Cisco WS-C6506 User Manual

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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 11 Configuring VLANs
Configuring FDDI VLANs on the Switch
Private VLAN Support on the MSFC
These items describe the private VLAN support on the MSFC:
• Enter the show pvlan command to display information about the private VLANs. The show pvlan
command displays information about the private VLANs only when the primary private VLAN is
up.
• Entering the set pvlan mapping or the clear pvlan mapping command on the supervisor engine
generates the MSFC syslog messages. See the following for an example:
%PV-6-PV_MSG:Created a private vlan mapping, Primary 100, Secondary 101
%PV-6-PV_MSG:Created a private vlan mapping, Primary 200, Secondary 201
%PV-6-PV_MSG:Purged a private vlan mapping, Primary 100, Secondary 101
• Enter the interface vlan command to configure the Layer 3 parameters only for the primary private
VLANs.
• On the supervisor engine, you cannot create the isolated or community VLANs using the VLAN
numbers for which the interface vlan commands have been entered on the MSFC.
• The ARP entries that are learned on the Layer 3 private VLAN interfaces are sticky ARP entries (we
recommend that you display and verify the private VLAN interface ARP entries).
• For security reasons, the private VLAN interface sticky ARP entries do not age out. Connecting new
equipment with the same IP address generates a message and the ARP entry is not created.
• Because the private VLAN interface ARP entries do not age out, you must manually remove the
private VLAN interface ARP entries if a MAC address changes.
• You can add or remove the private VLAN ARP entries manually as follows:
obelix-rp(config)# no arp 11.1.3.30
IP ARP:Deleting Sticky ARP entry 11.1.3.30
obelix-rp(config)# arp 11.1.3.30 0000.5403.2356 arpa
IP ARP:Overwriting Sticky ARP entry 11.1.3.30, hw:00d0.bb09.266e by hw:0000.5403.2356
• Some commands clear and recreate the private VLAN mapping as follows:
obelix-rp(config)# xns routing
obelix-rp(config)#
%PV-6-PV_MSG:Purged a private vlan mapping, Primary 100, Secondary 101
%PV-6-PV_MSG:Purged a private vlan mapping, Primary 100, Secondary 102
%PV-6-PV_MSG:Purged a private vlan mapping, Primary 100, Secondary 103
%PV-6-PV_MSG:Created a private vlan mapping, Primary 100, Secondary 101
%PV-6-PV_MSG:Created a private vlan mapping, Primary 100, Secondary 102
%PV-6-PV_MSG:Created a private vlan mapping, Primary 100, Secondary 103
Configuring FDDI VLANs on the Switch
To create a new FDDI VLAN, perform this task in privileged mode:
Task Command
Step 1
Create a new FDDI or FDDI NET-type VLAN. set vlan vlan [name name] type {fddi | fddinet}
[said said] [mtu mtu]
Step 2
Verify the VLAN configuration. show vlan [vlan]

Cisco WS-C6506 Specifications

General

Brand	Cisco
Model	WS-C6506
Category	Switch
Language	English