If there are sufficient compute and I/O resources, an NSX Edge cluster can extend multiple VLAN networks over a single interface using VLAN trunking.īeginning with NSX-T Data Center 3.0, the L2 VPN path MTU discovery (PMTUD) feature is enabled by default. Segments can be connected to either Tier-0 or Tier-1 gateways and use L2 VPN services.Īlso supported is VLAN trunking using an ESX NSX-managed virtual distributed switch (N-VDS). You can extend L2 networks from VLAN to VNI, VLAN to VLAN, and VNI to VNI. VLAN-based and VNI-based segments can be extended using L2 VPN service on an NSX Edge node that is managed in an NSX-T Data Center environment. An L2 VPN session can extend up to 4094 L2 segments. Only one L2 VPN service (either client or server) can be configured for either Tier-0 or Tier-1 gateway.Įach L2 VPN session has one Generic Routing Encapsulation (GRE) tunnel. L2 VPN services are supported on both Tier-0 and Tier-1 gateways. In addition to supporting data center migration, an on-premises network extended with an L2 VPN is useful for a disaster recovery plan and dynamically engaging off-premise compute resources to meet the increased demand. For cloud providers, L2 VPN provides a mechanism to onboard tenants without modifying existing IP addresses used by their workloads and applications. The VMs can run on either VNI-based networks or VLAN-based networks. So, enterprises can seamlessly migrate VMs between network sites. The VMs' IP addresses do not change when they are moved. The extended network is a single subnet with a single broadcast domain, which means the VMs remain on the same subnet when they are moved between sites. NSX-T Data Center and does not have any third-party interoperability. Note: This L2 VPN feature is available only for
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