11-30
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
]
