Netgear GSM7248R - ProSAFE 48-Port Gigabit L2 Managed Switch with Static Routing Guida All'Installazione
2
VLAN-Definition
VLANs are logical subgroups within a Local Area Network (LAN), which combine user stations,
and network devices into a single unit, regardless of the physical LAN segment to which they are
attached. VLANs allow network traffic to flow more efficiently within subgroups. VLANs use
software to reduce the amount of time it takes for network changes, additions, and moves to be
implemented.
Notes when setting-up VLANs
• A VLAN does not have a minimum number of port
• VLANs work at the OSI Layer 2
• A VLAN can be created per unit, device or via logical connection/combination
• Broadcast and Multicast traffic is transmitted only in the VLAN in which traffic is generated.
• To allow traffic between VLAN a device working at protocol level (Layer 3) is required
GSM7352S
M1
M2
M3
M4
48T
46T
44T
42T
47T
45T
43T
41T
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41T
43T
45T
47T
2
4
6
8
10
12
14
16
18
20
22
24
38
40
42T
44T
46T
48T
26
28
30
32
34
36
Default IP route : 192.168.2.254
Internet
VLAN4
192.168.4.1/24
VLAN3
192.168.3.1/24
VLAN2
192.168.2.1/24
192.168.2.x/24
DG 192.168.2.254
192.168.3.x/24
DG 192.168.3.1
192.168.4.x/24
DG 192.168.4.1
ProSafe VPN Wireless ADSL Gateway
DGFV
338
LOCAL
1
2
3
4
5
6
7
8
10 0
Link/ACT
LINK/ACT
10 0
INTERNET
TEST
MODE L
WLAN
DSL
PWR
192.168.2.254/24
____
VLAN 4: Ports 0/41
– 0/48
PVID = 4
DHCP = 192.168.4.0/24
DHCP = 192.168.4.0/24
____
VLAN 3: Ports 0/21
– 0/28
PVID = 3
DHCP = 192.168.3.0/24
DHCP = 192.168.3.0/24
____
VLAN 2: Ports 0/1
– 0/8
PVID = 2
DHCP = 192.168.2.0/24
DHCP = 192.168.2.0/24
GSM7xxx - Shared access to the Internet across Multiple Routing VLANs using a Prosafe Firewall
DGFV338
Static routes:
192.168,3.0 255.255.255.0 192.168.2.1
192.168,3.0 255.255.255.0 192.168.2.1
192.168.4.0 255.255.255.0 192.168.2.1