© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Deployment of Cisco Unified CallManager Release 5.0 Endpoints Configuring Cisco Catalyst Switches

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Supplies inline power to IP phones Supports voice and data VLANs on a single port Prioritizes voice traffic with CoS marking Cisco Catalyst Switch Role in IP Telephony

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Power over Ethernet (PoE): –Needs PoE line cards or PoE ports for Cisco Catalyst switches –Delivers 48V DC over data pairs (pins 1, 2, 3, and 6) Midspan power injection: –Needs external power source equipment –Delivers 48V DC over spare pairs (pins 4, 5, 7, and 8) Wall power: –Needs DC converter to connect a Cisco IP phone to a wall outlet Three Ways to Power Cisco IP Phones 110 V AC Wall Power to 48 V DC Converter AC Source No Power Power Injector Power

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Types of PoE Delivery

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Two Types of PoE Delivery Cisco original implementation: Provides 48V DC at up to 6.3-to-7.7W per port over data pins 1, 2, 3, and 6. Supports most Cisco devices (Cisco IP phones and wireless access points). Uses a Cisco proprietary method of determining if an attached device requires power. Power is delivered only to devices that require power. IEEE 802.3af Power over Ethernet: Specifies 48V DC at up to 15.4W per port over data pins 1, 2, 3, and 6 or spare pins 4, 5, 7, and 8. Enables a new range of Ethernet-powered devices because of increased power. Standardizes the method of determining if an attached device requires power. Power is delivered only to devices that require power. Has several optional elements, including power classification.

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Cisco Prestandard Device Detection Switch Cisco Prestandard Implementation Powered Device Port Rx Tx FLP It is an inline device. Pin3 Pin6 Pin1 Pin2

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v IEEE 802.3af Device Detection Switch IEEE 802.3af Powered Device Rx Tx Detect Voltage 25K Ohm Resistor It is an IEEE powered device. Pin3 Pin6 Pin1 Pin2 2.8V to 10V IEEE 802.3af PSE

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Cisco Catalyst Family of PoE Switches Cisco Catalyst 3560 Cisco Catalyst 3750 Cisco Catalyst 6500Cisco Catalyst 4500 Cisco EtherSwitch Network Module* *Cisco prestandard PoE only

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Cisco Catalyst Switch: Configuring PoE CatOS>(enable) set port inlinepower ? autoPort inline power auto mode offPort inline power off mode Cisco CatOS: Native Cisco IOS software: CSCOIOS(config-if)# power inline

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Cisco Catalyst Switch: Show Inline Power Status show port inline power 7 Default Inline Power allocation per port: Watts (0.23 Total inline power drawn by module 7: Watts (1.80 Port InlinePowered PowerAllocated Admin Oper Detected mWatt /1 auto off no 0 0 7/2 auto on yes /3 auto on yes /4 auto off no 0 0 7/5 auto off no 0 0 7/6 auto off no 0 0 7/7 auto off no 0 0 show power inline Interface Admin Oper Power ( mWatt ) Device FastEthernet9/1 auto on 6300 Cisco 6500 IP Phone FastEthernet9/2 auto on 6300 Cisco 6500 IP Phone FastEthernet9/3 auto off 0 n/a

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v A Multi-VLAN Access Port Access Port Untagged Tagged 802.1Q An access port able to handle two VLANs Access (data) VLAN and voice (auxiliary) VLAN

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Configuring Voice VLANs Using Cisco Catalyst Operating System Syntax: set port auxiliaryvlan mod[1 port]{vlan|untagged| dot1p|none} vlan = 1 to 1000 Example: Console>(enable) set port auxiliaryvlan 2/ Auxiliaryvlan 222 configuration successful. AuxiliaryVlan AuxVlanStatus Mod/Ports active 1/2,2/1-3

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Configuring Voice VLANs Using Native Cisco IOS Software Example: Console(config)#interface FastEthernet0/1 Console(config-if)#switchport mode access Console(config-if)#switchport voice vlan 261 Console(config-if)#switchport access vlan 262 Console(config-if)#spanning-tree portfast

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Verifying Voice VLAN Configuration Using Cisco Catalyst Operating System Console> (enable)show port 2/1... Port AuxiliaryVlan AuxVlan-Status /1 222 active... Console> (enable)show port auxiliaryvlan 222 AuxiliaryVlan AuxVlanStatus Mod/Ports active 1/2,2/1-3 Console> (enable)

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Verifying Voice VLAN Configuration Using Native Cisco IOS Software Class-1-Switch#sh interfaces fa0/4 switchport Name: Fa0/4 Switchport: Enabled Administrative Mode: static access Operational Mode: static access Administrative Trunking Encapsulation: negotiate Operational Trunking Encapsulation: native Negotiation of Trunking: Off Access Mode VLAN: 262 (VLAN0262) Trunking Native Mode VLAN: 1 (default) Voice VLAN: 261 (VLAN0261).

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Extending QoS to the Cisco IP Phone This feature allows the extension of the trusted boundary to the Cisco IP phone. Phone VLAN = 200 CoS = 5 PC VLAN = 3 CoS = 7 Desktop PC: IP Subnet A IP Phone: IP Subnet B CoS = 7CoS = 0 CoS = 7CoS = 2 CoS = 7 PC is trusted PC is not trusted CoS set to 2 PC is not trusted CoS set to 0 (normal) V Access port

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Configuring CoS set port qos mod/port cos cos-value Cisco Catalyst Operating System set port qos mod/ports... trust-ext {trusted | untrusted} Sets the default value for all packets that have arrived through an untrusted port Allows you to trust or not trust (set to 0) the CoS assigned to the device attached to the Cisco IP phone Switch(config)#interface FastEthernet0/1 Switch(config-if)#switchport priority extend { cos value | trust} Native Cisco IOS Chooses to modify, ignore, or trust the CoS of the attached device

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Summary Cisco voice-capable switches support three primary feature sets that can assist with an IP telephony deployment: POE, dual VLANs, and CoS. Most Cisco IP phone models are capable of using three options for power: inline power, external power, and wall power. Two types of inline power delivery are the Cisco prestandard implementation and IEEE 802.3af PoE. These differ in the amount of power supplied, how powered devices are discovered, and optional enhancements.

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v Summary (Cont.) The Cisco Catalyst 6500, 4500, 3750, and 3560 Series switches support 802.3af and Cisco PoE, dual VLANs, and CoS. Configure inline power using the set port inline power command (Catalyst operating system) or power inline (native Cisco IOS software) command. Using dual VLANs on a single-port Cisco Catalyst switch improves network scalability when you combine a voice network into a data network. When a PC and a Cisco IP phone share the same switch port, you can use the CoS on Cisco Catalyst switch models to classify circuits so that voice packets have priority over data packets.

© 2006 Cisco Systems, Inc. All rights reserved. CIPT1 v