CHAI WAN, Hong Kong -- The Cisco Catalyst 3850 Series is the next generation of enterprise-class stackable access-layer switches that provide full convergence between wired and wireless on a single platform. Here we will learn how to configure IP routing on cisco 3850 switch.

By default, IP routing isdisabled on the switch, and you must enable it before routing can take place.

In the following procedures, the specified interface must be one of these Layer 3 interfaces:

• A routed port: a physical port configured as a Layer 3 port by using the no switchport interface configuration command.

• A switch virtual interface (SVI): a VLAN interface created by using the interface vlan vlan_id global configuration command and by default a Layer 3 interface.

• An EtherChannel port channel in Layer 3 mode: a port-channel logical interface created by using the interface port-channel port-channel-number global configuration command and binding the Ethernet interface into the channel group.

Note The switch does not support tunnel interfaces for unicast routed traffic.

All Layer 3 interfaces on which routing will occur must have IP addresses assigned to them. See the “Assigning IP Addresses to Network Interfaces” section on page 41-7.

A Layer 3 switch can have an IP address assigned to each routed port and SVI. The number of routed ports and SVIs that you can configure is limited to 128, exceeding the recommended number and volume of features being implemented might impact CPU utilization because of hardware limitations.

Note

Configuring routing consists of several main procedures:

• To support VLAN interfaces, create and configure VLANs on the switch or switch stack, and assign VLAN membership to Layer 2 interfaces. For more information, see Chapter 14, “Configuring VLANs.

• Configure Layer 3 interfaces.

• Enable IP routing on the switch.

• Assign IP addresses to the Layer 3 interfaces.

• Enable selected routing protocols on the switch.

• Configure routing protocol parameters (optional).

If you have any confuse for it, you can get more information on www.cisco.com

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