Users Guide

interface interface
2. Enable the port.
INTERFACE mode
no shutdown
3. Set the port in Layer 2 mode.
INTERFACE mode
switchport
4. Select the PVLAN mode.
INTERFACE mode
switchport mode private-vlan {host | promiscuous | trunk}
• host (isolated or community VLAN port)
• promiscuous (intra-VLAN communication port)
• trunk (inter-switch PVLAN hub port)
5. Access INTERFACE VLAN mode for the VLAN to which you want to assign the PVLAN interfaces.
CONFIGURATION mode
interface vlan vlan-id
6. Enable the VLAN.
INTERFACE VLAN mode
no shutdown
7. To obtain maximum VLT resiliency, congure the PVLAN IDs and mappings to be identical on both the VLT peer nodes. Set the
PVLAN mode of the selected VLAN to primary.
INTERFACE VLAN mode
private-vlan mode primary
8. Map secondary VLANs to the selected primary VLAN.
INTERFACE VLAN mode
private-vlan mapping secondary-vlan vlan-list
The list of secondary VLANs can be:
• Specied in comma-delimited (VLAN-ID,VLAN-ID) or hyphenated-range format (VLAN-ID-VLAN-ID).
• Specied with this command even before they have been created.
• Amended by specifying the new secondary VLAN to be added to the list.
Proxy ARP Capability on VLT Peer Nodes
The proxy ARP functionality is supported on VLT peer nodes.
A proxy ARP-enabled device answers the ARP requests that are destined for another host or router. The local host forwards the
trac to the proxy ARP-enabled device, which in turn transmits the packets to the destination.
By default, proxy ARP is enabled. To disable proxy ARP, use the no proxy-arp command in the interface mode. To re-enable
proxy ARP, use the
ip proxy-arp command in INTERFACE mode. To view if proxy ARP is enabled on the interface, use the show
config command in INTERFACE mode. If it is not listed in the show config command output, it is enabled. Only nondefault
information is displayed in the
show config command output.
ARP proxy operation is performed on the VLT peer node IP address when the peer VLT node is down. The ARP proxy stops working
either when the peer routing timer expires or when the peer VLT node goes up. Layer 3 VLT provides a higher resiliency at the Layer
Virtual Link Trunking (VLT)
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