Networking with 2 VLANs and Router

[dadamsjrsnoopy]

I am on page 198 of the Official Cisco Certification Guide for CCNA Routing and Switching ICND2 200-105.

I am using actual hardware and my attachment shows how I am going to set up my hardware.

My question is SW1, 3 and 4 each have two VLAN's each.  Wouldn't this require TWO network connections between the router and the switch since the VLANs are on separate networks.

Example specific: if SW1 has VLAN 11 with IP range 10.1.1.1-126/25 and VLAN 12 with IP range 10.1.1.129-254, I can't think of any way a single connection between the switch and the router could connect to both VLANs (unless I back up and do a Router-on-a-Stick?)  I think Router-on-a-Stick is covered later . . . .

David Adams

Mobile, AL

[balaji.bandi]

Depends on requirement and device, it can also be trunk between Switche and router using single link allow 2 VLANs, you can also have 2 Seperate links as Point to Point links.

[Martin L]

Usually Router-on-a-Stick is preferred as routers have fewer ports. my 2800 ISR router has only 2 FastEthernet ports. ROAS interface must be 100 Mbps or faster and do trunking.
Router-on-a-Stick interface can handle multiple different vlans.