Users Guide

The LLDP organizational TLV passes local destination MAC address information to peer VLT domain devices so they can act as
a proxy gateway. To enable proxy gateway LLDP, two configurations are required:
• You must configure the global proxy gateway LLDP to enable the proxy-gateway LLDP TLV.
• You must configure the interface proxy gateway LLDP to enable or disable a proxy-gateway LLDP TLV on specific
interfaces.
• The interface is typically a VLT port-channel that connects to a remote VLT domain.
• The new proxy gateway TLV is carried on the physical links under the port channel only.
• You must have at least one link connection to each unit of the VLT domain.
Following are the prerequisites for Proxy Gateway LLDP configuration:
• You must globally enable LLDP.
• You cannot have interface–level LLDP disable commands on the interfaces configured for proxy gateway and you must
enable both transmission and reception.
• You must connect both units of the remote VLT domain by the port channel member.
• If you connect more than one port to a unit of the remote VLT domain, the connection must be completed by the time you
enable the proxy gateway LLDP.
• You cannot have other conflicting configurations (for example, you cannot have a static proxy gateway configuration).
Proxy Gateway LLDP configuration might not operate properly if one of the following conditions is true:
• Any proxy gateway configuration or LLDP configuration is not working.
VLT Proxy Gateway 856