VXLAN with OSPF vxlan-extensions

AlexDE — Wed, 03 Sep 2025 16:38:26 GMT

Hello, I'm trying to connect to EXOS switches together by useing vxlan an ospf. My goal ist to create a Fabric Attach like connection wich is wan capable, where LLDP would be interrupted. I managed to create the ospf instance that the Switches can see each other and the to create the local tunnel endpoint, but the switches do not learn the remote tunnel endpoint and the vnis. To Achieve the fabric attach like control mechanism i used the function to auto-map nsi/isid/vni together.

These are my configs;

Switch 1 (Switch 2 - IPs vice versa)

enable ospf vxlan-extensions create vlan VX-Transport tag 1000 enable loopback-mode VX-Transport configure vlan 1000 add ports 1 untagged configure virtual-network dynamic on configure vlan 1000 ipaddress 192.168.221.1/24 enable ipforwarding vlan VX-Transport configure virtual-network local-endpoint ipaddress 192.168.221.1 vr VR-Default configure ospf add vlan VX-Transport area 0.0.0.0 enable ospf

If anybody has experience with this feature help would be greatly appreciated.

Re: VXLAN with OSPF vxlan-extensions

Ty_Izzet — Thu, 13 Nov 2025 21:16:15 GMT

Hi Alex,

Trying to get some additional information on this, but have you been able to confirm that the VXLAN tunnel is up or down using the 'show virtual-network remote-endpoint vxlan' command? Also assuming the enable ospf vxlan-extensions and that configure virtual-network dynamic on are enabled/configured on both sides. Has this also been tested with manual configuration without using dynamic on?

How to configure VXLAN between two EXOS devices: https://extreme-networks.my.site.com/ExtrArticleDetail?an=000095900

topic Re: VXLAN with OSPF vxlan-extensions in ExtremeSwitching (EXOS/Switch Engine)

VXLAN with OSPF vxlan-extensions

Re: VXLAN with OSPF vxlan-extensions