3.1. Routing between LANs and to the Internet
each of the two LANs. VLAN-A-12 and VLAN-B-22 are names assigned to the network but those names
appear to have no influence on the handling of the VLANs by the switch.
3.1.1
Implementation
This design is implemented by routing VLANs and a default gateway through the Internet router. The
address of the switch was
192.168.10.60
which was not on the VLANs which were to be created.
Routing VLANs are setup using a different mechanism on the GS724Tv4 switch than that used to setup
standard VLANs. The switch menu sequwnce:
Routing
→
VLAN
→
VLAN Routing Wizard
brought up the
VLAN Routing Wizard
display. The value 12 was typed into the
Vlan ID
field. This
was an arbitrary selected value. Then value
192.168.14.1
was typed into the
IP Address
field.
This
192.168.14.1
was the address for the switch to use as the gateway for the VLAN having the ID
of 12. Next the value
255.255.255.0
was typed into the
Network Mask
field. Finally, the
Unit 1
text was clicked to bring up the Ports list with 26 items. From Figure 3.1, ports 1, 2, and 7 were used on
VLAN 12. So the entries under Ports 1, 2, and then 7 were clicked until a U appeared. Each port was to
be an untagged member of the VLAN. Once this was done, the
APPLY
button in the bottom right-hand
corner of the screen was clicked.
The
APPLY
button both saves the previously entered VLAN information in the switch for subsequent
routing use and also brought up another
VLAN Routing Wizard
display. Into this disply the
Vlan
ID
was given the value 22, the
IP Address
was assigned the value
192.168.8.1
, and the
Network
Mask
was assigned as
255.255.255.0
. Ports 19 and 23 were assigned as Untagged members of this
VLAN. The
APPLY
button was again clicked.
Routing between VLANs 12 and 22 had now been setup. The routing configured was displayed using
the menu sequence:
Routing
→
Routing table
which brought up the
Route Configuration
display. The
Route Status
part of that display
showed to routing which had been setup.
The Internet access was setup as the default gateway for the routing VLANs. This was done using the
Configure Routes
part of the
Route Configuration
display, the
Route Status
part of which
showed the VLAN routes which had been setup. From the
Static
and
DefaultRoute
options avail-
able under the
Route Type
label, the
DefaultRoute
was selected. Then the value
192.168.8.244
was typed into the
Next Hope IP Address
field. This is the network address of the Internet router.
When the
APPLY
button was clicked, an entry in the
Route Status
part of the display appeared de-
noting this route.
An option was to apply the VLAN labels of Figure 3.1 to the routing VLANs implemented on the switch.
This was done by considering the routing VLANs as normal VLANs. The switch menu sequence:
Switching
→
VLAN
→
Basic
→
VLAN Configuration
produced the
VLAN Configration
screen listing all VLANs on the switch. First VLAN 12 was la-
belled. The box next to 12 under the VLAN ID heading was clicked. This put a tick into that box, colour
highlighted the line in the listing, and entered 12 in the
VLAN ID
field at the top of the table. The label
VLAN-A-12
was then typed into the
VLAN Name
field and the
APPLY
button at the right-hand bottom
of the screen clicked. That name, together with the ID of 12 appeared in the configuration listing. This
process was repeated for VLAN 22 using the label
VLAN-B-22
. Such labels are only of use to describe
the VLANs on the switch, but are not used by the switch in its operation.
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