Nortel Web OS 10.0, Application Manual

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Web OS 10.0 Application Guide
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Chapter 2: VLANs
212777-A, February 2002
Configuring the Local Network
To completely segregate VLAN traffic to its own default gateway, you can configure the local
network addresses of the VLAN. This will ensure that all traffic from VLAN 2 is forwarded to
Gateway 5 and all traffic from VLAN 3 is forwarded to Gateway 6.
Typically, the switch routes traffic based on the routes in the routing table. The routing table
will contain an entry of the configured local network with the default gateway. The route cache
will not contain the route entry. This configuration provides a more secure environment, but
affects performance if the routing table is close to its maximum capacity.
N
OTE
– Web OS allows you to configure up to five local networks.
Configuring Default Gateways per VLAN
Follow this procedure to configure the example shown in Figure 2-6 :
1. Assign an IP address for each router and client workstation.
2. Assign an IP interface for each subnet attached to the switch.
>> /cfg/ip/if 1 (Select IP interface 1 for gateway 5 &
6 subnet)
>> IP Interface 1# addr 10.10.1.1
(Assign IP address for interface 1)
>> IP Interface 1# mask 255.255.255.0
(Assign mask for IF 1)
>> IP Interface 1# broad 10.10.1.255 (Assign broadcast address for IF 1)
>> IP Interface 1# vlan 4
(Assign VLAN 4 to IF 1)
>> IP Interface 1# ../if 2
(Select IP interface 2 for gateway 1)
>> IP Interface 2# addr 10.10.4.40
(Assign IP address for interface 2)
>> IP Interface 2# mask 255.255.255.0
(Assign mask for IF 2)
>> IP Interface 2# broad 10.10.4.255
(Assign broadcast address for IF 2)
>> IP Interface 2# vlan 1 (Assign VLAN 1 to IF 2)
>> IP Interface 2# ../if 3
(Select IP interface 3 for VLAN 2
subnet)
>> IP Interface 3# addr 172.21.2.200
(Assign IP address for interface 3)
>> IP Interface 3# mask 255.255.255.0
(Assign mask for IF 3)
>> IP Interface 3# broad 172.21.2.255
(Assign broadcast address for IF 3)
>> IP Interface 3# vlan 2 (Assign VLAN 2 to IF 3)
>> IP Interface 3# ../if 4
(Select IP interface 4 for VLAN 3)
subnet)
>> IP Interface 4# addr 172.21.3.200
(Assign IP address for interface 4)
>> IP Interface 4# mask 255.255.255.0
(Assign mask for IF 4)
>> IP Interface 4# broad 172.21.3.255
(Assign broadcast address for IF 4)
>> IP Interface 4# vlan 3 (Assign VLAN 3 to IF 4)