Dear all, I start a network like 4 host and 1 switches. h1,h2,h3,h4 and s1.
I know the dec_ttl action is for ipv4 packet and openflow 1.1+. So I have finished this command. ovs-vsctl set bridge s1 protocols=OpenFlow10,OpenFlow12,OpenFlow13 And also use -O OpenFlow13 in ovs-ofctl. Like the following line: ovs-ofctl -O OpenFlow13 add-flow s1 table=0,priority=65535,ip,in_port=1,vlan_tci=0x0000,dl_src=9e:60:7c:45:f2:b8,dl_dst=32:a2:19:d3:56:4f,nw_src=10.0.0.1,nw_dst=10.0.0.2,nw_proto=0,nw_tos=0,actions=output:2,dec_ttl Then in h1, I use the command h1 sendip -d dsf -p ipv4 -is 10.0.0.1 -id 10.0.0.2 10.0.0.2 which will send an "ip packet" from h1 to h2. And then in h2, I use this command to listen the port. tcpdump ip host 10.0.0.1 -v But the result is I cannot see any changes of the ttl in the received packet. The ttl value is still 64. How can I change that? Please help. Thank you. Allan -- Research student, final-year undergraduate Extreme Scale Network Computing and service laboratory( http://www.cloud-uestc.cn/cloud-uestc-EN/index.html), School of Computer Science & Engineering, University of Electronic Science and Technology of China( http://www.oice.uestc.edu.cn/en/). Website: http://www.allanjie.ml/
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