【文章內(nèi)容簡(jiǎn)介】 R1225WAC Power Supply Cisco Catalyst 3750E and 3560E Series Switch Type ? Wide variety of power supply options 48 port POE, 24 port POE, and data only options DC power available in every model for data only ? With the RPS 2300, a power supply can be replaced without powering down the switch AC Supply DC Supply Switch with 1225WAC Supply 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 17 Redundant Power Supply – RPS 2300 ? Seamless failover from switch to RPS when PS fails ? Automatic backoff to switch when its power supply returns ? RPS and switches support dual AC power circuits ? Connect up to six switches ? Two switches can be actively backed up ? Dual modular power supplies allow the RPS to match the switches’ supplies ? Field replaceable blower module Backwards Compatible Switches: 2950, 2960, 2970, 3550, 3560, and 3750 Routers: 2811, 2821, 2851, and 3825 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 18 Operations 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 19 IOS Software Feature Sets ? Three IOS feature sets ? IP Base Layer 2 Forwarding Base IPv6 Services Basic Routing Security ? IP Services Full EIGRP and OSPF Routing Multicast Routing Policy Based Routing ? Advanced IP Services IPv6 Routing 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 20 Cisco Catalyst Intelligent Switching Infrastructure Performance, Availability QoS Security Manageability Intelligent Switching is a Common Foundation of Capabilities across Cisco174。 Catalyst174。 Switches ?Wirespeed forwarding ?No performance effect with all services enabled ?Layer 2, 3, 4 classification ?Policing and shaping ?Multiple queues ?Granular control ?Layer 2, 3, 4 access control ?Identitybased authentication ?Management security ?Admission control ?Endtoend manageability for centralized administration ?Webbased or mandline interface (CLI) ?Analysis and planning tools 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 21 Aggregation Speed Mismatch 10 Mbps 1000 Mbps LAN to WAN 10 Mbps 64 kbps Where Congestion Exists, QoS is Required ? Points of aggregation ? Links and buffers ? Points of substantial speed mismatch ? Transmit buffers tend to fill (TCP windowing) ? Buffering reduces loss, introduces delay 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 22 Cisco Catalyst Series Extensive QoS Features RX Queue 1 Queue 2 Queue 3 Queue 4 Ingress Police Classify TX Ingress Queuing/ Scheduling Congestion Control Mark S2 Advanced Traffic Shaping and Scheduling ? Four Queues per Port ? Shaped Round Robin ? Strict Priority Queuing Admission Control ? Prevent Network Congestion ? Input and Output Policing per Port Traffic Classification and Marking for Differentiated Services PerPort or Individual/Aggregate Flow Classification and Rewriting of MAC Address, CoS/DSCP, IP Address, and TCP/UDP Port Egress Queuing/ Scheduling Congestion Control 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 23 WAN Auto QoS One Command per Interface to Enable and Configure QoS. Modify Global and Interface Settings to Make QoS for VoIP Work. ? ? ? Cisco174。 CallManager Cisco Unity174。 Software Voice Applications Voice Gateways ? ? ? 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 24 Phone VLAN = 110 Campus QoS Considerations Trust Boundary Extension and Operation 1 Switch and Phone Exchange CDP。 Trust Boundary Is Extended to IP Phone 2 Phone Sets CoS to 5 for VoIP and to 3 for CallSignaling Traffic 3 Phone Rewrites CoS from PC Port to 0 All PC Traffic Is Reset to CoS 0 4 Switch Trusts CoS from Phone and Maps CoS ? DSCP for Output Queuing ―CoS 5 = DSCP 46” ―CoS 3 = DSCP 24” ―CoS 0 = DSCP 0” 4 1 So I Will Trust Your CoS‖ ―I See You‘re an IP Phone, TRUST BOUNDARY ―Voice = 5, Signaling = 3” 2 PC Sets CoS to 5 for All Traffic 3 PC VLAN = 10 169。 2023 Cisco Systems, Inc. All rights reserved. Cisco Confidential Presentation_ID 25 Unauthorized Switch Enterprise Server Unauthorized Switch Cisco174。 Secure ACS Enterprise Server Mitigating Unauthorized Devices Problem: Wellintentioned users place unauthorized work devices on the work, possibly causing instability. Solution: Cisco Catalyst174。 Switches support rogue BPDU filtering: BPDU Guard, Root Guard Incorrect STP Info BPDU Guard Network Instability Authorized Switch Authorized Switch Root Guard Protecting Against We