June 30, 2006
Confidential
Document Number BDTM10001-A05 Standard
BelAir100 User Guide
Layer 2 Network Configuration
Layer 2 Network Configuration
The BelAir100 behaves as a layer 2 switch and transparent bridge without the
need to configure any software features. However, to control and manage the
traffic inherent in a bridge (for example, broadcast and flooding), you can
invoke layer 2 features, such as Virtual LANs (VLANs), that divide traffic among
several sets of users and restrict broadcast to the respective VLANs.
In addition you can create layer 2 tunnels between a BelAir100 and one or
more gateway routers to a core network.
See the following sections for a description of these layer 2 features:
• “BelAir100 Layer 2 Switch Port Assignment” on page 82
• “Using Layer 2 Bridging” on page 82
• “Using Virtual LANs” on page 83
• “Managing Egress Node Traffic” on page 85
• “Using Layer 2 Tunnels” on page 87
BelAir100 Layer 2
Switch Port
Assignment
The following command displays the port assignment and status of the layer 2
switch:
show interface config all
Example
/# show interface config all
Index Name Module IfaceType MTU AdminStat OperStat EncapType
----------------------------------------------------------------------------
Physical:
----------------------------------------------------------------------------
1 eth0 ARM 802.11 1500 Up Up Ethernet V2
2 eth1 BRM1 802.11 1500 Up Up Ethernet V2
5 eth4 LIM ENET 1500 Up Up Ethernet V2
----------------------------------------------------------------------------
Logical:
----------------------------------------------------------------------------
9 default Logical L3IPVLAN 1500 Up Up Ethernet V2
10 vlan44 Logical L3IPVLAN 1500 Up Up Ethernet V2
11 vlan4 Logical L3IPVLAN 1500 Up Up Ethernet V2
Note that the logical interface named
default
corresponds to the unit
management interface. Typically, you should never disable this interface.
Using Layer 2
Bridging
The BelAir100 behaves as a layer 2 switch and transparent bridge where the
traffic from any port can be switched to any other port.