Hi, >Do we have to assign the weights for these two buckets as zero.
Yes. "7.3.4.2 Modify Group Entry Message" in OFspec1.3.4 says: The weight field is only defined for select groups, and its support is optional. For other group types, this fields must be set to 0. >In case of fast fail over group type what should be the value for these two >fields. These fields indicate the port and/or group whose liveness controls whether this bucket is a candidate for forwarding. More details are described in "6.5 Group Table Modification Messages" of OFspec1.3.4. On 2015年01月18日 10:52, Padma Jayasankar wrote: > Hi, > To use fast fail over feature, we have to add more than one buckets. Do we > have to assign the weights for these two buckets as zero. If not what should > be the value. Further what does watch_port and watch_group represent. In case > of fast fail over group type what should be the value for these two fields. > Please clarify > > Thanks and Regards, > Padma V > > On Tue, Jan 13, 2015 at 7:52 AM, Yusuke Iwase <[email protected] > <mailto:[email protected]>> wrote: > > Hi Padma, > > On 2015年01月12日 09:08, Padma Jayasankar wrote: > > Hi, > > I want to use fast fail over group type of OpenFlow 1.3. I need > sample flow entries for doing this. According to my knowledge, we have to > change the action as group table and then add an entry in the group table. > but how to specify in the flow table entry.Please clarify. > > Please refer to "OpenFlow protocol API Reference" in the Ryu > documentation. > > http://ryu.readthedocs.org/en/latest/ofproto_v1_3_ref.html#modify-state-messages > > To add an group entry, you can use OFPGroupMod() class. > e.g.) Add fast fail over group type entry. > --------- > def send_group_mod(self, datapath): > ofp = datapath.ofproto > ofp_parser = datapath.ofproto_parser > > port = 1 > actions = [ofp_parser.OFPActionOutput(port)] > > weight = 0 > watch_port = 1 > watch_group = ofp.OFPG_ANY > buckets = [ofp_parser.OFPBucket(weight, watch_port, > watch_group, > actions)] > > group_id = 1 > req = ofp_parser.OFPGroupMod(datapath, ofp.OFPGC_ADD, > ofp.OFPGT_FF, group_id, buckets) > datapath.send_msg(req) > --------- > > > To group action to flow entry, you can use OFPFlowMod() class. > e.g.) Add group action to flow entry. > --------- > def send_flow_mod(self, datapath): > ofp = datapath.ofproto > ofp_parser = datapath.ofproto_parser > > cookie = cookie_mask = 0 > table_id = 0 > idle_timeout = hard_timeout = 0 > priority = 32768 > buffer_id = ofp.OFP_NO_BUFFER > > match = ofp_parser.OFPMatch(in_port=1, > eth_dst='ff:ff:ff:ff:ff:ff') > > group_id = 1 > actions = [ofp_parser.OFPActionGroup(group_id)] > inst = > [ofp_parser.OFPInstructionActions(ofp.OFPIT_APPLY_ACTIONS, > actions)] > > req = ofp_parser.OFPFlowMod(datapath, cookie, cookie_mask, > table_id, ofp.OFPFC_ADD, > idle_timeout, hard_timeout, > priority, buffer_id, > ofp.OFPP_ANY, ofp.OFPG_ANY, > ofp.OFPFF_SEND_FLOW_REM, > match, inst) > datapath.send_msg(req) > --------- > > Thanks > > > > > Thanks and Regards, > > Padma V > > > > > > > > > > > ------------------------------------------------------------------------------ > > New Year. New Location. New Benefits. New Data Center in Ashburn, VA. > > GigeNET is offering a free month of service with a new server in > Ashburn. > > Choose from 2 high performing configs, both with 100TB of bandwidth. > > Higher redundancy.Lower latency.Increased capacity.Completely compliant. > > vanity: www.gigenet.com <http://www.gigenet.com> > > > > > > > > _______________________________________________ > > Ryu-devel mailing list > > [email protected] <mailto:[email protected]> > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > > > > > > > ------------------------------------------------------------------------------ > New Year. New Location. New Benefits. New Data Center in Ashburn, VA. > GigeNET is offering a free month of service with a new server in Ashburn. > Choose from 2 high performing configs, both with 100TB of bandwidth. > Higher redundancy.Lower latency.Increased capacity.Completely compliant. > http://p.sf.net/sfu/gigenet > > > > _______________________________________________ > Ryu-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ryu-devel > ------------------------------------------------------------------------------ New Year. New Location. New Benefits. New Data Center in Ashburn, VA. GigeNET is offering a free month of service with a new server in Ashburn. Choose from 2 high performing configs, both with 100TB of bandwidth. Higher redundancy.Lower latency.Increased capacity.Completely compliant. http://p.sf.net/sfu/gigenet _______________________________________________ Ryu-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ryu-devel
