Thanks Aaron,
You totally cleared it up. Makes perfect sense now. Thanks again... ________________________________ From: Aaron T. Rohyans [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 12, 2008 3:52 PM To: NT System Admin Issues Subject: RE: Quick Cisco test network question.. Not a dumb question at all. Yes you *would* need something in the interface to make the port live and establish it as a connected interface in the switch's routing table. L2 ports configured as L3 Routed interfaces are nice when you only have 1 subnet and aren't trunking any VLANs - in other words, you'd have to setup separate ports for each subnet you have. Essentially, imagine this scenario as having an actual router (not a switch) with 24 independent interfaces that are *routed* (NOT switched) at L3. This is not to say, however, that you can't have both routed interfaces and SVIs (VLAN Interfaces) running parallel - with multiple hosts (in multiple VLANs) communicating with the SVI through L2 ports. In your situation - I'd go w/ the VLAN interfaces as you're probably trunking more than 1 VLAN across that fiber and will want multiple L2 ports on the 3550 and 2950 to have connectivity to the gateway address. I probably shouldn't have mentioned option 1 as it doesn't necessarily fit your scenario. HTH, Aaron Rohyans, CCIE #21945 (How's this look Z? :-)) IT Coordinator, IDC-USA [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> 317.244.8307 (V) 317.244.4600 (F) ________________________________ From: Chyka, Robert [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 12, 2008 3:04 PM To: NT System Admin Issues Subject: RE: Quick Cisco test network question.. Sorry to sound dumb... if I use option #2 then nothing gets plugged into the actual f0/1 port right? It is just a routable interface? ________________________________ From: Aaron T. Rohyans [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 12, 2008 3:01 PM To: NT System Admin Issues Subject: RE: Quick Cisco test network question.. Two options - VLAN interfaces, or turning your Layer2 ports into Routed interfaces: 1. Switch(config)# ip routing Switch(config)# int vlan 100 Switch(config-if)# ip add 1.1.1.1 255.255.255.0 Switch(config-if)# exit Switch(config)# ip route 0.0.0.0 0.0.0.0 1.1.1.254 2. Switch(config)# ip routing Switch(config)# int fa0/1 Switch(config-if)# no switchport Switch(config-if)# ip add 1.1.1.1 255.255.255.0 Switch(config-if)# exit Switch(config)# ip route 0.0.0.0 0.0.0.0 1.1.1.254 HTH, Aaron Rohyans IT Coordinator, IDC-USA [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> 317.244.8307 (V) 317.244.4600 (F) ________________________________ From: Chyka, Robert [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 12, 2008 2:55 PM To: NT System Admin Issues Subject: Quick Cisco test network question.. We are setting up a test network between 2 buildings. We have 2 strands of fiber that go from the one building into our data center. It is going to be a closed network with no internet access , so it will be isolated from our production environment. I have a cisco 3550 that will be the "core and on the other end we have a cisco 2950. it will be a windows 2008 test environment too, but we have to get the infrastructure in place first. We are going to set routing up on the 3550 (4 different vlans) and will have some servers and some clients on this switch. There will be no gateway out to the internet, totally closed network. I know you have to turn on IP Routing and set a default route, but where do I set up the routable network interface? As a vlan? For instance: Switch(config)# int vlan 100 Description routable network Ip address 192.168.1.1 255.255.255.0 Then route ip 0.0.0.0 0.0.0.0.0 192.168.1.1 Is this right? The switch doesn't seem to like it. Thanks..i have the advanced ip services image on the 3550. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
