Sample QoS Configuration for Avaya TM S8300 Media Server with Avaya TM G700 Media Gateway in Nortel and 3Com Data Networking Infrastructure Issue 1.

Transcription

1 Sample QoS Configuration for Avaya TM S8300 Media Server with Avaya TM G700 Media Gateway in Nortel and 3Com Data Networking Infrastructure Issue 1.0 Abstract These Application Notes present sample Quality of Service (QoS) configuration to support Voice over IP (VoIP) calls for an Avaya S8300 Media Server with Avaya G700 Media Gateway in a Nortel and 3Com Data Networking Infrastructure. Avaya products verified include Avaya S8300 Media Server with Avaya G700 Media Gateway, Avaya IP telephones, Avaya IP Softphones and Avaya P333T-PWR Powered Ethernet Switch. The other vendors switches/routers verified are Nortel Business Policy Switch 2000, Nortel Passport 8010, and 3Com SuperStack 3 Switches 3300, 4400 and of 17

2 POWERFAULT DATAALARM POWERFAULT DATAALARM POWERFAULTDATA AL ARM POWERFAULT DATAALARM 1. Introduction These Application Notes present a sample configuration that provides an end-to-end QoS solution to support VoIP calls between branch Office A and Office B as shown in Figure 1. Office A uses the 3COM Switch 3300, 4400, and 4900 for its LAN connections and Office B uses a Nortel Business Policy Switch 2000 (BPS 2000) and Passport 8010 for its LAN connections. The 3COM Switch 3300 and 4400 and Nortel BPS 2000 are Layer 2 devices. The 3COM Switch 4900 and Nortel Passport 8010 are Layer 3 devices. The Avaya S8300 Media Server with Avaya G700 Media Gateway stacked with an Avaya P333T-PWR switch in Office A is connected to the 3COM Switch 4400, and the Avaya S8300 Media Server with Avaya G700 Media Gateway stacked with an Avaya P333T-PWR switch in Office B is connected to the Nortel BPS The Avaya P333T-PWR Switch can provide inline DC power over its 24 10/100 Base-T Ethernet ports for devices such as Avaya IP telephones. Avaya 30A Ethernet Switch Bases are needed for the Avaya 4600 Series IP telephones being verified in order to get inline power from the P333T-PWR switch. The port numbers used on each device are also indicated in Figure 1. Office A Office B IP Telephone A3 IP addresses: Cajun Stack: Media Gateway Processor (MGP): S8300 Media Server: VoIP Vo: IP Telephone IP addresses: Cajun Stack: Media Gateway Processor (MGP): S8300 Media Server: VoIP Vo: P333T-PWR G700/S Digital Telephone A1 Analog Telephone A2 P333T-PWR G700/S Digital Telephone B Com Com Com 4900 NT Passport NT BPS Analog Telephone B2 IP Telephone A4 PC IP Telephone A5 PC DHCP/TFTP Server IP Telephone B4 IP Softphone B5 IP Telephone B3 PC FIGURE 1: Sample Avaya S8300 Media Server with Avaya G700 Media Gateway Configuration using Nortel and 3Com Infrastructure 2 of 17

3 2. Equipment used for Validation This configuration was based on the following software versions: Network Component Software Version Avaya G700 Media Gateway SALT 16.1, 22.0 Avaya S8300 Media Server SALT 16.1, 22.0 (ACP 59.0) Avaya P333T-PWR Switch Avaya IP Softphone Avaya IP Telephone 1.6 Microsoft DHCP Manager Version 4.0 (NT SP6) Avaya TFTP Server Nortel Passport Nortel Business Policy Switch Nortel Device Manager Com Switch Com Switch Com Switch Table 1: Equipment and versions 3. Device Configurations Below is a summary of QoS features based on the equipment versions being verified: The 3COM switch 3300, 4400, and 4900 support ingress 802.1p/Q priority to queue mapping by default and cannot be changed. Nortel BPS 2000 and Passport 8010 allow users to change 802.1p/Q priority to queue mapping. The 3Com Switch 3300 supports two queues. The 3Com Switch 4400 and 3Com Switch 4900 support four queues p/Q priority 6 and 7 are mapped to the highest priority queue on these switches. The 24 10/100 Base-T ports on the Nortel BPS 2000 support four queues p/Q priority 6 and 7 are mapped to the highest priority queue by default. The Nortel Passport 8010 supports eight queues. Queues are serviced using guaranteed Weighted Round Robin. The highest priority queue is reserved for network control and cannot be used for applications. By default, 802.1p/Q priority 7 is mapped to the second highest queue. The highest queue for applications with Administration Weight 100 and priority 6 is mapped to the next highest queue with Administration Weight 31. As recommended by Avaya, Ethernet 802.1p/Q priority 6 is used to prioritize VoIP traffic, including signaling and media on all the devices being verified. DiffServ was not used in the configuration. 3 of 17

4 802.1p/Q priority 6 is not mapped to the highest queue for applications on the Nortel Passport However, the configuration can be changed to do so. To simplify the QoS configuration on the Avaya S8300 Media Server with Avaya G700 Media Gateway, the port level priority 6 (equivalent to 802.1p/Q priority 6) on the 3COM 4400 and the Nortel BPS 2000 is configured to prioritize all the traffic from the G700 Media Gateways (i.e., the Cajun P330-PWR stack). Therefore, the G700 Media Gateways and the stacked P333T-PWR switches should be used as voice devices only. Connect only Avaya IP telephones to the P333T- PWR switches. The Table below summarizes the QoS configurations required on each device: Avaya Equipment IP Telephones IP Softphones 802.1p/Q Configuration 802.1p/Q is enabled and VLAN ID is received from a DHCP server for IP telephones. IP Telephones tag with 802.1p/Q priority that is received from the S8300 media server via IP network region. Microsoft QoS Packet Scheduler is installed on the PC running IP Softphone. Enable 802.1p/Q on the NIC of a PC. IP Softphones tag with 802.1p/Q priority is received from the S8300 media server via IP network region. S8300 servers Enable 802.1p/Q with priority 6 for Signaling and Media via IP network region from the S8300 server. G700 Gateway (Cajun Stack) The port connected to 3COM or Nortel switch should be configured as clear (802.1p/Q disabled) 3COM Configuration Tagged VLAN on the port for IP telephones. Untagged VLAN on the port for PCs. The same as IP telephones N/A Configure the default priority of the port connected to the G700 Media Gateway to 6. Nortel BPS2000 Configuration Untagged VLAN on the port for IP telephones. Untagged native VLAN on the port for PCs. The port is configured as a trusted class. The same as IP telephones N/A The port is configured as an untrusted class. Configure the default priority of the port connected to the G700 Gateway to 6. Table 2: QoS configuration summary For brevity, the Command Line Interface (CLI) of the Nortel Passport 8010 is shown in the corresponding configuration section. 4 of 17

5 3.1. Avaya 8300 Server Configuration Refer to the Application Notes Sample Avaya G700 Media Gateway Controlled by Avaya S8300 Media Server Configuration" for detailed configuration on the S8300 Media Server and the G700 Media Gateway. The Application Notes can be found in Since Office A and Office B are connected via LAN connections, Office A and Office B are configured in the same network region with Codec G.711MU. When 802.1p/Q is enabled on Avaya IP telephones and IP Softphones (see section 3.7 and 3.8), the IP telephones and Softphones will receive the 802.1p/Q priority from IP network region configuration when registered with the S8300 servers. Table 3 shows the related S8300 server configuration screens using the System Access Terminal (SAT) for Office A (Command shown in bold) p/Q priority 6 is configured for call control (Signaling) and VoIP Media through IP network region configuration. rmt-chawk-procr in change signaling-group 1 refers to the IP address of the S8300 Media Server in Office B ( in the example). All the IP addresses are configured by change node-names ip using the SAT. The configuration for Office B is similar to Office A and is not presented here. change ip-interfaces Page 1 of 15 IP INTERFACES Enable Net Eth Pt Type Slot Code Sfx Node Name Subnet Mask Gateway Address Rgn y PROCR change ip-network-region 1 Page 1 of 2 IP Network Region Region: 1 Name: C-HAWK Audio Parameters Codec Set: 1 Location: UDP Port Range Min: 2048 Max: Direct IP-IP Audio Connections? y IP Audio Hairpinning? y RTCP Enabled? n DiffServ/TOS Parameters Call Control PHB Value: 46 VoIP Media PHB Value: 46 BBE PHB Value: p/Q Enabled? y Call Control 802.1p Priority: 6 VoIP Media 802.1p Priority: Q VLAN: 1011 Resource Reservation Parameters RSVP Enabled? n of 17

6 change ip-network-region 1 Page 2 of 2 Inter Network Region Connection Management Region (Group Of 32) change signaling-group 1 Page 1 of 5 SIGNALING GROUP Group Number: 1 Group Type: h.323 Remote Office? n Max number of NCA TSC: 0 Max number of CA TSC: 0 Trunk Group for NCA TSC: Trunk Group for Channel Selection: 2 Supplementary Service Protocol: a Near-end Node Name: procr Far-end Node Name: rmt-chawk-procr Near-end Listen Port: 5004 Far-end Listen Port: 5005 Far-end Network Region: 1 LRQ Required? n Calls Share IP Signaling Connection? y RRQ Required? n Bypass If IP Threshold Exceeded? n Direct IP-IP Audio Connections? y IP Audio Hairpinning? y Interworking Message: PROGress change ip-codec-set 1 Page 1 of 1 Codec Set: 1 IP Codec Set Audio Silence Frames Packet Codec Suppression Per Pkt Size(ms) 1: G.711MU n : 3: ---- Table 3: Avaya S8300 Media Server configuration in Office A COM Switch 3300 Configuration In order to put an IP telephone and a PC attached to the IP telephone into different VLANs, the 3Com Switch 3300 must be configured to support two VLANs an untagged VLAN for the PC and a tagged VLAN for the IP telephone. Port 3 is connected to IP telephone A4 in Figure 1. Table 4 shows two VLANs configured on port 3 of the 3COM Switch VLAN 1 is configured as untagged for a PC, and VLAN of 17

7 (associated with VLAN name C-Hawk ) is configured as tagged for an IP telephone. To get to the prompt shown, select bridge, vlan, and then addport in the initial menu screens. All the VLANs on the 3COM Switch 3300 must be configured as tagged VLANs on the infrastructure ports so that the 3COM Switch could send and receive 802.1p/Q priority on these ports. Table 5 shows the infrastructure port 1 summary configuration on the 3COM Switch Select menu option (bridge/vlan): addport Select VLAN ID (1-4094) [1]: 1 Select Ethernet port (1-25, all): 3 Enter tag type (none, 802.1Q) [802.1Q]: none Select menu option (bridge/vlan): addport Select VLAN ID (1-4094) [1]: 1011 Select Ethernet port (1-25, all): 3 Enter tag type (none, 802.1Q) [802.1Q]: Select menu option (bridge/port): detail Select bridge port (1-25): 3 Unit 1, Port 3 Detailed Information State: Forwarding fwdtransitions: 0 StpCost: 19 BroadcastStormControl: Enabled VLAN Membership VLAN ID Local ID Vlan Name Tagging Default VLAN None C-Hawk 802.1Q Table 4: Two VLANs configured on 3COM Switch Switch 3300TM (1) Select menu option (bridge/port): detail Select bridge port (1-25): 1 Unit 1, Port 1 Detailed Information State: Forwarding fwdtransitions: 2 StpCost: 18 BroadcastStormControl: Enabled VLAN Membership VLAN ID Local ID Vlan Name Tagging Default VLAN 802.1Q C-Hawk 802.1Q Table 5: Infrastructure port configuration on 3COM Switch of 17

8 3.3. 3COM Switch 4400 Configuration To configure a port with 2 VLANs for an IP telephone and PC, see Table 4. The command syntax is the same for the 3COM switch 3300, 4400 and All the VLANs on the 3COM Switch 4400 must be configured as tagged VLANs on its infrastructure ports, similar to the Switch Table 6 shows the summary information on the infrastructure port 1 and port 2 on the 3COM Switch Select menu option (bridge/port): detail Select bridge port (1-24,AL1-AL4): 1 Unit 1, Port 1 Detailed Information State: Link Down fwdtransitions: 10 StpCost: 19 BroadcastStormControl: Enabled DefaultPriority: 0 VLAN ID VLAN Name Tagging Mode Default VLAN Tagged 1011 VLAN 1011 Tagged Select menu option (bridge/port): detail Select bridge port (1-24,AL1-AL4): 2 Unit 1, Port 2 Detailed Information State: Forwarding fwdtransitions: 9 StpCost: 18 BroadcastStormControl: Enabled DefaultPriority: 0 VLAN ID VLAN Name Tagging Mode Default VLAN Tagged 1011 VLAN 1011 Tagged Table 6: Infrastructure port configuration on 3COM Switch 4400 Port 3 on the 3COM Switch 4400 is directly connected to the G700 Media Gateway in Office A. Table 7 shows the default priority of Port 3 configured to 6 to prioritize all the ingress clear traffic from the G700 Media Gateway. Note that the 3COM Switch 3300 is not allowed to configure the default priority on a port. Select menu option (bridge/port): defaultpriority Select bridge port (1-24,AL1-AL4,all)[all]: 3 Enter priority (0-7)[0]: Select menu option (bridge/port): detail Select bridge port (1-24,AL1-AL4): 3 8 of 17

9 Unit 1, Port 3 Detailed Information State: Forwarding fwdtransitions: 12 StpCost: 19 BroadcastStormControl: Enabled DefaultPriority: 5 VLAN ID VLAN Name Tagging Mode VLAN 1011 Untagged Table 7: Default port priority configuration on 3COM Switch COM Switch 4900 Configuration The 3COM Switch 4900 is a Layer 3 switch. All the VLANs configured on the 3COM 3300 and 4400 must use the 3COM Switch 4900 for interconnections (Layer 3 routing). Port 1 is connected to the 3COM 4400 in Figure 1, all the VLANs configured on the 3COM 4900 to support the 3COM 3300 and 4400 must be configured as tagged on its infrastructure port 1, similar to the configuration on the Switch 3300 in section 3.2. Port 2 is an infrastructure port connected to the Nortel Passport 8010, and a separate VLAN (i.e., VLAN 1022 in Table 8) is configured for the interconnection between the 3COM Switch 4900 and the Nortel Passport Therefore, the 3COM Switch 4900 becomes the Layer 3 boundary for all the VLANs configured on the 3COM Switch 3300 and Note that 802.1p/Q trunk must also be enabled on VLAN 1022 in order to send and receive 802.1p/Q priority. Table 8 shows the IP interface summary information and Table 9 shows the infrastructure ports 1 and 2 configurations on the 3COM Switch VLAN 1022 corresponding to IP interface 5 is created for the interconnection between the 3COM Switch 4900 and the Nortel Passport Select menu option (protocol/ip/interface): summary Select IP interface (1-3,5-6,all)[all]: all Index Type IP address Subnet mask State VLAN ID Primary Up 1 2 SLIP Up n/a 3 Primary Up Primary Up Primary Up 192 Table 8: IP interface configuration on 3COM Switch 4900 Select menu option (bridge/port): detail Select bridge port (1-16,AL1-AL4): 1 Unit 1, Port 1 Detailed Information State: Forwarding fwdtransitions: 0 StpCost: 18 BroadcastStormControl: Enabled DefaultPriority: 0 9 of 17

10 VLAN ID VLAN Name Tagging Mode Default VLAN Tagged 1011 VLAN 1011 Tagged Select menu option (bridge/port): detail Select bridge port (1-16,AL1-AL4): 2 Unit 1, Port 2 Detailed Information State: Forwarding fwdtransitions: 0 StpCost: 18 BroadcastStormControl: Enabled DefaultPriority: 0 VLAN ID VLAN Name Tagging Mode VLAN 1022 Tagged Table 9: Infrastructure port configuration on 3COM Switch 4900 The 3COM Switch 4900 only supports the RIP routing protocol. Table 10 shows the RIP Version 2 configuration on the 3COM Switch Note that interface 5 is the interface connecting the Nortel Passport 8010 and must be configured to send and receive RIP V2 in order to exchange routing information with the Nortel Passport The 3COM Switch 3300 and 4400 are Layer 2 devices and do not support Layer 3 routing protocols. Therefore, RIP is not configured on those interfaces. Select menu option (protocol/ip/rip): sendmode Select IP interface (1,3,5-6,all): 5 Interface 5 - Enter RIP send mode (donotsend,ripv1,ripv1compatible,ripv2)[donotsend]: ripv2 Interface 5 - Send Mode has been changed to RIPv2 Select menu option (protocol/ip/rip): receive Select IP interface (1,3,5-6,all): 5 Interface 5 - Enter RIP receive mode (donotreceive,ripv1,ripv2,ripv1orripv2)[donotreceive]: ripv2 Interface 5 - Receive Mode has been changed to RIPv2 Select menu option (protocol/ip/rip): summary RIP mode is enabled RIP update time in seconds: 30 RIP interface(s) information: Send Receive Poison Authentication Interface Mode Mode Reverse Mode donotsend donotreceive enabled none 3 donotsend donotreceive enabled none 5 RIPv2 RIPv2 enabled none 6 donotsend donotreceive enabled none Table 10: RIP configuration on 3COM Switch of 17

11 DHCP relay must be configured on the 3COM 4900 to support the IP telephones and the PCs in Figure 1. Table 11 shows the DHCP relay configuration on the 3COM Switch Note that UDP port 67 is the standard port for DHCP requests and is the IP address of the DHCP server in Figure 1. Select menu option (protocol/ip/udphelper): add Enter UDP Port (defaults, ): 67 Enter destination server IP address: The specified port/destination udphelper has been added Select menu option (protocol/ip/udphelper): summary Protocol UDP Port Destination IP Address BOOTP/DHCP Table 11: DHCP relay configuration on 3COM Switch Nortel BPS 2000 Configuration Port 4 of the Nortel BPS 2000 in Figure 1 is connected to IP telephone B3. Table 12 shows the text-based GUI being used configure two VLANs on port 4 to support a PC attached to an IP telephone. Nortel BPS 2000 does not allow configuring one VLAN as tagged and the other as untagged on the same port. Therefore, both VLAN 1 and VLAN 1033 shown in Table 12 are configured as untagged. Note that VLAN 1 becomes the native VLAN because it is first configured as untagged VLAN. All the ingress clear traffic from port 3 will be mapped to VLAN 1. VLAN Port Configuration Port: [ 4 ] Filter Tagged Frames: [ No ] Filter Untagged Frames: [ No ] Filter Unregistered Frames: No Port Name: [ Port 4 ] PVID: [ 1 ] Port Priority: [ 0 ] Tagging: [ Untagged Access ] AutoPVID (all ports): [ Disabled ] Port: [ 4 ] Filter Tagged Frames: [ No ] Filter Untagged Frames: [ No ] Filter Unregistered Frames: No Port Name: [ Port 4 ] PVID: [ 1033 ] Port Priority: [ 0 ] Tagging: [ Untagged Access ] 11 of 17

12 AutoPVID (all ports): [ Disabled ] VLAN Display by Port Port: [ 4 ] PVID: 1 Port Name: Port 4 VLANs VLAN Name VLANs VLAN Name VLAN # VLAN #1033 Table 12: Two VLANs configured on Nortel BPS 2000 Nortel PBS 2000 ports are classified into three categories: trusted, untrusted and unrestricted. These classifications actually apply to groups of ports or interface groups. By default, all ports are untrusted. Port 1 on the Nortel BPS 2000 is directly connected to the G700 Media Gateway in Office B in Figure 1. Port 1 must belong to the untrusted class in order to prioritize the ingress clear traffic from the G700 Media Gateway (as shown in Table 14) based on its default priority. Table 13 shows that port 1 is configured as untagged with the default priority 6. VLAN Port Configuration Port: [ 1 ] Filter Tagged Frames: [ No ] Filter Untagged Frames: [ No ] Filter Unregistered Frames: No Port Name: [ Port 1 ] PVID: [ 1033 ] Port Priority: [ 6 ] Tagging: [ Untagged Access ] AutoPVID (all ports): [ Disabled ] Table 13: Default port configuration on Nortel BPS 2000 Port 2, 3 and 4 are connected to the Passport 8010, IP Softphone B5 and IP telephone B3 respectively; Table 13 shows that these ports are configured in the trusted class (belong to a trusted interface). By configuring a port in the trusted class, the Nortel PBS 2000 will use ingress 802.1p/Q priority to prioritize IP traffic. 12 of 17

13 BPS2000(config)#qos if-group name if-trusted create class trusted BPS2000(config)#show qos interface-groups Role Interface Capabilities Storage Combination Class Type allbpsifcs Untrusted Input 802, Input IP Read Only if-trusted Trusted Non Volatil BPS2000(config)#qos if-assign-list name if-trusted add portlist 2 BPS2000(config)#qos if-assign-list name if-trusted add portlist 3 BPS2000(config)#qos if-assign-list name if-trusted add portlist 4 BPS2000(config)#show qos if-assign-list Unit Port IfIndex Role Comabination allbpsifcs if-trusted if-trusted if-trusted ---- Table 14: Trusted Port configuration on Nortel BPS 2000 The infrastructure port 2 connected to the Passport 8010 on the BPS 2000 is configured as tagged for all the VLANs configured on the BPS 2000 as shown in Table 15. Port: [ 2 ] Filter Tagged Frames: [ No ] Filter Untagged Frames: [ No ] Filter Unregistered Frames: No Port Name: [ Port 2 ] PVID: [ 1 ] Port Priority: [ 0 ] Tagging: [ Tagged Trunk ] AutoPVID (all ports): [ Disabled ] Port: [ 2 ] Filter Tagged Frames: [ No ] Filter Untagged Frames: [ No ] Filter Unregistered Frames: No Port Name: [ Port 2 ] PVID: [ 1033 ] Port Priority: [ 0 ] Tagging: [ Tagged Trunk ] AutoPVID (all ports): [ Disabled ] VLAN Display by Port Port: [ 2 ] PVID: of 17

14 Port Name: Port 2 VLANs VLAN Name VLANs VLAN Name VLAN # VLAN #1033 Table 15: Infrastructure port configuration on Nortel BPS Nortel Passport 8010 Configuration By default, all the ports on Nortel Passport 8010 are configured to be core ports and trust ingress 802.1p/Q priority. Therefore, there is no configuration needed on the Nortel Passport 8010 to support QoS. Table 16 shows the DHCP relay configuration on the Passport 8010 to support Avaya IP telephones in Figure 1. Note that is the local IP address for /24 network on the Passport Passport-8610:5/config/ip/dhcp-relay# create-fwd-path agent server mode dhcp state enable Passport-8610:5/config/ip/dhcp-relay# info Sub-Context: Current Context: create : agent server state : enable delete : N/A mode : DHCP Table 16: DHCP relay configuration on Nortel Passport 8010 Table 17 shows the configuration for infrastructure ports 2 and 17, IP interface, and RIP. Port 2 is connected to the Nortel BPS 2000 and port 17 is connected to the 3COM switch of 17

15 ethernet 1/2 perform-tagging enable vlan 1033 ports add 1/2 member portmember ethernet 1/17 perform-tagging enable vlan 1022 ports add 1/17 member portmember vlan 1022 ip create / mac_offset 4 vlan 1033 ip create / mac_offset 3 vlan 1022 ip rip enable ip rip enable ip rip send mode rip2 ip rip receive mode rip2 Table 17: Infrastructure port, IP interface and RIP configuration on Nortel Passport Microsoft DHCP Server configuration for IP telephones An Avaya IP telephone gets its IP address and gateway IP address through a DHCP server, in the same manner as a PC. The IP telephone related parameters could be obtained through option number 176 configured on the DHCP server. These Application Notes do not cover detailed configuration on the DHCP server. Please refer to the standard configuration documents for the IP telephone Avaya IP telephones and Softphone Configuration Avaya IP telephones get configuration through a DHCP server (described in section 3.7) and S8300 Media server (802.1p/Q priority and DSCP as described in section 3.1 via IP network region). There is no manual configuration needed for Avaya IP telephones. Note that 802.1p/Q for the Avaya IP telephone must be enabled through the DHCP server in order to receive 802.1p/Q priority from the S88700 Media servers. In order to support 802.1p/Q priority for the PC running Avaya Softphone, QoS Packet Scheduler must be installed on the PC and 802.1p/Q must be enabled for the NIC of the PC G700 Media Gateway Configuration In order to use the default port priority on the 3COM 4400 and the Nortel BPS 2000, the ports connected to the 3COM 4400 and the Nortel BPS 2000 on the G700 Media Gateways (or P330 Cajun stacks) in Office A and Office B must be configured as clear, which is the default configuration. Port 1/1 on the G700 Media Gateway in Office A is connected to the 3COM Switch Table 18 shows the configuration. 15 of 17

16 Cajun_P330-1(super)# show trunk 1/1 Port Mode Binding mode Native vlan Vlans allowed on trunk /1 off statically bound Table 18: G700 Media Gateway port configuration 4. Recommendations 1. Some versions of the Nortel Passport 8010 may not support VLAN = 0. Therefore, use the native VLAN ID for IP telephones through a DHCP server. 2. Some versions of Nortel Passport 8010 may not support two VLANs on the same port. Therefore, configuring one VLAN for an Avaya IP telephone and another VLAN for a PC attached to the Avaya IP telephone is not possible. 5. Conclusion As illustrated in these Application Notes, QoS configurations based on 802.1p/Q priority for Avaya S8300 Media Server with Avaya G700 Media Gateway, Avaya IP telephones and Avaya IP Softphones work well with the Nortel and 3Com Switches verified here. This reinforces the Avaya strategy of evolving enterprise networks not reinventing them to support QoS and VoIP traffic. 16 of 17

17 Avaya and the Avaya Logo are trademarks of Avaya Inc. All trademarks identified by and are registered trademarks or trademarks, respectively, of Avaya Inc. All other trademarks are the property of their respective owners. The information provided in these Application Notes is subject to change without notice. The configurations, technical data, and recommendations provided in these Application Notes are believed to be accurate and dependable, but are presented without express or implied warranty. Users are responsible for their application of any products specified in these Application Notes. Please any questions or comments pertaining to these Application Notes along with the full title name and filename, located in the lower right corner, directly to the Avaya Solution & Interoperability Test Lab at 17 of 17