Configuring Ieee 802.1Q Vlan Encapsulation; Figure 8-1 Vlans Spanning Devices In A Network - Cisco ONS 15454 SDH Configuration Manual

Configuring IEEE 802.1Q VLAN Encapsulation

ML-Series switching supports up to 900 VLAN subinterfaces per card (for example, 200 VLANs on four
interfaces uses 800 VLAN subinterfaces). A maximum of 255 logical VLANs can be bridged per card
(limited by the number of bridge-groups). Each VLAN subinterface can be configured for any VLAN ID
in the full 1 to 4095 range.
ONS 15454s with ML-Series cards.
Figure 8-1
Fast Ethernet 1
Fast Ethernet 2
Configuring IEEE 802.1Q VLAN Encapsulation
You can configure IEEE 802.1Q VLAN encapsulation on either type of ML-Series card interfaces,
Ethernet or Packet over SONET/SDH (POS). VLAN encapsulation is not supported on POS interfaces
configured with HDLC encapsulation.
The native VLAN is always VLAN ID 1 on ML-Series cards. Frames on the native VLAN are normally
transmitted and received untagged. On an trunk port, all frames from VLANs other than the native
VLAN are transmitted and received tagged.
To configure VLANs using IEEE 802.1Q VLAN encapsulation, perform the following procedure,
beginning in global configuration mode:
Command
Step 1
Router(config)# bridge bridge-group - number
protocol type
Step 2
Router(config)# interface type number
Step 3
Router(config-if)# no ip address
Step 4
Router(config)# interface type
number.subinterface-number
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
8-2
Figure 8-1 shows a network topology in which two VLANs span two
VLANs Spanning Devices in a Network
Host station
VLAN 10
POS 0.10 VLAN 10
VLAN 2
VLAN 2
Host station
Host station
VLAN 10
Fast Ethernet 4
POS 0. 2
Fast Ethernet
VLAN 2
Host station
Purpose
Assigns a bridge group (VLAN) number and
define the appropriate spanning tree type.
Enters interface configuration mode to configure
the interface.
Disables IP processing.
Enters subinterface configuration mode to
configure the subinterface.
Chapter 8 Configuring VLANs
3