config-if)#ip address 10.10.10.1 255.255.255.0 On Nexus 7000 switches, the ports default to routed mode. To make them switchports, issue the switchport interface command: NX-7K-1 (config)# int e8/1-2 NX-7K-1 (config-if-range)# switchport Chapter 16: Multilayer Switches Ethernet ports on routers tend to be expensive, and they don't offer very good port density. The addition of switch modules, which provide a few interfaces, has improved their port densities, but nothing beats the flexibility of a multilayer switch when it comes to Ethernet. Watch out when using switches as routers. I once designed a nationwide MPLS network and, since all the handoffs were Metro Ethernet, decided that we could save some money by using existing 3750s for termination at the branches. Everything went great until I tried to configure low- latency queuing (LLQ) for QoS. Since switches aren't routers, they usu- ally don't support WAN-type QoS, but rather LAN-type CoS. The configuration commands for LLQ weren't supported on the 3750. I was out of luck and had to go ask for more hardware late in the project. Configuring SVIs Switch virtual interfaces are configured differently depending on the switch platform and operating systems installed. Let's take a look. IOS (4500, 6500, 3550, 3750, etc.) Here is the output of the command show ip interface brief from a 3750: 3750-IOS#sho ip int brief Interface IP-Address OK? Method Status Protocol Vlan1 unassigned YES NVRAM administratively down down GigabitEthernet1/0/1 unassigned YES unset GigabitEthernet1/0/2 unassigned YES unset GigabitEthernet1/0/3 unassigned YES unset [ text removed --] GigabitEthernet1/0/47 unassigned YES unset GigabitEthernet1/0/48 unassigned YES unset GigabitEthernet1/0/49 unassigned YES unset GigabitEthernet1/0/50 unassigned YES unset GigabitEthernet1/0/51 unassigned YES unset GigabitEthernet1/0/52 unassigned YES unset Port-channel1 unassigned YES unset The first interface is a switched virtual interface for VLAN 1. This SVI cannot be re- moved on a 3750, as it is used for 