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networlddsg
Enthusiast
Enthusiast

About session information from NSX Edge's Active to Standby

hello.

When NSX Edge's HA is switched, do you want to recreate a new session without holding load balance session information?

Or keep it holding?

Which one is correct?

About High Availability

https://docs.vmware.com/en/VMware-NSX-for-vSphere/6.4/com.vmware.nsx.admin.doc/GUID-6C4F0C33-C6DD-43...

For example, NSX Edge HA synchronizes the connection tracker of the statefull firewall, or the statefull information held by the load balancer.

Load balancer and VPN services need to re-establish TCP connection with NSX Edge, so service is disrupted for a short while.

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Sreec
VMware Employee
VMware Employee

If there is a switch over due to whatever reason, TCP session will get reestablished  for VPN&LB . Don't get confused between LB TCP session(Not Retained) and firewall session(Retained)

Cheers,
Sree | VCIX-5X| VCAP-5X| VExpert 6x|Cisco Certified Specialist
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networlddsg
Enthusiast
Enthusiast

Thanks for your comment.

Let me check it.

When NSX Edge is Failover Do the following session information be maintained in NSX Edge of Secandary?

show service loadbalancer session

nsxedge1-0> show service loadbalancer session

L7 Loadbalancer: stopped

-------------------------------------------------------------------- ---------------------

L4 Loadbalancer Statistics:

MAX_CONN ACT_CONN INACT_CONN TOTAL_ CONN

65536 2 32 34

L4 Loadbalancer Current Sessions:

pro expire state source virtual destination

TCP 00:19 TIME_WAIT 10.9.0.161: 64341 10.10.160.75: 80 10.10.160.63: 80

TCP 00:21 TIME_WAIT 10.9.0.161: 64372 10.10.160.75: 80 10.10.160.65: 80

TCP 00:23 TIME_WAIT 10.9.0.161: 64383 10.10.160.75: 80 10.10.160.66: 80

TCP 00:20 TIME_WAIT 10.9.0.161: 64356 10.10.160.75: 80 10.10.160.65: 80

TCP 00:21 TIME_WAIT 10.9.0.161: 64354 10.10.160.75: 80 10.10.160.64: ​​80

TCP 00:21 TIME_WAIT 10.9.0.161: 64360 10.10.160.75: 80 10.10.160.65: 80

TCP 00:24 TIME_WAIT 10.9.0.161: 64399 10.10.160.75: 80 10.10.160.66: 80

TCP 00:21 TIME_WAIT 10.9.0.161: 64364 10.10.160.75: 80 10.10.160.63: 80

TCP 00: 00 CLOSE 10.9.0.161: 64350 10.10.160.75: 80 10.10.160.66: 80

TCP 00:21 TIME_WAIT 10.9.0.161: 64377 10.10.160.75: 80 10.10.160.63: 80

TCP 360: 59 ESTABLISHED 10.9.0.161: 64411 10.10.160.75: 80 10.10.160.66: 80

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