VMware Cloud Community
repa82
Enthusiast
Enthusiast
Jump to solution

Requirement for Stretched Network / Cross VDC Networking

Hi,

we're currently playing arround in a LAB with the new Cross VDC Networking in vCloud Director 9.7.

  • We have two Locations connected with Darkfiber
  • We have two vCenter and two vCloud Director 9.7 Installation (different Management IP Spaces)
  • The Management Networks are connected / routed by an IPSec Connection.
  • Both installations works independently fine, network etc. is "good".

  • We was able to Pair both vCloud Director installations on Provider and Tenant side.
  • We changed the NSX Manager in Site #2 to "secondary" and added it to the "primary".
  • We added the Universal Transport Zone
  • We created a Datacenter group with DC's from both locations and added egress points.
  • We was able to add a stretched network and add some VM's to it.

Everything works so far, on the primary location, we're able to reach the internet from a test VM.

On the "secondary" location, we're able to ping the gateway address from the stretched network and another VM inside the same network on "secondary" site.

but we're unable to reach the internet or the test vm in the other location.

What are the network requirements to get this working? I was unable to find all requirements on the net or in the docs.

Thanks in advance!

0 Kudos
1 Solution

Accepted Solutions
repa82
Enthusiast
Enthusiast
Jump to solution

Hi,

we figured out what the problem was.

the routing between the to VXLAN's was broken, so they was not able to connect to each other.

View solution in original post

0 Kudos
5 Replies
Jauneorange972
Enthusiast
Enthusiast
Jump to solution

Hello,

All steps seems good.

Need maybe to fix the EDGE NSX (secondary site) , i mean the ACL on the FW  ?

0 Kudos
repa82
Enthusiast
Enthusiast
Jump to solution

Hi,

we have a rule which allows all "internal" traffic to go out, seems to be fine too.

for my understanding: The traffic on this L2stretched network is going trough the in VXLAN defined vlan, right?

It's not going trough the management network?

0 Kudos
Jauneorange972
Enthusiast
Enthusiast
Jump to solution

Common ingress or the other ?

0 Kudos
repa82
Enthusiast
Enthusiast
Jump to solution

No, thats clear.

The traffic between the VM's.

we have two VM's on each DC/Site. They can reach each other in the site, but they cannot reach the vm's on the other site.

They're all connected to the same stretched L2.

0 Kudos
repa82
Enthusiast
Enthusiast
Jump to solution

Hi,

we figured out what the problem was.

the routing between the to VXLAN's was broken, so they was not able to connect to each other.

0 Kudos