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cEdge devices not sending UDP packets for Control Connections

Sushil93
Level 1
Level 1

Hello Guys,

Good Day !!

c-Edge devices not sending UDP packets for Control Connections while communicating  SD-WAN control controllers: vSmart and vManage.

The control communication happen on UDP ports with vBond but after some random time the connection with vBond auto renew. 

Due to this issue c-Edge devices on-boarding not happen successfully.

Refer below PCAPs for the reference and request you to please help me if anybody have the solution for this: 

cEdge-2#sh mon cap vbond buffer br
----------------------------------------------------------------------------
# size timestamp source destination dscp protocol
----------------------------------------------------------------------------
0 182 0.000000 SRC IP cEdge Interface -> DEST IP vBond 48 CS6 UDP
1 182 1.000992 SRC IP cEdge Interface -> DEST IP vBond 48 CS6 UDP
2 182 2.001999 SRC IP cEdge Interface -> DEST IP vBond 48 CS6 UDP
3 182 3.003998 SRC IP cEdge Interface -> DEST IP vBond 48 CS6 UDP
4 182 4.005005 SRC IP cEdge Interface -> DEST IP vBond 48 CS6 UDP
5 182 5.007003 SRC IP cEdge Interface -> DEST IP vBond 48 CS6 UDP


c-Edge >>>>>>>> vSmart:

cEdge-2#sh mon cap vsmart buffer br
----------------------------------------------------------------------------
# size timestamp source destination dscp protocol
----------------------------------------------------------------------------
0 86 0.000000 SRC IP cEdge Interface -> DEST IP vSmart 48 CS6 ICMP
1 86 4.694016 SRC IP cEdge Interface -> DEST IP vSmart 48 CS6 ICMP
2 86 5.011001 SRC IP cEdge Interface -> DEST IP vSmart 48 CS6 ICMP
3 86 5.011001 SRC IP cEdge Interface -> DEST IP vSmart 48 CS6 ICMP
4 86 10.020004 SRC IP cEdge Interface -> DEST IP vSmart 48 CS6 ICMP

c-Edge >>>>>>>> vManage:


cEdge-2#sh mon cap vmanage buffer br
----------------------------------------------------------------------------
# size timestamp source destination dscp protocol
----------------------------------------------------------------------------
0 86 0.000000 SRC IP cEdge Interface -> DEST IP vManage 48 CS6 ICMP
1 86 0.720016 SRC IP cEdge Interface -> DEST IP vManage 48 CS6 ICMP
2 86 5.726012 SRC IP cEdge Interface -> DEST IP vManage 48 CS6 ICMP
3 86 10.732024 SRC IP cEdge Interface -> DEST IP vManage 48 CS6 ICMP
4 86 15.738020 SRC IP cEdge Interface -> DEST IP vManage 48 CS6 ICMP

But the traffic coming from Controllers to cEdge is properly communicating via UDP ports.

Early response is highly appreciated.

THR

 

3 Replies 3

show <sdwan> control connections-history <<- share this from cedge

MHM

ivances
Level 1
Level 1

Hi Sushil,

Please, share the output of this command and the command that MHM requested: show platform software object-manager f0 statistics

Sushil93
Level 1
Level 1

Hello Guys,

Thanks for your response, the issue found was different and ICMP packets used at  back-end by UDP so this is ideal behavior from c-Edge and the issue is fixed.

Thanks,