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Expressway Edge - Crashes with SYN Flooding on port 7001

Dears, 

I recently build a collaboration edge for MRA usages. All are working as expected. I was having good days. But suddenly my expressway edge is getting crashed and not responding. I can't even ping the expressway edge IP address. when I logged into vsphere and check the console, I found the message - TCP: request_sock_TCP: Possible SYN flooding on port 7001. sending cookies 

 

I have to reset the expressway VM instance to bring up the edge server every time the issue occurs. also noticed below event entry in the expressway edge server

 

2019-09-26T09:46:30.550+01:00kernel: #PF error: [normal kernel read fault]
2019-09-26T09:46:30.550+01:00kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000008

 

any help will be appreciated. 

 

Regards,

Shalid

2 Replies 2

Apologies guys,

I believe i got solution for my issue. it seems to be a bug
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq39993/?rfs=iqvred
Let me upgrade and see if it resolve.

I am experiencing the same problem - did the upgrade solve the problem? 


@Shalid Kurunnan Chalil wrote:
Apologies guys,

I believe i got solution for my issue. it seems to be a bug
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq39993/?rfs=iqvred
Let me upgrade and see if it resolve.