• Isolated port: An isolated port is a port that, in Layer 2, can only communicate with promiscuous ports
that are in the same PVLAN.
• Promiscuous port: A promiscuous port is a port that is allowed to communicate with any other port
type.
• Trunk port: A trunk port carries VLAN traffic across switches:
– A trunk port in a PVLAN is always tagged.
– A trunk port in Tagged mode carries primary or secondary VLAN traffic. The tag on the packet
helps identify the VLAN to which the packet belongs.
– A trunk port can also belong to a regular VLAN (non-private VLAN).
ip local-proxy-arp
Enable/disable Layer 3 communication between secondary VLANs in a private VLAN.
Syntax
[no] ip local-proxy-arp
To disable Layer 3 communication between secondary VLANs in a private VLAN,
use the no ip local-proxy-arp command in INTERFACE VLAN mode for the
primary VLAN.
To disable Layer 3 communication in a particular secondary VLAN, use the no ip
local-proxy-arp
command in INTERFACE VLAN mode for the selected
secondary VLAN.
NOTE: Even after you disable ip-local-proxy-arp (use no ip-local-
proxy-arp) in a secondary VLAN, Layer 3 communication may happen
between some secondary VLAN hosts, until the address resolution protocol
(ARP) timeout happens on those secondary VLAN hosts.
Defaults Layer 3 communication is disabled between secondary VLANs in a private VLAN.
Command
Modes
INTERFACE VLAN
Command
History
Version 8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Related
Commands
private-vlan mode — sets the mode of the selected VLAN to community, isolated,
or primary.
private-vlan mapping secondary-vlan — maps secondary VLANs to the selected
primary VLAN.
show arp — displays the ARP table.
show interfaces private-vlan — displays the type and status of the PVLAN
interfaces.
show vlan private-vlan — displays the PVLANs and/or interfaces that are part of a
PVLAN.
Private VLAN (PVLAN)
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