Cisco Catalyst 4500: Group 4

Cisco catalyst 4500

Group 4

Cisco Catalyst 4500

Contents

1

Overview

2

Hardware

3

Feature

4

Design guide

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Cisco Catalyst 4500

1 – Over View Multitiered Networks: high-capability modular switch series can play multiple roles in the network such as access, distribution, and core. Secure unified communication: PoE, Inteligent services, Scalability Resiliency: Hardware resiliency, Software resiliency, Extensive security Simplified operation  Deployment flexibility

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Cisco Catalyst 4500

1 – Over View

Investment protection: Backware and forward compatibility, Investment enhancement, IPv4 & IPv6 Layer 3 Campus Backbone Minimize Spanning Tree and Use Routing Protocols Server Farm Attached to Campus Backbone 4

Cisco Catalyst 4500

2 – Hard Ware

Business Resiliency

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Cisco Catalyst 4500

2 – Hard Ware

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Cisco Catalyst 4500

Differences Between Catalyst 4500 Series Modular and FixedConfiguration Switches

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Cisco Catalyst 4500

2- Hard ware  Core Switches  Cisco Catalyst 4506 or 4507R Switch with Supervisor-IV

 Distribution Switches  Cisco Catalyst 4503 Switch with Supervisor-IV

 Access Switches  Cisco Catalyst 4503 Switch with Supervisor-II-Plus-TS  Cisco Catalyst 4506 with Supervisor-II-Plus  Cisco Catalyst 3750 and 3550 Series

 Server Farm Access Switches  Cisco Catalyst 4948

 Additional Network Elements    

Cisco ISR (for WAN connectivity and firewall function) Cisco IP Phones Cisco Wireless Access Points Cisco CallManager 8

Cisco Catalyst 4500

3 - Feature  Scalability  Allows network growth by adding new line cards  Support from 64 Gbps to 136 Gbps switching capacity and 96 to 384 Ethernet ports in a single Chassis  Support up to 32,000 to 55,000 Unicast MAC entries and 16,000 Multicast MAC entries simultaneously  Supervisor cards are interchanged to enable further switching robustness  PoE: support for a broad range of PoE end device, incl 802.11n access point & up to 30W PoE per port. 9

Cisco Catalyst 4500

3 - Feature Scalability  10/100/1000 (BaseT) port density—12 (on the Supervisor), 60 with one line card (12 on the supervisor and 48 on the line card), 108 with two line cards (12 on the supervisor and 48 on each line cards).  PoE port density—12 (on the supervisor), 60 with one line card (12 on the supervisor and 48 on the line card), 108 with two line cards (12 on the supervisor and 48 on each line card). (With PoE power supply)  Uplink GigE (Optical) port density—8 on the supervisor (additional ports can be added using line cards)  Switching and forwarding capacity—64 Gbps and 48 million packets per second layer-2 through Layer 4 switching

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Cisco Catalyst 4500

3 - Feature  High Feature Capacity  Scalability of these intelligent network services is made possible with dedicated specialized resources known as ternary content addressable memory (TCAM). Ample TCAM resources (up to 192,000 entries) enable “high feature capacity,” which provides wire-speed routing/switching performance with concurrent provisioning of services such as QoS and security. This helps ensure scalability for today’s network requirements with ample room for future growth.

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Cisco Catalyst 4500

3 - Feature  Resiliency  Harware resiliency: All critical components, such as supervisors, power supplies, fans, are redundant.  Software resiliency: Subsecond supervisor switchover (SSO) and Cisco In Service Software Upgrade (ISSU) occur without drop IP calls  Extensive security feature: Network disruptions from security threats are minimized

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Cisco Catalyst 4500

3 - Feature  High Availability     

In Service Software Upgrade (ISSU) None-Stop Forwarding with Stateful Swithover (NFS/SSO) Control Plane Policing (CoPP) Hot Swappable Line cards High Feature Capacity

 Security  Access Security (Port Security, ACL, IEEE 802.1x, DHCP Snooping, DAI, IP Source Guard) on Access Switches  Access Control Lists (PACL, VACL, RACL) on access and core/distribution switches

 Manageability and Ease of use  Auto QoS

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Full Image In-Services Software Upgrade (ISSU)

Cisco Catalyst 4500

NSF/SSO  Active/standby SUP are synchronized at all times  Rapid SUP switchover in case of failure (<150ms)  No interruption to packet forwarding  Protection from HW/SW failure  Layer 2 = Stateful Switchover (SSO)  Layer 3 = Non stop Forwarding (NSF/SSO)

Cisco Catalyst 4500

Cisco Catalyst 4500

3 - Feature Security Security feature

Functional Description

Port Security

Restrict input to an interface by limiting and identifying MAC addresses of the workstations that are allowed to access the port.

ACL

ACLs allow a user to specify Access lists to filter traffic on a per Port, VLAN or IP Routed interface basis.

IEEE 802.1x

IEEE 802.1x is a client-server-based access control and authentication protocol that restricts unauthorized devices from connecting to a LAN.

DHCP Snooping and Option-82

DHCP snooping is a DHCP security feature that provides security by filtering un-trusted DHCP messages and by building and maintaining a DHCP snooping binding table. An un-trusted message is a message that is received from outside the network or firewall and that can cause traffic attacks within the network. The Option-82 allows the access switches to add the origination port ID of the switch on the DHCP request to the DHCP server.

DAI

Dynamic ARP inspection (DAI) uses the binding information that is built by DHCP snooping to enforce the advertisement of bindings to prevent “man-in-the-middle” attacks. These attacks can occur when an attacker intercepts and selectively modifies communicated data to masquerade as one or more of the entries in a communication association. DAI adds an extra layer of security to ARP inspection by verifying that the ARP packet’s MAC address and IP address match an existing DHCP snooping binding in the same VLAN.

IP Source Guard

IP source guard provides per port IP traffic filtering of the assigned source IP addresses by binding IP address to ports.

PVLAN

Allows multiple VLANs with Layer 2 isolation to exist within a single subnet. Provides security by preventing access to an entire network through a single server; also can save address space. 16

Cisco Catalyst 4500

3 - Feature Cost Effectiveness  Support various types of network connectivity  Upgrade the Supervisor Engines while reusing all the existing line cards instead of a forklift upgrade of the whole chassis.  The Supervisor and Line cards are also shared across the various form factors of the Cisco Catalyst 4500 Series Switches.

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Cisco Catalyst 4500

Server Farm Attached to Campus Backbone

A server farm consists of a logical group of networked servers that are usually housed in one location The server farms require high availability  The Layer 2 design requires spanning tree to avoid flooding loops  Root Guard, BackboneFast, UplinkFast, and LoopGuard needs should be considered for the network design and implementation 18

Cisco Catalyst 4500

4.- Layer 3 Campus Backbone The backbone layer is typically a collapsed core and distribution Use the Layer 3 protocols such as HSRP, IGP, and load balancing. Limits the flooding domain, eliminates spanning tree topologies

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Cisco Catalyst 4500

4 – Design Guide The standard Cisco network architecture is a multitiered model:  Access layer  Distribution layer  Core layer

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Cisco Catalyst 4500

4-Design Guide: Minimize Spanning Tree and Use Routing Protocols

Help avoid broadcast loops and flooding in the campus network The Layer 2 flooding domain and VLANs are kept smaller for predictable and manageable network performance Use Per VLAN Spanning Tree [PVST] or Multiple Spanning Tree [MST] to optimize network link utilization

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Cisco Catalyst 4500

4.2.3-Minimize Spanning Tree and Use Routing Protocols

Campus Backbone with Layer 3 Switching

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Cisco Catalyst 4500

4 – Design Guide: Midsize Market Campus Network Deployment Scenarios

There are four common deployment scenarios based on the number of users in the network:  Small Office—Up to 108 users  Small to Medium Campus—Up to 250 users  Single Building Medium Campus—Up to 500 users  Medium Campus—Up to 1,500 users

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Cisco Catalyst 4500

4 – Design Guide: Network Elements  Access, Distribution, and Core switches  Cisco Catalyst 4503 Switch with Supervisor-II-PlusTS

 Additional Access Switches  Cisco Catalyst Express 500 Series Switches (for 1020 additional Ethernet ports)

 Additional Network Elements  Cisco ISR (for WAN connectivity, firewall and call processing function)  Cisco wireless access points  Cisco IP phones 24

Cisco Catalyst 4500

4 – Design Guide: Small Office (up to 108 Users)

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Cisco Catalyst 4500

4 – Design Guide: Small to Medium Campus (up to 250 Users)

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Cisco Catalyst 4500

4 – Design Guide: Single Building Medium Campus (up to 500 Users)

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Cisco Catalyst 4500

4 – Design Guide: Medium Campus (up to 1,500 Users)

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Cisco Catalyst 4500

Thanks you very much!