Hi Srini, In my topology I have an HP switch which I have configured a port to tag several vlans. If I plug my laptop into this port I'm able to see the correct vlan values. Now If I plug a switch into this port that is running the indigo firmware when the controller gets the packets I'm seeing 0xffff as the value instead of the correct value I see with my laptop using wireshark.
(According to your response this should be fine? ) Aaron On Wed, Jan 5, 2011 at 5:31 PM, Srini Seetharaman <[email protected]>wrote: > Hi Aaron > Only pure-OF switches (like Pronto switch with Indigo firmware) will > send the VLAN tag to the controller. With others, the tag is usually > added / stripped by the VLAN configs on the switch. So, you'll not get > to see them. > > Srini. > > On Wed, Jan 5, 2011 at 2:23 PM, Aaron Rosen <[email protected]> wrote: > > Hello, > > > > I'm trying to extract the dl_vlan value from packets on a trunk port. > When I > > plug my computer into the trunk port and run tcpdump I see the correct > > 802.1Q values. Though when I attach this port to my openflow switch > (running > > the pronto firmware) I can't get the correct values at my controller. > > > > In my controller I'm running these few lines of code to print out what's > in > > the packet. > > > > test = extract_flow(packet) > > print test.keys() > > print test.values() > > > > From this: I'm getting the following output > > > > ['dl_type', 'nw_dst', 'dl_vlan_pcp', 'dl_src', 'nw_proto', 'nw_tos', > > 'tp_dst', 'tp_src', 'dl_dst', 'dl_vlan', 'nw_src'] > > [2048, 4294967295, 0, array('B', [0, 27, 177, 2, 100, 167]), 17, 0, 698, > > 698, array('B', [255, 255, 255, 255, 255, 255]), 65535, 2189371010] > > > > I'm getting 65535 for every packet and that is not correct from what I'm > > seeing with tcpdump and not what I'm expecting. > > > > Can someone point out where I'm going wrong. > > > > Thanks, > > > > Aaron > > > > -- > > Aaron O. Rosen > > Masters Student - Network Communication > > 306B Fluor Daniel > > 843.425.9777 > > > > > > _______________________________________________ > > nox-dev mailing list > > [email protected] > > http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org > > > > > -- Aaron O. Rosen Masters Student - Network Communication 306B Fluor Daniel 843.425.9777
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