Hi Hari,

I have reproduced the issue. Please find the setup details below 


Password (root/c0ntrail123)
Controller + TSN 10.87.69.1 
TSN2 10.87.69.4
Agent 10.87.69.2
BMS 10.87.69.3 (Interface p2p1.6)

QFX:10.87.69.124 (root/Embe1mpls)

root@5b11s16:~# ping -I p2p1.6 17.17.17.2
PING 17.17.17.2 (17.17.17.2) from 17.17.17.3 p2p1.6: 56(84) bytes of data.
64 bytes from 17.17.17.2: icmp_seq=1 ttl=64 time=0.662 ms
^C
--- 17.17.17.2 ping statistics ---
4 packets transmitted, 1 received, 75% packet loss, time 3015ms
rtt min/avg/max/mdev = 0.662/0.662/0.662/0.000 ms



Thanks and Regards,
Chhandak 



On 9/6/17, 6:44 PM, "<email address hidden> on behalf of Jeba Paulaiyan" <<email address hidden> on behalf of <email address hidden>> wrote:

>** Also affects: juniperopenstack/r4.0
>   Importance: Undecided
>       Status: New
>
>** Also affects: juniperopenstack/trunk
>   Importance: High
>     Assignee: Hari Prasad Killi (haripk)
>       Status: New
>
>** Changed in: juniperopenstack/r4.0
>   Importance: Undecided => High
>
>** Changed in: juniperopenstack/r4.0
>     Assignee: (unassigned) => Hari Prasad Killi (haripk)
>
>** Changed in: juniperopenstack/r4.0
>    Milestone: None => r4.0.1.0
>
>** Changed in: juniperopenstack/trunk
>    Milestone: r4.0.1.0 => r4.1.0.0-fcs
>
>-- 
>You received this bug notification because you are a member of Contrail
>Systems engineering, which is subscribed to Juniper Openstack.
>https://bugs.launchpad.net/bugs/1715510
>
>Title:
>  EVPN VXLAN: Ping to DNS server IP is failing after first packet
>
>Status in Juniper Openstack:
>  New
>Status in Juniper Openstack r4.0 series:
>  New
>Status in Juniper Openstack trunk series:
>  New
>
>Bug description:
>  Trying with EVPN VXLAN changes for TSN HA (Agent and vrouter updated)
>
>  When pinging from BMS to DNS server IP, ping is failing after the
>  first packet.  In dropstats Flow Queue Limit Exceeded counter is
>  increasing. FLow is stuck in Hold state.
>
>  root@5b11s16:~#
>  root@5b11s16:~# ping -I p2p1.6 1.1.1.2
>  PING 1.1.1.2 (1.1.1.2) from 1.1.1.3 p2p1.6: 56(84) bytes of data.
>  64 bytes from 1.1.1.2: icmp_seq=1 ttl=64 time=0.488 ms
>  ^C
>  --- 1.1.1.2 ping statistics ---
>  4 packets transmitted, 1 received, 75% packet loss, time 3015ms
>  rtt min/avg/max/mdev = 0.488/0.488/0.488/0.000 ms
>
>
>  root@5b11s14:~# dropstats | grep -v " 0$"
>
>  Flow Queue Limit Exceeded     454
>
>  
>  Discards                      687
>  Cloned Original               1374
>
>  Invalid NH                    9
>
>
>  root@5b11s14:~# dropstats | grep -v " 0$"
>
>  Flow Queue Limit Exceeded     464
>
>  
>  Discards                      695
>  Cloned Original               1390
>
>  Invalid NH                    9
>
>  root@5b11s14:~# flow -l
>  Flow table(size 80609280, entries 629760)
>
>  Entries: Created 4 Added 0 Deleted 3 Changed 3 Processed 3 Used Overflow entries 0
>  (Created Flows/CPU: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 0 0)(oflows 0)
>
>  Action:F=Forward, D=Drop N=NAT(S=SNAT, D=DNAT, Ps=SPAT, Pd=DPAT, L=Link Local Port)
>   Other:K(nh)=Key_Nexthop, S(nh)=RPF_Nexthop
>   Flags:E=Evicted, Ec=Evict Candidate, N=New Flow, M=Modified Dm=Delete Marked
>  TCP(r=reverse):S=SYN, F=FIN, R=RST, C=HalfClose, E=Established, D=Dead
>
>      Index                Source:Port/Destination:Port                      Proto(V)
>  -----------------------------------------------------------------------------------
>     226064                1.1.1.3:5610                                        1 (3)
>                           1.1.1.2:0
>  (Gen: 4, K(nh):0, Action:H, Flags:, QOS:-1, S(nh):0,  Stats:81/6804,  SPort 0,
>   TTL 0, Sinfo 172.16.2.1)
>
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