Layer 3; Routing Between Lans And To The Internet - NETGEAR GS724Tv4 User Manual

The Netgear GS724Tv4 smart switch is level 3 device. In the ISO stack, level 3 is the Network Layer
which is concerned with movement of network data between networks. To do this, the networks, which
are VLANs on the GS724 switch, are assigned TCP/IP addresses just like the individual devices con-
nected to the ports which from the VLANs.
The network containing the switch cannot be routed. Thus if the switch address is 192.168.23.105,
then the network 192.168.23.x cannot be routed.
Layer 3 capability on the switch

3.1 Routing between LANs and to the Internet

Two LANs, each having different network addresses, are to be able to use the devices on their LAN and
also the other LAN. Each of those LANs is to be implemented as a VLAN on the switch. Further, all
members of each LAN are to have Internet access through a router on one of those VLANs. In effect, the
two LANs are to be joined into one LAN.
VLAN−A−12 192.168.14.1
192.168.14.31
NAS
g1
printer
wireless network
Figure 3.1 shows the arrangement. Internet access is to be through the Internet router with address 192.
168.8.244. This router is connected to the switch by the wireless extender at address 192.168.8.240
through a 2.4GHz wireless network. The 192.168.14.1 and 192.168.8.1 are gateway addresses for
switch
192.168.14.107 192.168.14.9
PC 2
g2 g7
Figure 3.1: Routing between two then out onto the Internet
VLAN−B−22
192.168.8.240
wireless extender
g23
192.168.8.244
Internet
gateway
3
Chapter

Layer 3

192.168.8.1
192.168.8.7
PC 1
g19
20