Hi, Ok.
I am using Mininet to emulate the switches so I am using OVS switches. Do you have hing where I should look at to configure it manually? Best, Clément On 13 March 2015 at 06:51, Wei-Li Tang <[email protected]> wrote: > 2015-03-13 13:25 GMT+08:00 Clément Rault <[email protected]>: >> >> Hi, >> >> Thanks for your answer. >> >> Ok, I will investigate it from the switch side. >> >> What I'm not sure to understand is how I will able to configure this on >> the switch from ryu? Do you have any example of others that have done that >> kind of thing with ryu before? > > Hi, > > It very much depends on your switch's configuration method and I don't know > your switch's capabilities. So AFAIK, no. > > I suggest you trying to configure your switch manually first. Consider doing > it from ryu later. It's not Openflow's matter. > >> Best, >> Clément >> >> - Sent from mobile >> >> On Mar 13, 2015 2:23 AM, "Wei-Li Tang" <[email protected]> wrote: >>> >>> 2015-03-13 0:17 GMT+08:00 Clément Rault <[email protected]>: >>>> >>>> Hi, >>>> >>>> Is there a way to see if a group entry has been used (i.e. if a packet >>>> has been sent to this entry) and which bucket action has been >>>> selected? >>>> >>>> Because I'm experiencing something weird with a group. >>>> >>>> Packets towards 11.0.0.2 (with vlan tag to 1) arrive at switch 6 and I >>>> wrote a group entry to match them. >>>> >>>> curl -X POST -d '{ >>>> "dpid": 6, >>>> "type": "SELECT", >>>> "group_id": 1, >>>> "buckets": [ >>>> { >>>> "weight": 1, >>>> "watch_port": 1, >>>> "actions": [ >>>> { >>>> "type": "OUTPUT", >>>> "port": 1 >>>> } >>>> ] >>>> }, >>>> { >>>> "weight": 1, >>>> "watch_port": 2, >>>> "actions": [ >>>> { >>>> "type": "OUTPUT", >>>> "port": 2 >>>> } >>>> ] >>>> }, >>>> { >>>> "weight": 1, >>>> "watch_port": 3, >>>> "actions": [ >>>> { >>>> "type": "OUTPUT", >>>> "port": 3 >>>> } >>>> ] >>>> }, >>>> { >>>> "weight": 1, >>>> "watch_port": 4, >>>> "actions": [ >>>> { >>>> "type": "OUTPUT", >>>> "port": 4 >>>> } >>>> ] >>>> } >>>> ] >>>> }' http://localhost:8080/stats/groupentry/add >>>> >>>> curl -X POST -d '{ >>>> "dpid": 6, >>>> "cookie": 1, >>>> "cookie_mask": 1, >>>> "table_id": 0, >>>> "idle_timeout": 0, >>>> "hard_timeout": 0, >>>> "priority": 11112, >>>> "flags": 1, >>>> "match":{ >>>> "nw_dst": "11.0.0.2", >>>> "eth_type": 2048, >>>> "vlan_vid": 1 >>>> }, >>>> "actions":[ >>>> { >>>> "type":"GROUP", >>>> "group_id": 1 >>>> } >>>> ] >>>> }' http://localhost:8080/stats/flowentry/add >>>> >>>> But when I inspect with wireshark the packets are not sent to any >>>> outport and I don't understand why. >>>> >>>> I wrote a flow entry to see if I was matching correctly on them: >>>> >>>> curl -X POST -d '{ >>>> "dpid": 6, >>>> "cookie": 1, >>>> "cookie_mask": 1, >>>> "table_id": 0, >>>> "idle_timeout": 0, >>>> "hard_timeout": 0, >>>> "priority": 11113, >>>> "flags": 1, >>>> "match":{ >>>> "nw_dst": "11.0.0.2", >>>> "eth_type": 2048, >>>> "vlan_vid": 1 >>>> }, >>>> "actions":[ >>>> { >>>> "type":"OUTPUT", >>>> "port": 4 >>>> } >>>> ] >>>> }' http://localhost:8080/stats/flowentry/add >>>> >>>> And it worked, after adding this entry all packets were sent to outport >>>> 4. >>>> >>>> So I guess there is a problem with the group that I wrote but I don't >>>> know what... >>>> >>>> >>>> What is the standard behaviour for a select group type? >>>> >>>> From the documentation I understood that it's a round robin mechanism >>>> but when I investigate it it looks like all the packets are always >>>> taking the first bucket (live). >>>> >>>> How can I achieve a round robin behaviour then? I thought that I just >>>> need to put the same weight to each action bucket. >>> >>> >>> Hi, >>> >>> According to page 21, OpenFlow Switch Specification 1.3.4: >>> >>> Optional: select: Execute one bucket in the group. Packets are processed >>> by a single bucket in the group, based on a switch-computed selection >>> algorithm (e.g. hash on some user-configured tuple or simple round robin). >>> All configuration and state for the selection algorithm is external to >>> OpenFlow. >>> >>> So openflow does not help. Check your switch configurations for your >>> needs. >>> > ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Ryu-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ryu-devel
