Guidelines For Enabling The Vlt Proxy Gateway - Dell S4048–ON Configuration Manual

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Figure 147. Sample Configuration for a VLT Proxy Gateway

Guidelines for Enabling the VLT Proxy Gateway

Keep the following points in mind when you enable a VLT proxy gateway:

Proxy gateway is supported only for VLT; for example, across a VLT domain.

You must enable the VLT peer-routing command for the VLT proxy gateway to function.

Asymmetric virtual local area network (VLAN) configuration, such as the same VLAN configured with Layer 2 (L2) mode on one VLT

domain and L3 mode on another VLT domain is not supported. You must always configure the same mode for the VLANs across the

You must maintain VLAN symmetry within a VLT domain.

The connection between DCs must be a L3 VLT in eVLT format . For more information, refer to the

The trace route across the DCs can show extra hops.

To ensure no traffic drops, you must maintain route symmetry across the VLT domains. When the routing table across DCs is not

symmetrical, there is a possibility of a routing miss by a DC that does not have the route for L3 traffic. Because routing protocols are

enabled and both DCs are in the same subnet, there is no dynamic route asymmetry. But if you configure a static route on one DC and

not on the other, there is asymmetry.

If the port-channel specified in the proxy-gateway command is not a VLT LAG, the configuration is rejected by the CLI.

VLT Proxy Gateway

eVLT Configuration Example