We use a hybrid environment, with a physical switch and a virtual switch. We
find the problem in exchanging LLDP between them.
If the solution is linux cooked header,
where I need put this snippet of code?, in what file I need add it? :
#!/usr/bin/python
import os
import socket
import time
from ryu.lib.packet import packet
from ryu.lib.packet import linux
from ryu.lib.packet import lldp
import sys
import dpkt
filename = sys.argv[1]
counter = 0
for ts, _pkt in dpkt.pcap.Reader(open(filename, 'r')):
pkt = packet.Packet(data=_pkt, parse_cls=linux.linuxcooked)
l = pkt.get_protocol(lldp.lldp)
if l:
print counter, l
counter += 1
print "end", counter
Thanks a lot !
________________________________________
De: FUJITA Tomonori <fujita.tomon...@lab.ntt.co.jp>
Enviado: viernes, 29 de agosto de 2014 15:06
Para: MARIA VICTORIA ALVAREZ SIERRA
Cc: ryu-devel@lists.sourceforge.net
Asunto: Re: [Ryu-devel] Assertion Error with LLDP_TLV_SIZE
On Fri, 29 Aug 2014 08:37:26 +0000
MARIA VICTORIA ALVAREZ SIERRA <mariavictoria.alvarezsie...@telefonica.com>
wrote:
>> Can you send the pcap file that crashes the lldp code?
>
> Yes, of course.
Thanks a lot!
But are you sure that this crashed Ryu? I've tried Ryu packet parser
code with this file but succesfully parsed all the packets (including
lldp).
I've attached test code. Looks like you don't use real ethernet
environment (I thought that you use normal ethernet environment) so it
needs linux cooked header support:
https://github.com/fujita/ryu/commits/master
=
#!/usr/bin/python
import os
import socket
import time
from ryu.lib.packet import packet
from ryu.lib.packet import linux
from ryu.lib.packet import lldp
import sys
import dpkt
filename = sys.argv[1]
counter = 0
for ts, _pkt in dpkt.pcap.Reader(open(filename, 'r')):
pkt = packet.Packet(data=_pkt, parse_cls=linux.linuxcooked)
l = pkt.get_protocol(lldp.lldp)
if l:
print counter, l
counter += 1
print "end", counter
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