page 114 OmniSwitch AOS Release 7 Network Configuration Guide March 2011
Quick Steps for Configuring IP Forwarding
Using only IP, which is always enabled on the switch, devices connected to ports on the same VLAN are
able to communicate at Layer 2. The initial configuration for all Alcatel-Lucent switches consists of a
default VLAN 1. All switch ports are initially assigned to this VLAN. If additional VLANs are not config-
ured on the switch, the entire switch is treated as one large broadcast domain, and all ports receive all traf-
fic from all other ports.
Note. The operational status of a VLAN remains inactive until at least one active switch port is assigned to
the VLAN. Ports are considered active if they are connected to an active network device. Non-active port
assignments are allowed, but do not change the operational state of the VLAN.
To forward packets to a different VLAN on a switch, you must create a router interface on each VLAN.
The following steps show you how to enable IP forwarding between VLANs “from scratch”. If active
VLANs have already been created on the switch, you only need to create router interfaces on each VLAN
(Steps 5 and 6).
1 Create VLAN 1 with a description (e.g., VLAN 1) by using the vlan command. For example:
-> vlan 1 name “VLAN 1”
2 Create VLAN 2 with a description (e.g., VLAN 2) by using the vlan command. For example:
-> vlan 2 name “VLAN 2”
3 Assign an active port to VLAN 1 by using the vlan members untagged command. For example, the
following command assigns port 1 on slot 1 to VLAN 1:
-> vlan 1 members port 1/1 untagged
4 Assign an active port to VLAN 2 by using the vlan members command. For example, the following
command assigns port 2 on slot 1 to VLAN 2:
-> vlan 2 members port 1/2 untagged
5 Create an IP router interface on VLAN 1 using the ip interface command. For example:
-> ip interface vlan-1 address 171.10.1.1 vlan 1
6 Create an IP router interface on VLAN 2 using the ip interface command. For example:
-> ip interface vlan-2 address 171.11.1.1 vlan 2
Note. See Chapter 4, “Configuring VLANs.” for more information about how to create VLANs and
VLAN router interfaces.
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