network node droppping dhcp reply packets

asked 2015-10-09 05:37:39 -0500

subhash0628 gravatar image

DHCP request is recieved by DHCP name space and also reply is seen from dhcp namespace. but i dont see the same getting assigned to VM. i observe packet getting dropped at br-tun on network node.

from flow tables on br-tun, i see table-2 is not getting hit which is supposed to hit.

root@controller:/etc/init# ovs-ofctl dump-flows br-tun NXST_FLOW reply (xid=0x4): cookie=0x0, duration=2596.827s, table=0, n_packets=0, n_bytes=0, idle_age=2596, priority=0 actions=drop cookie=0x0, duration=2596.209s, table=0, n_packets=114, n_bytes=38988, idle_age=39, priority=1,in_port=6 actions=resubmit(,3) cookie=0x0, duration=2596.310s, table=0, n_packets=934, n_bytes=177286, idle_age=0, priority=1,in_port=5 actions=resubmit(,3) cookie=0x0, duration=2596.860s, table=0, n_packets=405251, n_bytes=44328820, idle_age=0, priority=1,in_port=4 actions=resubmit(,2) cookie=0x0, duration=2596.794s, table=2, n_packets=0, n_bytes=0, idle_age=2596, priority=0,dl_dst=00:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,20) cookie=0x0, duration=2596.760s, table=2, n_packets=0, n_bytes=0, idle_age=2596, priority=0,dl_dst=01:00:00:00:00:00/01:00:00:00:00:00 actions=resubmit(,22) cookie=0x0, duration=2595.690s, table=3, n_packets=1048, n_bytes=216274, idle_age=0, priority=1,tun_id=0x37 actions=mod_vlan_vid:1,resubmit(,10) cookie=0x0, duration=2596.725s, table=3, n_packets=0, n_bytes=0, idle_age=2596, priority=0 actions=drop cookie=0x0, duration=2596.684s, table=4, n_packets=0, n_bytes=0, idle_age=2596, priority=0 actions=drop cookie=0x0, duration=2596.651s, table=10, n_packets=1048, n_bytes=216274, idle_age=0, priority=1 actions=learn(table=20,hard_timeout=300,priority=1,NXM_OF_VLAN_TCI[0..11],NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],load:0->NXM_OF_VLAN_TCI[],load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],output:NXM_OF_IN_PORT[]),output:4 cookie=0x0, duration=2596.616s, table=20, n_packets=0, n_bytes=0, idle_age=2596, priority=0 actions=resubmit(,22) cookie=0x0, duration=2493.425s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=2493, hard_age=27, priority=1,vlan_tci=0x0001/0x0fff,dl_dst=62:a7:bf:ab:10:74 actions=load:0->NXM_OF_VLAN_TCI[],load:0x37->NXM_NX_TUN_ID[],output:5 cookie=0x0, duration=73.845s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=73, hard_age=0, priority=1,vlan_tci=0x0001/0x0fff,dl_dst=fa:16:3e:8a:f5:0a actions=load:0->NXM_OF_VLAN_TCI[],load:0x37->NXM_NX_TUN_ID[],output:5 cookie=0x0, duration=222.410s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=222, hard_age=39, priority=1,vlan_tci=0x0001/0x0fff,dl_dst=fa:16:3e:46:d4:92 actions=load:0->NXM_OF_VLAN_TCI[],load:0x37->NXM_NX_TUN_ID[],output:6 cookie=0x0, duration=2596.583s, table=22, n_packets=0, n_bytes=0, idle_age=2596, priority=0 actions=drop cookie=0x0, duration=2595.724s, table=22, n_packets=0, n_bytes=0, idle_age=2595, dl_vlan=1 actions=strip_vlan,set_tunnel:0x37,output:5,output:6

sometimes i see the same issue after i switch off and switch on the VM instance.

Please help me for the same.

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