© 1999, Cisco Systems, Inc. 3-1 Chapter 10 Controlling Campus Device Access Chapter 3 Connecting the Switch Block © 1999, Cisco Systems, Inc. 3-1

© 1999, Cisco Systems, Inc. BCMSN—3-2 Objectives Upon completion of this chapter, you will be able to perform the following tasks: Provide physical links between devices Configure connectivity to the access layer using Ethernet Configure high-speed access to the distribution layer using Fast Ethernet Provide an secondary high-speed path to a backup distribution switch using Fast Ethernet Enable inter-block communications through links to the core.

© 1999, Cisco Systems, Inc. BCMSN—3-3 Connecting the Switch Block In this chapter, we discuss the following topics: Cable media types Cabling switch block devices Configuring connectivity within the switch block

© 1999, Cisco Systems, Inc. BCMSN—3-4 Connecting the Switch Block (cont.) In this section we discuss the following topics: Cable media types –Ethernet –Fast Ethernet –Gigabit Ethernet Cabling switch block devices Configuring connectivity within the switch block

© 1999, Cisco Systems, Inc. BCMSN—3-5 Problem: Need for More Bandwidth Bandwidth requirement is impacted by the number of users and types of applications

© 1999, Cisco Systems, Inc. BCMSN—3-6 Solution: Ethernet 10BaseT in the Switch Block Ethernet 10BaseT 10-Mbps LAN switching is integrated to the desktop, providing dedicated bandwidth and virtual LAN services to the end stations.

© 1999, Cisco Systems, Inc. BCMSN— Mbps Solution: Fast Ethernet in the Switch Block 100 Mbps Enhances client/server performance across the enterprise Connect directly to Fast Ethernet interfaces on LAN switches which aggregate traffic from 10-Mbps segments 100 Mbps

© 1999, Cisco Systems, Inc. BCMSN—3-8 What Is Fast Ethernet? Built on Ethernet principals Runs at 100 Mbps Uses same frame types, lengths, and formats Still CSMA/CD Same MAC layer, new physical layer 100 Mbps 100 Mbps 10 Mbps 100 Mbps

© 1999, Cisco Systems, Inc. BCMSN—3-9 Increasing FE Performance with Full Duplex In full-duplex mode, 100 Mbps is available in each direction 200 Mbps 100 Mbps

© 1999, Cisco Systems, Inc. BCMSN—3-10 Increasing FE Performance with Autonegotiation Allows devices at each end of a network link to automatically exchange information about the link capabilities I am sending data at 10 Mbps I am sending data at 10 Mbps I am sending data at 100 Mbps I am sending data at 100 Mbps 100 Mbps 10 Mbps

© 1999, Cisco Systems, Inc. BCMSN—3-11 Solution: Gigabit Ethernet in the Switch Block 1000 Mbps 1000 Mbps 1000 Mbps Enhances client/server performance across the enterprise Connects directly to Gbps interfaces on LAN switches which aggregate traffic from 10- or 100-Mbps segments Connects distribution-layer switches in each building with a central campus core

© 1999, Cisco Systems, Inc. BCMSN—3-12 Gigabit Ethernet Protocol Architecture FC-4 Upper Layer Mapping FC-4 Upper Layer Mapping FC-3 Comm Service FC-3 Comm Service FC-2 Signaling FC-1 Encode/Decode FC-1 Encode/Decode FC-0 Interface and Media FC-0 Interface and Media IEEE L LC IEEE CSMA/CD IEEE CSMA/CD IEEE802.3 Physical Layer IEEE802.3 Physical Layer IEEE Ethernet ANSI X3T 11 FibreChannel IEEE 802.3z Gigabit Ethernet IEEE LLC CSMA/CD or Full-Duplex Media Access Control (MAC) CSMA/CD or Full-Duplex Media Access Control (MAC) 8B/10B Encode/Decode Serializer/Deserializer Connector

© 1999, Cisco Systems, Inc. BCMSN—3-13 Subscribing Links Mbps Fast Ethernet 100-Mbps Fast Ethernet 80% Local Traffic 20% Remote Traffic 10-Mbps Ethernet

© 1999, Cisco Systems, Inc. BCMSN—3-14 Subscribing Links (cont.) 100-Mbps Fast Ethernet Equal-Cost Paths Server Mbps Fast Ethernet 80% Local Traffic 20% Remote Traffic 10-Mbps Ethernet

© 1999, Cisco Systems, Inc. BCMSN—3-15 Connecting the Switch Block In this section, we discuss the following topics: Cable media types Cabling switch block devices –Cabling to a console port –Cabling to an Ethernet port Configuring connectivity within the switch block

© 1999, Cisco Systems, Inc. BCMSN—3-16 Connecting to a Console Port 1900 Series Console Port 5000 Series Console Port Console Port

© 1999, Cisco Systems, Inc. BCMSN—3-17 Connecting to an Ethernet Port Ethernet Ports Link State LED

© 1999, Cisco Systems, Inc. BCMSN—3-18 Connecting the Switch Block In this section we discuss the following topics: Cable media types Cabling switch block devices Configuring connectivity within the switch block –Limiting switch access –Uniquely defining switching –Configuring switch remote accessibility –Identifying switch ports –Defining link speed –Maximizing data transmission –Verifying connectivity

© 1999, Cisco Systems, Inc. BCMSN—3-19 Limiting Access to Devices Passwords are used to limit access to the switch

© 1999, Cisco Systems, Inc. BCMSN—3-20 Uniquely Identifying a Device The host or prompt name uniquely identifies each device at the command-line interface Hello, My Name Is: ASW44 Hello, My Name Is: DSW145 Hello, My Name Is: CORE1 Switch(config)#hostname ASW44 ASW44(config)# Switch(enable)prompt DSW145 DSW145(enable) Switch(enable)#prompt CORE1 CORE1(enable) Catalyst 1912 Catalyst 5000 Catalyst 6500

© 1999, Cisco Systems, Inc. BCMSN—3-21 Configuring Switch Remote Accessibility An IP address associates a switch with a management VLAN Management VLAN =

© 1999, Cisco Systems, Inc. BCMSN—3-22 Uniquely Identifying Interfaces/Ports A name or description uniquely identifies an interface or port Port 2/1 Primary Link to ASW41 Interface eth 0/4 PC To ASW41 Port ASW41 Switch#show run Building configuration... Current configuration: ! (text deleted) interface Ethernet 0/4 duplex half description “PC TO ASW44 PORT” DSW145 (enable) show port Port Name Status Vlan Level Duplex Speed Type /1 Prim link to ASW41 connected trunk normal full /100BaseTX

© 1999, Cisco Systems, Inc. BCMSN—3-23 Defining Link Speed Configurable on the Catalyst 2900/4000/5000/6000 series switch Fixed configuration on the Catalyst 1900/2800 series switch Switch#show interface fastethernet 0/26 FastEthernet 0/26 is Enabled Hardware is Built-in 100Base-TX Switch#show interface ethernet 0/4 Ethernet 0/4 is Enabled Hardware is Built-in 10Base-T Switch (enable) set port speed 2/4 100 Port(s) 2/4 speed set to 100Mbps. DSW111 (enable) show port 2/4 Port Name Status Vlan Level Duplex Speed Type /4 connected trunk normal full /100BaseTX

© 1999, Cisco Systems, Inc. BCMSN—3-24 Maximizing Data Transmission Full duplex is the simultaneous action of transmitting and receiving data by two devices

© 1999, Cisco Systems, Inc. BCMSN—3-25 Verifying Connectivity !!!!! Success Rate Is 100 Percent (5/5), Round-Trip min/avg/max 0/4/10/ ms Switch#ping Sending 5, 100-Byte ICMP Echos to , Timeout Is 2 Seconds: The ping command sends a specified number of ICMP echo requests and measures the time the destination device takes to respond to each request

© 1999, Cisco Systems, Inc. BCMSN—3-26 Laboratory Exercise: Visual Objective Fast Ethernet Links Fast Ethernet Links Fast Ethernet Links Fast Ethernet Links Layer 2 Core Switch Switch Block Ethernet Links

© 1999, Cisco Systems, Inc. BCMSN—3-27 Lab Diagram (Text only )

© 1999, Cisco Systems, Inc. BCMSN—3-28 Summary After completing this chapter, you should be able to perform the following tasks: The module design of the campus network design allows for scaling bandwidth Each device in the switch block must be addressable and accessible Assigning an IP address to switch associates that switch with the management VLAN Port speeds are fixed on the Catalyst 1900 and 2800 series switches, but negotiable on the higher-end switches

© 1999, Cisco Systems, Inc. BCMSN—3-29 Review 1.Describe the three major link technologies and where each is most effective in the campus network. 2.List the steps necessary to configure an Ethernet connection on an access switch. 3.List the steps necessary to configure a Fast Ethernet connection between the access and distribution layer devices.

© 1999, Cisco Systems, Inc. BCMSN—3-30 Review (Text Only)