Technical Configuration Guide Nortel IP Phone Inter-Working with Cisco L2 Switches Nov 10th, 2008 Issue: 1.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Copyright © 2007-2008 Nortel Networks All rights reserved. March 2008 The information in this document is subject to change without notice. The statements, configurations, technical data, and recommendations in this document are believed to be accurate and reliable, but are presented without express or implied warranty. Users must take full responsibility for their applications of any products specified in this document.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 TABLE OF CONTENTS INTRODUCTION ............................................................................................................................. 3 BASIC CONFIGURATION NOTES ................................................................................................. 4 HARDWARE AND SOFTWARE VERSIONS ................................................................................. 4 VOIP FEATURES. ......................
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Introduction The purpose of this document is to detail the steps and configuration necessary for Cisco L2 devices to interoperate with Nortel IP Phones. This document doesn’t include every possible combination of hardware, software, Protocol or feature testing scenarios.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Basic Configuration Notes The table below is based on configuration shown in the diagram on page 7, the focus of this TCG is how to configure Cisco Cat 3750 L2 switch to interop with Nortel IP set. 1) All configurations and testing was done with IPv4 2) Command Line Interface (CLI) was used for configuration. Cisco devices support web based configuration with limitations.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 VoIP Features. • • • • • • • • Power over Ethernet (PoE) 802.3af Link, Duplex, Auto-negotiate, 1000MB, 100MB, 10MB Virtual Local Area Networking (VLAN) tagging 802.1Q Quality of Service (QoS) 802.1Q/p Dynamic Host Configuration Protocol (DHCP) Extensible Authentication Protocol (EAP) 802.1x Link Layer Discovery Protocol (LLDP) 802.1ab Spanning Tree Protocol (STP) 802.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Integration Notes and Limitations This TCG covers standalone Nortel IP Phone sets and how they can be deployed on various Cisco switches. It will cover features on Cisco switches related to VoIP with configuration examples. In this guide the Nortel IP Phone 1140E is configured to use both Data and Voice VLANs. The focus of this guide is to configure Cisco switch to interoperate with Nortel IP Phones.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Network Topology PoE 802.3af Power over Ethernet Overview and Configuration Power over Ethernet (PoE) is defined by IEEE 802.3af to deliver up to 12.95 watts over structured cabling. The Power-over-Ethernet (PoE) technology provides electrical power via standard Cat-5 Ethernet cables, thereby eliminating the need for wall adapters or other external power sources for equipment connected in an Ethernet network.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 IEEE 802.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 PoE Cisco Switch Configuration The Cisco Catalyst 3750-24PS and 3750-48PS support 370 Watts of inline power, and should support class 3 PDs (15.4 Watts) on 24 ports or 7.7 Watts on 48 ports. By default, the power mode of a port is set to auto. Use the command show power inline to check the inline power configuration and status. Please see example at the bottom of the page.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide Gi1/0/2 static on Gi1/0/3 off off 15.4 0.0 Ieee PD n/a August 2008 n/a 15.4 n/a 15.4 Issue with Oversubscription of Power Both flavours of Cisco Cat 3750, the 24 and 48 port versions support 370 watts of inline power. If you are using Cat 3750 with 48 ports and all the ports are populated with Nortel Class 3 phones like 1140E and configured for “power inline auto” then you will Over-subscribe Power and likely damage the switch.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Table below displays the average power consumed for each Nortel IP Phone set. Model PEC Description Power budget (802.3af) PowerDraw Typical (watts) PowerDraw Max (watts) Class 2 3.2 4.2 Class 2 3.2 4.2 Class 2 3.2 4.8 Class 2 3.2 4.8 Class 2 3.2 4.8 Class 2 3.2 4.8 Class 3 8.0 13.0 Class 3 8.5 10.5 Class 3 8.5 10.5 Class 3 8.5 10.5 Class 3 8.5 10.5 Class 2 2.8 5.89 Class 2 2.8 5.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide NTYS05ACE6 IP Phone 1140E - Graphite with icon keycaps, no power supply (RoHS) 1140E NTYS05BCE6 NTYS06AAE6 Class 3 6.0 / 8.0 8.0 / 10.5 Class 3 6.0 / 8.0 8.0 / 10.5 Class 3 5.0 / 7.2 6.8 / 9.6 Class 3 5.0 / 7.2 6.8 / 9.6 Class 2 3.2 4.6 Class 2 3.2 4.6 Class 2 3.2 4.6 Class 2 3.2 4.6 Class 2 3.2 4.6 Class 2 3.2 4.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Port Link Speed 802.3ab Configuration The IEEE 802.3ab auto-negotiation protocol manages the switch settings for speed and duplex. The Nortel IP phones are capable of:1) Auto-negotiate (Recommended settings) 2) 10 MB half/full duplex 3) 100 MB half/full duplex Let both ports Nortel IP phone and Cisco L2 auto-negotiate both speed and duplex, the devices will connect using the optimal speed.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 VLAN and QoS 802.1Q/p Voice and Data A VLAN is a switched network that is logically segmented. Any switch port can belong to any VLAN (Voice, Data or both). Cisco Catalyst 3750 ports should be configured as access ports. The Nortel 1140E IP Phone will use the VOICE VLAN for voice traffic and the PC attached to the Nortel IP Phone 1140E data port will use the access VLAN for data traffic.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 The 1140E Nortel IP phone is configured to use both Voice and Data VLANs. Please see the following menu driven options.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 QoS 802.1Q/p Quality of Service Sound quality of an IP phone call can deteriorate if its traffic does not recive proper QoS treatment by the network. It is critical to the success of an IPT deployment that quality of service (QoS) either based on IEEE 802.1P class of service (CoS) or DSCP is implemented. QoS uses classification and scheduling to send network traffic from the switch in a predictable manner.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide • • August 2008 MQC based configuration using class−map and policy−map VLAN based configuration Port based Configuration Config terminal mls qos mls qos map cos-dscp 0 8 16 40 32 46 48 56 Intrerface level interface GigabitEthernet1/0/1 switchport access vlan 10 switchport mode access switchport voice vlan20 priority-queue out mls qos trust dscp spanning-tree portfast (Enter global configuration mode) (Enable QoS globally) (Define ingress CoS-t
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 (MQC) Mudular QoS CLI (Policy Based) MQC can be used to classify and mark the incoming packets and can be used instead of port specific configuration. You can also mark the incoming packets with the policy−map. The requirements of this configuration are as follows assuming you have Voice and Data VLANs configured with a PC on PC port. • • • Trust the DSCP values of the IP phone traffic. Mark DSCP value of the PC application.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide service−policy input voice−policy August 2008 (Apply created QoS policy “voice-policy”) Enabling VLAN-Based QoS on Physical Ports Please use the policy map “voice-policy” created above and apply to the VLAN in question.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Now the SRR will service priority queue with weight of 30 and the remaining 70 percent will be shared by queue 1 and queue 2 that is 35 percent each. Cisco Qos bandwidth settings and configuration Use the following command to change the bandwidth allocation to each queue.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 DHCP Dynamic Host Configuration Protocol The following configuration example covers setting up Cisco Cat 3750 to support both voice and data VLANs. With one DHCP server providing IP Addresses to multiple subnets the L3 device has to be configured to forward DHCP requests from the clients to the DHCP server. In our setup we have two VLANs, Voice and Data.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 EAPoL 802.1x (Extensible Authentication Protocol over LAN) Extensible Authentication Protocol over LAN is a port-based network access control protocol. EAPoL provides a method for performing authentication at the edge of the network in order to obtain network access based on the IEEE 802.1X standard. 802.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 host 10.10.133.36 auth-port 1812 key secret_value Note: • • • Host IP is the IP address of RADIUS Server Auth-port is the UDP authentication port configured on RADIUS server Key is the password configured on the RADIUS server for clients authentication Configuring Periodic Re-Authentication You can enable periodic 802.1x client re-authentication and specify how often it occurs.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 interface GigabitEthernet1/0/1 dot1x guest-vlan vlan-id ______________________________________________________________________________________________________ 24
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 LLDP 802.1ab (Link Layer Discovery Protocol) IEEE 802.1AB LLDP is a Layer 2 neighbor discovery protocol. It defines a standard method for Ethernet network devices such as switches, routers and IP Phones to advertise information about themselves to other nodes on the network and store the information they discover.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 The Nortel IP Phone is capable of receiving the following LLDP messages but not all are transmitted by Cisco switch:Chassis ID Port ID Time To Live End of LLDPPDU System Capabilities VLAN Name (voice and data VLAN configuration) MAC/PHY Configuration Status (link mismatch detection) LLDP-MED Capabilities Network Policy (voice VLAN and QoS configuration) Location Identification (store in the phone and forward to the server) Cisco Cat
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Clab_3750#sh lldp int GigabitEthernet1/0/1 GigabitEthernet1/0/1: Tx: enabled Rx: enabled Tx state: IDLE Rx state: WAIT FOR FRAME Please Note: The preferred method to assign VLANs to Nortel IP Phones is LLDP if available. The Network policy TLV allows both network connectivity devices and endpoints to advertise VLAN configurations and associated Layer 2 and Layer 3 attributes for the specific application on that port.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 STP 802.1w (Spanning Tree Protocol) Since Nortel IP Phone has two open ports one for the network and the other PC port there is always a chance of connecting both the ports to the Cisco switch and creating a loop. If a loop is detected the last port on the switch that caused the loop will go in blocking mode. Please Note: No configuration is available on Nortel IP phone for STP.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 Address 0018.1928.f500 This bridge is the root Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32809 (priority 32768 sys-id-ext 41) Address 0018.1928.f500 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------Gi1/0/1 Desg FWD 4 128.
Nortel VoIP Clients on Cisco L2 devices Configuration Guide August 2008 ****************************************************END***************************************************** The information in this document is subject to change without notice. The statements, configurations, technical data, and recommendations in this document are believed to be accurate and reliable, but are presented without express or implied warranty.
