Accton Technology 1000BASE-LX Guide d'installation télécharger pdf (Page 32)

2-6

Network Planning

Using Layer 3 Routing

VLANs can significantly enhance network performance and security. However, if you

use conventional routers to interconnect VLANs, you can lose most of your

performance advantage. These Gigabit Ethernet Switches are routing switches that

provide wire-speed routing, which allows you to eliminate your conventional IP

routers, except for a router to handle non-IP protocols and a gateway router linked to

the WAN. Just assign an IP address to any VLANs that need to communicate. The

switches will continue to segregate Layer 2 traffic based on VLANs, but will now

provide inter-VLAN connections for IP applications. The switches will perform IP

routing for specified VLAN groups, a directly connected subnetwork, a remote IP

subnetwork or host address, a subnetwork broadcast address, or an IP multicast

address.

Figure 2-5 IP Routing for Unicast Traffic

IP Network 1

R&D

VLAN 1

VLAN 2

Testing

IP Network 2

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Accton Technology 1000BASE-LX Guide d'installation Page 32