Part No. 311208-A Rev 00 September 2000 4401 Great America Parkway Santa Clara, CA 95054 Configuring Business Policy Switches with Optivity Quick2Config 2.
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Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Text conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents Creating VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Configuring a port-based VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Configuring a protocol-based VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Configuring a MAC SA-based VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Configuring VLAN ports . . . . . . . . . . . . . . . .
Contents 9 Configuration summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Dynamic DiffServ management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Static DiffServ management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Configuring dynamic QoS management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Configuring COPS connections . . . . . . . . . . .
Figures Figure 1 Stack and Switch Palette templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 2 Basic tab system properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 3 Basic port properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Figure 4 ATM MDA ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 5 ATM port properties . . . . . . . . .
Figures Figure 30 QoS Priority Queue Assignment table . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Figure 31 QoS DSCP Assignment table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Figure 32 QoS Advanced tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Figure 33 Image Download Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables Table 1 VLAN types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Table 2 STP port read-only properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Table 3 Spanning Tree Protocol Group properties . . . . . . . . . . . . . . . . . . . . . . . . 58 Table 4 QoS policy agent properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Table 5 COPS Configuration table properties . . . . . . . .
Preface Optivity Quick2Config™ is a graphical network configuration application you can use to configure the Business Policy Switch™ 2000 and switches in the BayStack™ 450 product group (BayStack 450, 410, and 350 switches). Before you begin This guide is intended for network managers using a Microsoft® Windows NT® or UNIX-based management station. Prior knowledge of Optivity Quick2Config 2.2 is not required.
Preface Acronyms This guide uses the following acronyms: BPDU Bridge Protocol Data Unit COPS Common Open Policy Services CoS class of service DS Differentiated Services (DiffServ) DSCP DiffServ codepoint ELAN emulated LAN GUI graphical user interface IEEE Institute of Electrical and Electronic Engineers IETF Internet Engineering Task Force IGMP Internet Gateway Management Protocol IP Internet Protocol LAN local area network IVL independent VLAN learning LANE LAN emulation LDA
Preface 17 QoS Quality of Service SNMP Simple Network Management Protocol STG Spanning Tree Group STP Spanning Tree Protocol TCP Tranmission Control Protocol TFTP Trivial File Transfer Protocol VLAN virtual local area network Related publications For more information about Optivity Quick2Config 2.2, Business Policy Switch 2000 and BayStack devices, and Optivity Policy Server software, see the following publications.
Preface Optivity Policy Server • Optivity Policy Services for the Business Policy Switch (part number 303969-D Rev 00) This guide describes how to set up and use Optivity Policy Services (OPS) and provides overview information on policy-related protocols. Business Policy Switch 2000 • Using the Business Policy Switch 2000 (part number 208700-A) This guide describes how to use the Business Policy Switch 2000.
Preface 19 Hard-copy technical manuals You can print selected technical manuals and release notes free, directly from the Internet. Go to the support.baynetworks.com/library/tpubs/ URL. Find the product for which you need documentation. Then locate the specific category and model or version for your hardware or software product. Use Adobe Acrobat Reader to open the manuals and release notes, search for the sections you need, and print them on most standard printers. Go to Adobe Systems at www.adobe.
Chapter 1 Configuring switches You can use Optivity Quick2Config 2.2 to view and modify configuration data for Nortel Networks Business Policy Switch 2000 and BayStack 450, 410, and 350 Series switches. Read this chapter for information about how to start working with configuration data, and instructions for setting or changing the properties of default switch configuration objects.
Chapter 1 Configuring switches Prerequisites Before you can use Optivity Quick2Config 2.2 to configure a Business Policy Switch 2000 or BayStack switch, the switch must be: • Accessible to the Optivity configuration server through an established Simple Network Management Protocol (SNMP) connection. For the initial setup of a switch, you configure an IP address, subnet mask, and gateway address for the switch or stack. For a standalone switch, you enter the in-band IP address.
Chapter 1 Configuring switches 23 Before you attempt to import data from a switch, make sure that the switch SNMP agent is available, and that you can supply the device IP address and community string. Quick2Config initially determines system information from the switch. After you import a configuration to the Quick2Config database, you do not have to modify any system data unless you want to change something in the existing configuration.
Chapter 1 Configuring switches When you create standalone and stack templates, Quick2Config creates default IP, MLT, SNMP, STP, and QoS (Business Policy Switch 2000 only) configuration objects in the navigation pane tree. Standalone switches also automatically include configuration objects for switch ports and a default port-based VLAN. Note: You cannot delete these default configuration objects, or create them from the Palette.
Chapter 1 Configuring switches 25 • • To set or change the switch IP address or subnet mask, see “Configuring IP” on page 30. To supply the required SNMP community strings or to enable SNMP traps, see “Configuring SNMP” on page 31. Configuring basic properties When you import a switch, some general system information is added to the database. You can view or configure the system name, contact, and location strings for a switch.
Chapter 1 Configuring switches Configuring Ethernet ports You can use Quick2Config to enable or disable switch and MDA ports, and to set the port speed for an Ethernet port. To set basic Ethernet port properties: 1 In the navigation pane, open the switch or Ethernet MDA and select a port. To assign the same properties to a group of ports on the same switch, select multiple ports in the navigation pane. The port Basic tab opens in the context-sensitive pane (Figure 3).
Chapter 1 Configuring switches 27 Full duplex operation is intended for directly connected links, such as between two switches or between a switch and an end station. Half duplex operation, where transmission occurs in one direction at a time, is usually the best choice for shared links that require access control and collision detection. Note the following: • • • You can set gigabit MDA ports to Autonegotiate or 1000 Mb/s Full Duplex only.
Chapter 1 Configuring switches This section describes how to use the Basic properties tab to enable or disable ATM ports, set the port speed, enable or disable the LEC software, and to configure LEC failover. To view or set basic ATM port properties: 1 In the navigation pane, open the MDA and select a port (Figure 4). Figure 4 ATM MDA ports To assign the same properties to a group of ports, select multiple ports in the navigation pane.
Chapter 1 Configuring switches 29 The Operational Status property indicates the current link state of the port, as follows: • • Up indicates that the port is connected and operational. Down indicates that the port is not connected or is not operational. The LEC State field indicates whether the LAN emulation client is currently active. 2 From the Administration Status list, choose Enabled.
Chapter 1 Configuring switches Configuring IP You can use Quick2Config to configure the subnet mask and default gateway for a switch, and to view the switch MAC and IP addresses. The stack or standalone IP and MAC addresses are imported from the device and are read-only. To set IP properties: 1 In the navigation pane, open the switch object and select IP. The IP Basic tab opens in the context-sensitive pane (Figure 6). Figure 6 IP properties 2 Type the subnet mask for the IP address.
Chapter 1 Configuring switches 31 Configuring SNMP You can use Quick2Config to supply the required SNMP community strings for a switch, and to enable SNMP traps. Traps are SNMP management information packets generated by devices on the network. You can configure 1 to 4 management stations as trap receivers, to receive all SNMP trap messages from the selected switch. To set the SNMP properties for a switch: 1 In the navigation pane, open the switch and select the SNMP object.
Chapter 1 Configuring switches 3 4 To configure SNMP trap receivers for the switch, enter the IP address and community string for one to four trap receivers in the Trap Receivers table. a To add a new trap receiver to the table, click the green plus sign (+). b Type the IP address and community string of each trap receiver you want to specify. If you want the switch to send a trap when there is an SNMP authentication failure, enable the Authentication Trap property.
Chapter 1 Configuring switches 33 Quick2Config also validates the following VLAN configuration data: • • Port VLAN identifier (PVID) values — Each PVID must match a VLAN ID configured on the same device. VLAN names — The VLAN name property must not be empty, duplicated, or more than 16 characters. If one of the verifications fails, the export process stops immediately and displays an error message.
Chapter 2 Configuring VLANs You use virtual local area networks (VLANs) to create scalable broadcast domains in your network. Read the sections of this chapter to learn how to use Optivity Quick2Config 2.
Chapter 2 Configuring VLANs VLAN types The criteria used to determine membership in a VLAN determines the VLAN type. Table 1 describes the types of VLAN you can build with Quick2Config. All VLANs are defined by IEEE 802.1d. Business Policy Switch 2000 devices support all three types. The BayStack 450 product family supports port-based and protocol-based VLANs. Table 1 VLAN types Type Membership based on IEEE 802.
Chapter 2 Configuring VLANs 37 802.1Q frame tagging Business Policy Switch 2000 devices operate in accordance with the IEEE 802.1Q tagging rules. The 802.1Q specification defines a method to coordinate VLANs across multiple switches. A tagged port inserts an additional 4-octet header (tag) in each frame, after the source MAC address and before the frame type.
Chapter 2 Configuring VLANs Creating VLANs Before you can build a VLAN using Optivity Quick2Config 2.2, you must install and initially configure the network devices. For information about importing switch configurations, see “Importing configurations” on page 22. The following summarizes the steps to create and configure a VLAN: Note: For detailed procedures, see the sections that follow. 1 Use the Quick2Config Palette to add a VLAN to the switch. 2 Assign the VLAN ID and name.
Chapter 2 Configuring VLANs 39 3 In the context-sensitive pane, click the Properties tab (Figure 8). Figure 8 Port-based VLAN 4 5 In the Basic tab, assign the VLAN ID and name. a Keep the default VLAN ID 1, or specify a VLAN ID of 2 to 64. The ID must be identical in each participating switch. By coordinating VLAN IDs, you can extend a VLAN to multiple switches. b Type a descriptive VLAN name, 1 to 16 characters, to identify the VLAN.
Chapter 2 Configuring VLANs 2 In the navigation pane, select the VLAN. 3 In the context-sensitive pane, click the Properties tab (Figure 9). Figure 9 Protocol-based VLAN properties 4 5 Assign the VLAN ID and name. a Keep the default VLAN ID 1, or specify a VLAN ID of 2 to 64. The ID must be identical in each participating switch. b Type a descriptive VLAN name, 1 to 16 characters, to identify the VLAN. The name must be unique, and identical in each participating switch.
Chapter 2 Configuring VLANs 41 Configuring a MAC SA-based VLAN You can configure up to 48 MAC SA-based VLANs on a switch. In a VLAN based on the MAC source address (SA), a frame is associated with a VLAN only if the source MAC address is on an explicit list of MAC addresses that comprise the VLAN. Because it is necessary to explicitly associate MAC addresses with a MAC SA-based VLAN, the administrative overhead can be high.
Chapter 2 Configuring VLANs 5 In the MAC Addresses field, click Edit. The MAC Addresses window opens. 6 Specify MAC addresses, one line at a time. Use the following format: aa:bb:cc:dd:00:11 Note: You can cut and paste MAC addresses from a text, word processing, or speadsheet file. 7 Configure the ports to participate in the VLAN. See “Configuring VLAN ports,” next. Configuring VLAN ports To assign switch ports to participate in a VLAN: 1 In the navigation pane, select the switch ports.
Chapter 2 Configuring VLANs 43 2 In the context-sensitive pane, click the Properties tab. 3 Click the VLAN tab (Figure 11). Figure 11 Port VLAN tab By default, all ports are configured as access ports with Priority 0. 4 From the Port Type list, choose Trunk. For information about access and trunk connections, see “802.1Q frame tagging” on page 37. The port icon changes, so you can differentiate trunk and access ports in the navigation pane. 5 In the PVID field, match the VLAN ID number.
Chapter 3 Configuring IGMP snooping You can use Internet Group Management Protocol (IGMP) snooping to conserve bandwidth and control IP multicast streams. Read the sections of this chapter to learn how to use Optivity Quick2Config 2.
Chapter 3 Configuring IGMP snooping IGMP host membership reports IP multicast routers use IGMP to learn about the existence of host group members on their directly attached subnets. The IP multicast routers get this information by broadcasting IGMP queries and listening for IP hosts reporting their host group memberships. This process is used to set up a client/server relationship between an IP multicast source that provides the data streams and the clients that want to receive the data.
Chapter 3 Configuring IGMP snooping 47 Proxy reports IGMP snooping allows the switch to send multicast data to the members of a multicast group in a given VLAN only. When a switch acts as IGMP proxy, it forwards only one report to the router instead of one report for every member of the multicast group. IGMP snooping configuration rules Consider the following to determine how IGMP snooping affects a network topology: • • • • • • Static router ports must be port members of at least one VLAN.
Chapter 3 Configuring IGMP snooping 3 Click the IGMP tab (Figure 12). Figure 12 IGMP properties 4 From the IGMP Snooping list, choose Enabled. Enabling IGMP Snooping on an SVL VLAN enables the feature on all VLANs configured for the switch. 5 If you want this switch to consolidate the IGMP host membership reports it receives on downstream ports before forwarding, choose Enabled from the Proxy list. Enabling Proxy on an SVL VLAN enables consolidated proxy reports on all VLANs in the switch.
Chapter 3 Configuring IGMP snooping 49 Creating static router ports With IGMP snooping enabled, determine which VLAN ports have a path to an IP multicast router, then configure those links as static router ports. To configure a switch port as an IGMP static router port: 1 In the navigation pane, select one or more VLAN ports with a path to a multicast router. It is not necessary for the path to be direct. 2 In the context-sensitive pane, click the Properties tab. 3 Click the IGMP tab (Figure 13).
Chapter 4 Configuring multilink trunks You can use multilink trunks (MLTs) to combine Ethernet ports in a single, logical connection. Read the sections of this chapter to learn how to use Optivity Quick2Config 2.2 to configure MLTs: • • • “About multilink trunking,” next “MLT configuration guidelines” on page 52 “Creating an MLT group” on page 53 About multilink trunking In an MLT group, 2 to 4 ports form a single link to another switch or server.
Chapter 4 Configuring multilink trunks MLT configuration guidelines You can configure up to 6 MLT groups on each switch or stack. The Spanning Tree Protocol considers an MLT to be a single port. To plan for each MLT: • Determine which switch ports to combine as trunk members. Choose a minimum of 2 and a maximum of 4 Ethernet ports for each trunk.
Chapter 4 Configuring multilink trunks 53 Creating an MLT group To configure 2 to 4 switch ports in an MLT group: 1 In the navigation pane, open a switch and select the ports. For information about the ports you can configure in an MLT group, see “MLT configuration guidelines” on page 52. 2 Open the MLT Group folder. 3 Create shortcuts from the ports to the MLT. There are 6 MLT templates in the MLT Group folder. Use any unconfigured MLT. a Right-click the selected ports, then choose Copy.
Chapter 5 Configuring spanning tree By default, all switch ports are enabled for participation in the Spanning Tree Protocol (STP).
Chapter 5 Configuring spanning tree Changing the STP learning state To change the learning state: 1 In the navigation pane, select one or more switches or MDA ports. Select only ports that do not currently belong to an existing STP group. 2 In the context-sensitive pane, click the Properties tab. 3 Click the STP tab (Figure 15). Figure 15 STP port properties 4 From the Participation list, choose a learning state for this port or change the state to Forwarding only.
Chapter 5 Configuring spanning tree 57 In the remaining fields, Quick2Config reports the read-only values of STP port properties (Table 2). Table 2 STP port read-only properties Property Description Priority Indicates the STP priority for this port. Port priority determines the root bridge. A lower number establishes a higher priority. When one or more ports have the same path cost, the spanning tree algorithm selects the path with the highest priority (lowest numerical value).
Chapter 5 Configuring spanning tree Viewing and configuring STP group properties To configure a spanning tree group (STG): 1 In the navigation pane, open the Spanning Tree Protocol Group folder. 2 Select the STG ID. The STP Basic tab opens (Figure 16). Figure 16 Spanning Tree Protocol Group tab Table 3 describes the STP group properties. You can customize the value of Bridge Priority, Bridge Hello Time, Bridge Maximimum Age Time, and Bridge Forward Delay.
Chapter 5 Configuring spanning tree 59 Table 3 Spanning Tree Protocol Group properties (continued) Parameter Description Action Root Path Cost The path cost from this switch port to the root bridge. Read-only value Hello Time The Actual Hello Interval, the amount of time between transmissions Read-only value of configuration Bridge Protocol Data Units (BPDUs) that the root bridge is currently using.
Chapter 5 Configuring spanning tree Table 3 Spanning Tree Protocol Group properties (continued) Parameter Description Action Bridge Forward Delay The Forward Delay parameter value specified by management for this bridge. This parameter takes effect only when this bridge becomes the root bridge. The Forward Delay parameter value specifies the amount of time that the bridge ports remain in the Listening and Learning states before entering the Forwarding state.
Chapter 6 Configuring QoS filters You configure quality of service (QoS) policy filters on a Business Policy Switch to prioritize critical applications or sensitive traffic and to help tailor network performance. Read the sections of this chapter to learn how to use Optivity Quick2Config 2.
Chapter 6 Configuring QoS filters Most Business Policy Switches obtain QoS policy information from a server in the network that runs QoS policy management software such as Optivity Policy Services (OPS). The Optivity policy server transfers DiffServ information to policy client devices using the Common Open Policy Services (COPS) protocol. To manage QoS policies on the switch rather than from a policy server, you must work with many components.
Chapter 6 Configuring QoS filters 63 DiffServ codepoints DiffServ architecture relies on a special encoding of the first 6 bits of the DS byte in the IP header—the Ipv4 Type of Service (ToS) byte or the Ipv6 Traffic Class byte. These first 6 bits of the ToS or Traffic Class byte are called the DiffServ codepoint (DSCP). The DSCP signifies the quality of service that a flow of packets should receive when handled by a policy-enabled network.
Chapter 6 Configuring QoS filters Dynamic DiffServ management In a policy-enabled network that uses a centralized policy server, each client device operates in dynamic mode. There can be a single policy server for each DiffServ domain, but a hierarchy of policy clients within the domain. To operate with a COPS policy server in dynamic mode, you need to: • • Choose dynamic DiffServ management in the QoS Properties tab. See “Configuring dynamic QoS management” on page 65.
Chapter 6 Configuring QoS filters 65 Configuring dynamic QoS management With dynamic DiffServ management enabled, a COPS policy server manages QoS policies on the switch. Note: With dynamic DiffServ management disabled (the default), the switch manages all QoS operation and you must configure policies locally. See “Configuring policies locally” on page 69. To enable a Business Policy Switch 2000 as a QoS policy client: 1 In the navigation pane, expand the switch device tree. 2 Select QoS.
Chapter 6 Configuring QoS filters 4 Use the information in Table 4 to configure property values. Table 4 QoS policy agent properties Property Description Action Dynamic Management Determines whether QoS filters are configured locally (static management) or dynamically, by a policy server. To disable internal QoS management to operate with a policy server, choose Enabled. To manage policies locally, disable dynamic management. With dynamic management, you must configure COPS.
Chapter 6 Configuring QoS filters 67 Configuring COPS connections With dynamic management enabled, the DiffServ policy server uses the Common Open Policy Service (COPS) protocol to transfer DiffServ information to the switch, and the switch uses COPS to report its client policy information to the server. COPS uses the Transmission Control Protocol (TCP) to exchange messages.
Chapter 6 Configuring QoS filters Table 5 COPS Configuration table properties (continued) Property Description Action Client Type The protocol client type for this COPS server. A value of 0 (zero) indicates that this entry contains information about the underlying connection. None; this is a read-only value. Note: A single COPS server can support multiple clients. Auth Type The authentication mechanism that this None; this is a read-only switch uses to negotiate security at the value.
Chapter 6 Configuring QoS filters 69 3 Use the information in Table 6 to configure property values. Table 6 COPS Retry Setting properties Property Description Action Retry Algorithm The type of algorithm to use to determine when to retry a connection attempt. Choose Sequential, Round Robin, or Other. Retry Count The number of retries to attempt. Type the number of retry attempts. Retry Interval The length of time between retries. Type the number of seconds between retries.
Chapter 6 Configuring QoS filters Configuring IP filter classifications To configure IP filter classes: 1 In the navigation pane, expand the switch device and the QoS folder. 2 Select IP Classification. 3 Click the Properties tab to view the IP Filter table (Figure 20). Figure 20 QoS IP Filter table 4 Use the information in Table 7 to configure property values. Table 7 QoS IP Filter table properties Property Description Action Index Uniquely identifies this class.
Chapter 6 Configuring QoS filters 71 Table 7 QoS IP Filter table properties (continued) Property Description Action DSCP Sets the IP filter to match packets with a specific DSCP value in the IP header. On untrusted interfaces, the packet’s DSCP value must be re-marked. Type the hex value of the DSCP in the packet, from 0x00 (0 decimal value) to 0x3F (63 decimal value). To ignore the DSCP value in the packet, choose the default (-1).
Chapter 6 Configuring QoS filters Figure 21 QoS 802 Filter table 5 Use the information in Table 8 to configure values for the Layer 2 filter properties. Table 8 QoS 802 Filter properties Property Description Action Index Uniquely identifies this policy rule instance. Type a number to uniquely identify this policy rule. VLAN ID Uniquely identifies the VLAN. Type the VLAN ID. VLAN Tag Required Set the filter profile to match on the presence or absence of a VLAN tag.
Chapter 6 Configuring QoS filters 73 Table 8 QoS 802 Filter properties (continued) Property Description Action Protocol Selects one or all of the following IP protocols to match against the packet protocol: • TCP • UDP • ICMP • IGMP • RSVP Choose the IP protocol to match against the packet’s IP protocol. To match all IP protocols, choose Match All. Dest L4 Port Min The minimum value of the packet’s Layer Choose the port number, 0 to 65535. 4 destination port number. In release 1.
Chapter 6 Configuring QoS filters Configuring IP and Layer 2 filter groups You can configure filter groups of IP (Layer 3) and 802.2 (Layer 2) classifications. To configure filter groups: 1 In the navigation pane, select IP Classification or Layer2 Classification. 2 In the Properties tab, click the IP Filter Group or 802 Filter Group table tab. Figure 22 shows an example IP Filter Group table. The 802 Filter Group table has the same properties.
Chapter 6 Configuring QoS filters 75 Configuring filter actions An action specifies the type of behavior you want the policy to apply to a filter group. Actions can control packet size and flow rate, deny packet flow, drop packets, or apply a predefined class of service to a flow of packets. A policy can have only one action applied to it, but you can apply an action to multiple policies. To configure filter actions: 1 In the navigation pane, expand the switch device and the QoS folder.
Chapter 6 Configuring QoS filters Table 10 QoS Action table properties (continued) Property Description Action Update DSCP Updates the DS field of an Type a hex value, or -1 to use associated IP datagram with a the existing DSCP. specified value. For example, 0x2f changes the DSCP value to the decimal value 47 in the match packet. Set Drop Precedence Specifies an IP drop precedence. Choose a packet drop precedence value.
Chapter 6 Configuring QoS filters 77 Figure 24 QoS Policy table 4 Use the information in Table 11 to configure property values. Table 11 QoS Policy table properties Property Description Action Index Uniquely identifies the action for this policy. Type a configured Index number from the Action table. See “Configuring filter actions” on page 75. Filter Group ID Identifies the configured filter group for this Type the filter number from the IP or 802 policy. Filter Group table.
Chapter 6 Configuring QoS filters Configuring QoS interfaces In a policy-enabled network, you can group device interfaces according to a logical function, rather than by the actual packet content of the network traffic they control. For example, a policy might apply only to Accounting department traffic, or to a certain building in an enterprise campus. Role combination definitions map the physical interfaces on a switch to a logical function.
Chapter 6 Configuring QoS filters 79 Creating new role combinations To add an interface role combination to the QoS Interface Configuration: 1 In the navigation pane, expand the QoS item. 2 Select Interface Configuration. 3 In the Palette tab, create a new Role Combination. 4 Click the Properties tab (Figure 25). Figure 25 QoS Role Combination properties 5 Use the information in Table 12 to configure property values.
Chapter 6 Configuring QoS filters Table 12 QoS role combination properties (continued) Property Description Action Queue Set The queue set associated with this role combination: • Queue Set 1 has four queues. The first is serviced by a Priority Queuing discipline. The other three queues are serviced in a weighted round robin (Fair Queueing) fashion. • Queue Set 2 has two queues that are serviced by a Priority Queuing discipline. Type the queue set ID, 1 or 2.
Chapter 6 Configuring QoS filters 81 Assigning ports to QoS roles You identify interface groups by assigning a role to the ports that will filter traffic. Note: All external switch ports are initially assigned to the predefined BPS Hybrid Ext Ifcs role combination. To assign a QoS policy role for one or more switch port: 1 In the navigation pane, expand the QoS Interface Configuration item. 2 Select one or more switch ports. 3 Create shortcuts from the ports to a configured Role Combination.
Chapter 6 Configuring QoS filters User priority and DSCP mapping On untrusted interfaces in the packet forwarding path, the DSCP in the IP header is mapped to the IEEE 802.1p User Priority field in the IEEE 802.1Q frame, and both of these fields are mapped to an IP Layer 2 drop precedence value that determines the forwarding treatment at each network node along the path. Table 13 maps standard Nortel Networks IP class of service values to the 802.1p user priorities.
Chapter 6 Configuring QoS filters 83 3 Click the Properties tab to view the Priority Mapping table (Figure 27). Figure 27 QoS Priority Mapping table 4 In the DSCP column, type the DSCP value that you want to associate with the specified 802.1p user priority value. Viewing DSCP mapping To view how DSCP values are mapped to 802.1p user priority and drop precedence values for your Business Policy Switch 2000: 1 In the navigation pane, expand the switch device and the QoS folder. 2 Select DSCP Mapping.
Chapter 6 Configuring QoS filters 3 Click the Properties tab to view the DSCP Mapping table (Figure 28). DSCP codepoints 0 through 63 are mapped to specific user priority and drop precedence values. Figure 28 QoS DSCP Mapping table Viewing transmit queue information The Interface Queue Table displays the QoS information configured for each interface transmit queue on the switch. To view the queueing information for each transmit queue, see “Viewing the Interface Queue table,” next.
Chapter 6 Configuring QoS filters 85 Viewing the Interface Queue table To view the Interface Queue table: 1 In the navigation pane, expand the switch device and the QoS folder. 2 Select Interface Configuration. 3 Click the Properties tab to view the Interface Queue table (Figure 29). Figure 29 QoS Interface Queue table Table 14 describes the information in the Interface Queue table. This information is read-only.
Chapter 6 Configuring QoS filters Table 14 QoS Interface Queue table properties (continued) Property Description Bandwidth % The percent of allocated bandwidth used by this queue. Absolute Bandwidth The maximum interface bandwidth that is available for consumption when servicing this queue. Bandwidth Allocation The absolute bandwidth limit, or a bandwidth limit that is relative to other queues of the interface. Service Order The queue’s level of priority. Size The size of the queue, in bytes.
Chapter 6 Configuring QoS filters 87 3 Click the Properties tab to open the Priority Queue Assignment table (Figure 30). Figure 30 QoS Priority Queue Assignment table Each 802.1p user priority value is assigned to a queue and queue set pair. Viewing DSCP assignments Each DSCP value is assigned to an interface queue. To view the DSCP queue assignments: 1 In the navigation pane, expand the QoS folder. 2 Click Priority Queue Assignment.
Chapter 6 Configuring QoS filters 3 Click the Properties tab (Figure 31). Figure 31 QoS DSCP Assignment table DSCP values (0-63) are assigned to a queue and queue set pair. Resetting QoS values in Quick2Config If you want to cancel the changes you made during a Quick2Config session, you can reset the Quick2Config database. To reset the QoS properties to default values within Quick2Config: 1 In the navigation pane, expand the switch. 2 Select QoS. 3 In the Properties tab, click Advanced.
Chapter 6 Configuring QoS filters 89 4 From the Reset Quick2Config QoS settings to default list, choose Yes (Figure 32).
Appendix A Downloading image files You can use Quick2Config to download image files—one at a time—from a TFTP server to Business Policy Switch 2000 or BayStack 450 switches in your network. The procedure is the same for both device types. Note: Certain BayStack software releases require that you download two images: the boot code image and the agent image. For proper operation of the switch, use the Image Download Wizard to download the new boot code image first; then, download the agent image.
Appendix A Downloading image files Figure 33 Image Download Wizard 4 Type the name of the image file. 5 Type the IP address of the TFTP server where you copied the file. 6 Click Finish. Quick2Config downloads the image file from the TFTP server to the switch.
Index Numbers C 802.1p user priority Nortel Networks service classes 82 Priority Mapping table 82 queue assignment 84 classifications, QoS about 62 Layer 2 71 Layer 3 70 802.
Index E Layer 3 classifications, QoS 70 emulated LAN (ELAN) 29 Ethernet ports 26 F LEC, ATM MDA ports 29 M MAC SA-based VLAN 36, 41 filters, QoS 61, 69 media dependent adapter (MDA) hardware 24 full duplex operation 27 multilink trunk (MLT) about 51 configuration rules 52 creating group 53 properties 53 G P gateway address 22 packet classifications 62 dropping 62 marking 62 frame tagging configuring 44 VLAN ports 44 H half duplex operation 27 Palette templates 23 policy agent, QoS 65 I
Index 95 properties ATM MDA ports 28 basic switch 25 Ethernet port 26 IGMP 48 IP 30 MAC-based VLAN 42 MLT 53 protocol-based VLAN 40 QoS 802 Filter Group table 72, 74 Action table 75 DSCP Mapping table 84 Interface Queue table 85 Interface Type table 67, 69, 79 IP Filter Group table 74 IP Filter table 70 policy agent 65 SNMP 31 STP group 58 system 25 R role combination, QoS 78, 79 S shared VLAN learning (SVL) 39, 41, 42 SNMP authentication failure 32 community strings 31 trap receivers 31, 32 Spanning Tree
Index trusted and untrusted ports 80 U untagged frames 44 untrusted ports 80 V virtual local area networks (VLANs) configuration steps 38 connections 37 learning type 39, 41, 42 MAC-based 36 port-based 36 ports 39, 40, 43 protocol-based 40 types 36 validation at export 33 311208-A Rev 00
