How to configure a Cisco Layer 3 switch- Inter. VLAN Routing. Cisco Catalysts switches equipped with the Enhanced Multilayer Image (EMI) can work as Layer 3 devices with full routing capabilities. Example switch models that support layer 3 routing are the 3. On a Layer. 3- capable switch, the port interfaces work as Layer 2 access ports by default, but you can also configure them as “Routed Ports” which act as normal router interfaces. That is, you can assign an IP address directly on the routed port. Moreover, you can configure also a Switch Vlan Interface (SVI) with the “interface vlan” command which acts as a virtual layer 3 interface on the Layer. If you don’t have a Layer. Inter. VLAN routing using a simple Layer. Router (also called Router- on- a- Stick). On this post I will describe a scenario with a Layer. Inter Vlan Routing” device together with two Layer. See the diagram below: Interface Fa. Layer. 3 switch is configured as a Routed Port with IP address 1. Two Vlans are configured on the L3 switch, Vlan. Vlan. 20. For Vlan. SVI with IP address 1. Vlan. 20 an SVI with IP address 1. Cisco Catalysts switches equipped with the Enhanced Multilayer Image (EMI) can work as Layer 3 devices with full routing capabilities. Example switch models that support layer 3 routing are the 3550, 3750, 3560 etc. These two IP addresses will be the default gateway addresses for hosts belonging to Vlan. Vlan. 20 on the Layer. That is, hosts connected on Vlan. L2 switches will have as default gateway the IP address 1. Similarly, hosts connected on Vlan. Traffic between Vlan. Vlan. 20 will be routed by the L3 Switch (Inter. Vlan Routing). Also, all interfaces connecting the three switches must be configured as Trunk Ports in order to allow Vlan. Vlan. 20 tagged frames to pass between switches. Enable Layer 3 routing. Layer. 3- Switch(config) # ip routing! Frame Size (Bytes) Cisco Payload (Bytes) Packets. Header (Bytes) CRTP Header (Bytes) L2. Layer2 header (Bytes) Total Bandwidth. Link aggregation addresses two problems with Ethernet connections: bandwidth limitations and lack of resilience. With regard to the first issue: bandwidth requirements do not scale linearly. Hi, There is only one big diffrence between layer 2 and layer 3 swithces is that we are able to do routing in interanetwork with Layer 3 swithces which is not possible to do with layer 2. Cisco 2950 catalyst swithe is the. Ccna edition 7 lammle todd 1. Table of ContentsCoverTitle PageCopyrightPublishers NoteAcknowledgmentsAbout the AuthorIntroduction Assessment Test Answers to Assessment TestChapter 1.
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