000007E
lane sync 0: 1
lane sync 1: 1
lane sync 2: 1
lane sync 3: 1
Channel bond: 1
XAUI PHY config:
RX_eq_mix: 4
RX_eq_pol: 0
TX_pre-emph: 0
TX_diff_ctrl: 0
ARP Table:
IP: 10. 0. 0. 0: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 1: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 2: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 3: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 4: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 5: MAC: FF FF FF FF FF FF
<snip>
IP: 10. 0. 0. 17: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 18: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 19: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 20: MAC: 02 02 0A 00 00 14
IP: 10. 0. 0. 21: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 22: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 23: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 24: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 25: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 26: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 27: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 28: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 29: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 30: MAC: FF FF FF FF FF FF
IP: 10. 0. 0. 31: MAC: FF FF FF FF FF FF
<snip>
IP: 10. 0. 0.254: MAC: FF FF FF FF FF FF
IP: 10. 0. 0.255: MAC: FF FF FF FF FF FF
------------------------
[r...@arcons controlScripts]# /usr/sbin/tcpdump -xx -i eth1 -c 1
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), capture size 96 bytes
13:53:27.263857 IP 10.0.0.20.60000 > 10.0.0.30.60000: UDP, length 4104
0x0000: ffff ffff ffff 0202 0a00 0014 0800 4500
0x0010: 1024 0000 4000 ff11 5797 0a00 0014 0a00
0x0020: 001e ea60 ea60 1010 0000 0000 0000 0000
0x0030: 0000 0000 0000 0000 0000 0000 0000 0000
0x0040: 0000 0000 0000 0000 0000 0000 0000 0000
0x0050: 0000 0000 0000 0000 0000 0000 0000 0000
1 packets captured
467 packets received by filter
408 packets dropped by kernel
> If you're using the Python wrapper, you can check the status of the ARP
> table and core config easily with a little debug function that prints this
> info to the screen. A correctly-configured 10GbE core should look
> something like this (where I'm using IP addresses around 10.0.0.128):
>
> In [1]: import corr
>
> In [2]: f=corr.katcp_wrapper.FpgaClient('roach030186')
>
> In [3]: f.print_10gbe_core_details('gbe0',arp=True)
> ------------------------
> GBE0 Configuration...
> My MAC: 02 02 0A 00 00 7A
> Gateway: 0 0 0 122
> This IP: 10 0 0 122
> Gateware Port: 8888
> Fabric interface is currently: Enabled
> XAUI Status: 0000007E
> lane sync 0: 1
> lane sync 1: 1
> lane sync 2: 1
> lane sync 3: 1
> Channel bond: 1
> XAUI PHY config:
> RX_eq_mix: 4
> RX_eq_pol: 0
> TX_pre-emph: 0
> TX_diff_ctrl: 0
> ARP Table:
> IP: 10. 0. 0. 0: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 1: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 2: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 3: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 4: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 5: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 6: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 7: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 8: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 9: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 10: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 11: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 12: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 13: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 14: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 15: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 16: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 17: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 18: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 19: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 20: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 21: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 22: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 23: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 24: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 25: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 26: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 27: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 28: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 29: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 30: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 31: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 32: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 33: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 34: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 35: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 36: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 37: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 38: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 39: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 40: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 41: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 42: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 43: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 44: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 45: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 46: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 47: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 48: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 49: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 50: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 51: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 52: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 53: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 54: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 55: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 56: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 57: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 58: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 59: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 60: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 61: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 62: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 63: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 64: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 65: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 66: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 67: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 68: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 69: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 70: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 71: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 72: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 73: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 74: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 75: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 76: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 77: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 78: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 79: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 80: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 81: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 82: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 83: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 84: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 85: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 86: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 87: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 88: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 89: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 90: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 91: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 92: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 93: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 94: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 95: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 96: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 97: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 98: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0. 99: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.100: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.101: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.102: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.103: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.104: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.105: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.106: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.107: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.108: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.109: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.110: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.111: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.112: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.113: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.114: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.115: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.116: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.117: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.118: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.119: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.120: MAC: 02 02 0A 00 00 78
> IP: 10. 0. 0.121: MAC: 02 02 0A 00 00 79
> IP: 10. 0. 0.122: MAC: 02 02 0A 00 00 7A
> IP: 10. 0. 0.123: MAC: 02 02 0A 00 00 7B
> IP: 10. 0. 0.124: MAC: 02 02 0A 00 00 7C
> IP: 10. 0. 0.125: MAC: 02 02 0A 00 00 7D
> IP: 10. 0. 0.126: MAC: 02 02 0A 00 00 7E
> IP: 10. 0. 0.127: MAC: 02 02 0A 00 00 7F
> IP: 10. 0. 0.128: MAC: 02 02 0A 00 00 80
> IP: 10. 0. 0.129: MAC: 02 02 0A 00 00 81
> IP: 10. 0. 0.130: MAC: 02 02 0A 00 00 82
> IP: 10. 0. 0.131: MAC: 02 02 0A 00 00 83
> IP: 10. 0. 0.132: MAC: 02 02 0A 00 00 84
> IP: 10. 0. 0.133: MAC: 02 02 0A 00 00 85
> IP: 10. 0. 0.134: MAC: 02 02 0A 00 00 86
> IP: 10. 0. 0.135: MAC: 02 02 0A 00 00 87
> IP: 10. 0. 0.136: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.137: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.138: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.139: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.140: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.141: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.142: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.143: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.144: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.145: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.146: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.147: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.148: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.149: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.150: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.151: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.152: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.153: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.154: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.155: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.156: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.157: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.158: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.159: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.160: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.161: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.162: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.163: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.164: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.165: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.166: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.167: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.168: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.169: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.170: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.171: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.172: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.173: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.174: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.175: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.176: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.177: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.178: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.179: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.180: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.181: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.182: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.183: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.184: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.185: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.186: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.187: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.188: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.189: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.190: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.191: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.192: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.193: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.194: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.195: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.196: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.197: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.198: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.199: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.200: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.201: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.202: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.203: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.204: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.205: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.206: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.207: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.208: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.209: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.210: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.211: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.212: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.213: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.214: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.215: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.216: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.217: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.218: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.219: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.220: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.221: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.222: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.223: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.224: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.225: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.226: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.227: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.228: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.229: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.230: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.231: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.232: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.233: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.234: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.235: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.236: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.237: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.238: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.239: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.240: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.241: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.242: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.243: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.244: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.245: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.246: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.247: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.248: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.249: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.250: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.251: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.252: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.253: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.254: MAC: FF FF FF FF FF FF
> IP: 10. 0. 0.255: MAC: FF FF FF FF FF FF
> ------------------------
>
> In [5]:
>
>
> BTW, tgtap should now be fully functional from katcp. I've tested it with
> multiple cores and whatnot too. There's a function call in this same
> katcp_wrapper for roach that lets you start (tap_start) and stop
> (tap_stop) it easily. You must keep all identifiers to less than 8
> characters long.
>
> Jason
>
> On 29 Oct 2010, at 01:12, David MacMahon wrote:
>
>> Glad you got it going, Sean! Here's one more tidbit for you...
>>
>> On Oct 28, 2010, at 3:47 PM, [email protected] wrote:
>>
>>> [r...@arcons controlScripts]# /usr/sbin/tcpdump -xx -i eth1 -c 1
>>> tcpdump: verbose output suppressed, use -v or -vv for full protocol
>>> decode
>>> listening on eth1, link-type EN10MB (Ethernet), capture size 96 bytes
>>> 15:36:14.437538 IP 10.0.0.20.60000 > 10.0.0.30.60000: UDP, length 4104
>>> 0x0000: ffff ffff ffff 0202 0a00 0014 0800 4500
>>> 0x0010: 1024 0000 4000 ff11 5797 0a00 0014 0a00
>>> 0x0020: 001e ea60 ea60 1010 0000 0000 0000 0000
>>
>> This packet is using the broadcast Ethernet MAC address for the Ethernet
>> destination address (bytes 0x00-0x05) even though the IP destination is
>> unicast (bytes 0x1e-0x21). I think this indicates a problem with the
>> ARP table of the 10 GbE core inside the FPGA, which I think indicates a
>> problem with tgtap. If this is going through a switch with other
>> devices attached, I think you will definitely want to fix this; if it's
>> just point-to-point and working for you then no big deal.
>>
>> Hope this helps,
>> Dave
>>
>>
>
>
>
