Users Guide

The LLDP organizational TLV passes local destination MAC address information to peer VLT domain devices so they can act as
the proxy gateway. Two configurations are required to enable Proxy Gateway LLDP:
• Global proxy gateway LLDP configuration to enable this feature
• Interface proxy gateway LLDP configuration to enable/disable proxy-gateway LLDP TLV on particular interfaces
• The interface is typically a VLT port-channel which connects to a remote VLT domain
• The new proxy gateway TLV is carried on the physical links under the port channel only
• There should be at least one link connection to each unit of the VLT domain
Following are the prerequisites for Proxy Gateway LLDP configuration:
• LLDP must be globally enabled
• No interface– level LLDP disable CLIs 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, it must be completed by the time you enable the
proxy gateway LLDP
• You cannot have other conflicting configurations (for example, the no static proxy gateway configuration)
This feature might not operate properly if one of the following conditions is true:
• Any proxy gateway configuration or LLDP configuration is not working
• LLDP packets fail to reach the remote VLT domain devices (due to system down, rebooting, port down or physical link
connection)
Sample Configurations for LLDP VLT Proxy Gateway
Apply the following configurations in the Core L3 Routers C and D in the local VLT domain and C1 and D1 in the remote VLT
domain:
1. Configure proxy-gateway lldp in VLT Domain CONFIG mode.
2. Configure peer-domain-link port-channel <vlt portchannel ID> in VLT Domain Proxy Gateway LLDP mode.
The VLT port channel is the one that connects the remote VLT domain.
Sample Configurations for Static VLT Proxy Gateway
Apply the following configurations in the Core L3 Routers C and D in local VLT domain and C1 and D1 in the remote VLT
domain:
1. Configure proxy-gateway static in VLT Domain CONFIG mode
2. Configure remote-mac-address <mac-address> in VLT Domain Proxy Gateway LLDP mode. Configure the system
mac-addresses of both C and D in C1 and also in D1 in the remote VLT domain and vice versa.
VLT Proxy Gateway 958