Technical Library

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Cisco Routers

Dedicated Access

LAN-ISDN

Multiple Networks

Scenario One: Router with Multiple Ethernet Ports

Give the first Ethernet port an address on Network 1. Repeat for the second Ethernet port on Network 2. No additional static routes are necessary.

Router#config t
Router(config)#interface Ethernet0
Router(config-if)#ip address E1.E1.E1.1 255.255.255.0
Router(config-if)#interface Ethernet1
Router(config-if)#ip address E2.E2.E2.1 255.255.255.0
Router(config-if)#^Z
Router#wr mem

(Note: E1.E1.E1 refers to your first network number.)

Scenario Two: Two Segments Connected via an Internal Router

We have two networks which are connected via an internal router. If the two networks are remotely linked, each side would have its own router. Network 2 would need connectivity to Network 1 for Internet access. The Internet Router has one IP address and one static route which tells the router how to reach the other segment.

Router#config t
Router(config)#interface Ethernet0
Router(config-if)#ip address N1.N1.N1.1 255.255.255.0
Router(config-if)#ip route N2.N2.N2.0 255.255.255.0 N1.N1.N1.4 1
Router(config)#^Z
Router#wr mem