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Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide R8.5
78-18133-01
Chapter 7 Configuring VLANs on the ML-Series Card
Configuring IEEE 802.1Q VLAN Encapsulation
ML-Series switching supports up to 254 VLAN subinterfaces per interface. 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. Figure 7-1 shows a network topology in
which two VLANs span two ONS 15310-CLs with ML-Series cards.
Figure 7-1 VLANs Spanning Devices in a Network
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:
Host station
Host station
Host station
Host station
VLAN 10
VLAN 10
VLAN 2
VLAN 10
VLAN 2 VLAN 2
Fast Ethernet 3
ML-Series
ML-Series
124089
Fast Ethernet 1 Fast Ethernet 4
POS 0.10 POS 0. 2
Fast Ethernet 2
Command Purpose
Step 1
ML_Series(config)# bridge
bridge-group
-
number
protocol
type
Assigns a bridge group (VLAN) number and
define the appropriate spanning tree type.
Step 2
ML_Series(config)# interface
type number
Enters interface configuration mode to configure
the interface.
Step 3
ML_Series(config)# interface
type
number.subinterface-number
Enters subinterface configuration mode to
configure the subinterface.
Step 4
ML_Series(config-subif)# encap dot1q
vlan-id
Sets the encapsulation format on the VLAN to
IEEE 802.1Q.
Step 5
ML_Series(config-subif)# bridge-group
bridge-group
-
number
Assigns a network interface to a bridge group.