[ovs-dev] Openflow ofp 1.o wireshark plugin
Ben Pfaff
blp at nicira.com
Tue Sep 10 04:33:14 UTC 2013
On Tue, Sep 10, 2013 at 08:23:42AM +0400, Vasiliy Tolstov wrote:
> 2013/9/10 Vasiliy Tolstov <v.tolstov at selfip.ru>:
> >
> > No in both cases thernet frame message have 342 bytes.
>
> This is openflow ethernet frame in packet in
> 0000 ff ff ff ff ff ff 52 54 00 5c cd 3a 08 00 45
> 0010 10 01 48 00 00 00 00 80 11 39 96 00 00 00 00 ff ff
> 0020 ff ff 00 44 00 43 01 34 cb 48 01 01 06 00 e6 39
> 0030 0c 51 00 03 00 00 00 00 00 00 00 00 00 00 00 00
> 0040 00 00 00 00 00 00 52 54 00 5c cd 3a 00 00 00 00
> 0050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>
> This is normal dhcp message
> 0000 ff ff ff ff ff ff 52 54 00 5c cd 3a 08 00 45 10
> 0010 01 48 00 00 00 00 80 11 39 96 00 00 00 00 ff ff
> 0020 ff ff 00 44 00 43 01 34 cb 4b 01 01 06 00 e6 39
> 0030 0c 51 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0040 00 00 00 00 00 00 52 54 00 5c cd 3a 00 00 00 00
> 0050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0090 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0100 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0110 00 00 00 00 00 00 63 82 53 63 35 01 01 37 07 01
> 0120 1c 02 03 0f 06 0c ff 00 00 00 00 00 00 00 00 00
> 0130 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0150 00 00 00 00 00 00
The differences between these messages are different dhcp xids
(0x0134cb48 versus 0x0134cb4b) and, if I'm counting correctly, different
dhcp yiaddrs. I see no other differences other than the first frame
being cut off after 128 bytes. That is undoubtedly because you did not
tell the switch to send more than 128 bytes, which is the default.
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