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Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 39 Configuring Private VLANs
Configuring PVLANs
Capture Mode Disabled
Capture VLANs Allowed: ALL
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none
Permitting Routing of Secondary VLAN Ingress Traffic
Note Isolated, community VLANs, and twoway-community VLANs are called secondary VLANs.
To permit routing of secondary VLAN ingress traffic, perform this task:
When you permit routing on the secondary VLAN ingress traffic, note the following:
• The private-vlan mapping interface configuration command only affects PVLAN ingress traffic
that is Layer 3 switched.
• The secondary_vlan_list parameter cannot contain spaces. It can contain multiple comma-separated
items. Each item can be a single PVLAN ID or a hyphenated range of PVLAN IDs.
• Enter a secondary_vlan_list parameter or use the add keyword with a secondary_vlan_list
parameter to map the secondary VLANs to the primary VLAN.
• Use the remove keyword with a secondary_vlan_list parameter to clear the mapping between
secondary VLANs and the primary VLAN.
This example shows how to permit routing of secondary VLAN ingress traffic from PVLANs 303
through 307, 309, and 440 and verify the configuration:
Switch# configure terminal
Switch(config)# interface vlan 202
Switch(config-if)# private-vlan mapping add 303-307,309,440
Switch(config-if)# end
Switch# show interfaces private-vlan mapping
Interface Secondary VLAN Type
--------- -------------- -----------------
vlan202 303 community
vlan202 304 community
vlan202 305 community
vlan202 306 community
vlan202 307 community
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# interface vlan primary_vlan_ID
Enters interface configuration mode for the primary
VLAN.
Step 3
Switch(config-if)# [no] private-vlan mapping
primary_vlan_ID {secondary_vlan_list | add
secondary_vlan_list | remove secondary_vlan_list}
To permit routing on the secondary VLAN ingress traffic,
map the secondary VLAN to the primary VLAN.
You can use the no keyword to delete all associations
from the primary VLAN.
Step 4
Switch(config-if)# end
Exits configuration mode.
Step 5
Switch# show interface private-vlan mapping
Verifies the configuration.