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Cisco Prime Nerk 43 User Guide

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    24-17
    Cisco Prime Network 4.3.2 User Guide
    Chapter 24      Managing Session Border Controllers (SBCs)
      Configuring SBC Components
    Add Codec List EntryIn the Codec List window, 
    right-click the codec list 
    instance> Commands> Add> 
    Codec List EntryAdd, modify, or delete an entry in a 
    codec list.
    Update Codec List Entry
    Delete Codec List EntryDouble-click the codec list, then 
    right-click the codec> 
    Commands> Update /Delete> 
    Codec List Entry
    Media Addresses
    Add Media AddressRight-click the SBE node> 
    Commands> Add> Media 
    AddressAdd a media address or media 
    Address DBE with parameters 
    indicating that media address is 
    managed by the Data Border 
    Element (DBE) or Media Gateway 
    Configuration (MGC). Add Media Address DbeRight-click the DBE node> 
    Commands> Add> Media 
    Address Dbe
    Delete Media AddressExpand the DBE node and click 
    the Media Address 
    node >Right-click the media 
    address> Commands> 
    Delete>Media AddressDelete an existing media address 
    from the DBE node.
    QoS Profiles
    Add QoS ProfileRight-click the SBE node> 
    Commands> Add> QoS ProfileConfigure QoS profile on a SBE 
    node
    Update QoS Profile
    Delete QoS ProfileRight-click the profile in the QoS 
    Profile window > Commands> 
    Update> QoS Profile Command Navigation Description 
    						
    							 
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    Chapter 24      Managing Session Border Controllers (SBCs)
      Configuring SBC Components 
    						
    							CH A P T E R
     
    25-1
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    25
    Monitoring BNG Configurations
    Broadband Network Gateway (BNG) provides capabilities that help to improve the service providers 
    ability to manage the subscribers services, and simplify overall network operations. BNG is a 
    functionality that comprises subscriber management at a logical aggregation point in the network, which 
    manages the subscriber’s user experience through identification, address assignment, authentication, 
    authorization, accounting, and various other features such as security, Quality of Service (QoS), and 
    subscriber forwarding.
    BNG represents the subscriber as a session, which is a logical point to enable services for a given 
    subscriber. A subscriber is usually identified with the protocol that provides the IP address of the 
    subscriber for address assignment. For example, a subscriber that uses the Point-to-Point Protocol (PPP) 
    to connect to the network, receives its IP address through the PPP IP Control Protocol (IPCP) 
    negotiation, and is represented as a PPP session. A subscriber that uses Ethernet to connect to the 
    network receives its IP address through Dynamic Host Control Protocol (DHCP) and is represented as 
    an IP session.
    The purpose of deploying BNG at the provider edge is to better manage and enrich the subscriber 
    experience.
    BNG separates subscriber access functions from provider services and yields these benefits:
    Comprehensive session management and billing functions are supported by means of 
    communication with an authentication, authorization, and accounting (AAA) server that is separate 
    from the BNG.
    Subscribers can obtain services based on their subscriber ID or a combination of their subscriber ID 
    and access line. 
    						
    							 
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    Cisco Prime Network 4.3.2 User Guide
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    Chapter 25      Monitoring BNG Configurations
      Working with BNG Configurations
    The network topology for BNG can be explained using the following models:
    BNG Retail Model—The subscriber connects to the network over a digital subscriber line (DSL) 
    circuit into a DSL access multiplexor (DSLAM), which aggregates a number of subscribers. The 
    DSLAMs are connected to an aggregation network, which grooms the subscriber traffic and 
    switches it to BNG. A sample of the retail model is shown in Figure 25-1.
    Figure 25-1 BNG Retail Model
    
    BNG Wholesale Model—The subscriber’s traffic is handed off by the carrier (who still owns the 
    infrastructure) to one of the several Internet Service Providers (ISP). There are different ways to 
    make this handoff, Layer 2 Tunneling Protocol (L2TP) or Layer 3 virtual private networking (VPN) 
    being two such methods.
    The BNG Retail model is used for deployment in Prime Network. 
    Prime Network provides BNG support for Cisco Aggregation Service Router (ASR) 9000 series network 
    elements.
    These topics provide an overview of the Broadband Network Gateway (BNG) technology and describe 
    how to monitor and view BNG configurations using the Vision client. If you cannot perform an operation 
    that is described in these topics, you may not have sufficient permissions; see Permissions for Managing 
    BNG, page B-22.
    Working with BNG Configurations, page 25-2
    Working with BNG Configurations
    This topic contains the following sections:
    Viewing Broadband Access (BBA) Groups, page 25-3
    Viewing Subscriber Access Points, page 25-4
    Diagnosing Subscriber Access Points, page 25-5
    Viewing Dynamic Host Configuration Protocol (DHCP) Service Profile, page 25-6
    Viewing Dynamic Config Templates, page 25-8
    COREAGG
    Phone
    PC STB/TV
    HGDSLAMBNG283650 
    						
    							 
    25-3
    Cisco Prime Network 4.3.2 User Guide
    OL-31018-01
    Chapter 25      Monitoring BNG Configurations
      Working with BNG Configurations
    Viewing Broadband Access (BBA) Groups
    BBA groups refer to the configuration settings applicable to a subscriber session that are accessing the 
    network through an access interface. The same group can be applied to multiple access interfaces. For 
    example, the maximum session limit for an access interface.
    To view the BBA group profile:
    Step 1Right-click on the device and choose the Inventory option. 
    Step 2In the Inventory window, choose Logical Inventory>BNG>BBA Groups. A list of BBA groups is 
    displayed in the content pane as shown in Figure 25-2.
    Figure 25-2 BBA Groups Content Pane
    Step 3
    Right-click a group from the list and choose Properties. The BBA Group Properties dialog box is 
    displayed.
    Table 25-1 describes the fields that are displayed in the BBA Group Properties dialog box. 
    						
    							 
    25-4
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    Chapter 25      Monitoring BNG Configurations
      Working with BNG Configurations
    Viewing Subscriber Access Points
    Subscriber access points refer to the access interfaces that are named based on the parent interface. For 
    example, bundle-ether 2.100.pppoe312. The subscribers on bundles (or bundle-VLANs) interfaces allow 
    redundancy and are managed on the route processor (RP). However, the subscribers over physical 
    interfaces are created and managed on the line card (LC) and are not redundant.
    To view the subscriber access points profile:
    Step 1Right-click on the device and choose the Inventory option. 
    Step 2In the Inventory window, choose Logical Inventory>BNG>Subscriber Access Points. A list of 
    access points is displayed in the content pane.
    Step 3Right-click the access point from the list and choose Properties. The Subscriber Access Point Properties 
    dialog box is displayed.
    Table 25-2 describes the fields that are displayed in the Subscriber Access Point Properties dialog box.
    Table 25-1 BBA Group Properties
    Field Name Description
    Name The name of the BBA Group.
    MTU  (Bytes) The default maximum payload, which can be any value between 500 and 
    2000.
    Service Name The name of the service configured under the specified BBA group.
    Maximum Access 
    Interface LimitThe maximum limit of PPP over Ethernet (PPPoE) sessions on the 
    access interface.
    Maximum Circuit ID 
    LimitThe maximum limit of PPPoE sessions for the circuit ID.
    Maximum Session 
    LimitThe maximum session limit per card. A warning is displayed if the 
    session exceeds the limit specified here.
    Maximum MAC 
    Address Access LimitThe maximum limit for MAC address access. A warning is displayed if 
    the access exceeds the limit specified here.
    Maximum Payload 
    LimitThe maximum payload limit.
    Service Selection Indicates the status of advertising of unrequested services names. By 
    default, this service is enabled.
    Applied Interfaces
    Interface Name The name of the interface applied to the BBA Group.
    Entity Association The link to the applied interface. Click this hyperlink to view the 
    relevant node under the Subscriber Access Point node. 
    						
    							 
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    Chapter 25      Monitoring BNG Configurations
      Working with BNG Configurations
    Diagnosing Subscriber Access Points
    The following commands can be launched from the inventory by right-clicking the BNG > Subscriber 
    Access Points node and selecting the Commands > Diagnose option. Before executing any commands, 
    you can preview them and view the results. If desired, you can also schedule the commands. To find out 
    if a device supports these commands, see the Cisco Prime Network 4.3.2 Supported Cisco VNEs.
    Table 25-2 Subscriber Access Point Properties
    Field Name Description
    Access Point The name of the access point.
    Associated Entity The link to the associated entity. Click this hyperlink to view the 
    associated Data Link Aggregation record under the Ethernet Link 
    Aggregation node.
    Access  Type The access type for the subscriber access point, which can be any one of 
    the following:
    PPPOE_AND_IP
    PPPOE
    IP
    Ingress Service Policy The service policy for the access point, which when clicked will display 
    the relevant policy under the Policy Container node. 
    Ingress QoS Policy The Quality of Service policy for the inbound traffic, which when 
    clicked will display the relevant policy under the Policy Container node. 
    Egress QoS Policy The Quality of Service policy for the outbound traffic of the access 
    point, which when clicked will display the relevant policy under the 
    Policy Container node. 
    BBA Group The BBA group to which the access point is associated. Click this 
    hyperlink to view the relevant group under the BBA group node.
    DHCP Profile The DHCP profile to which the access point is associated. Click this 
    hyperlink to view the relevant profile under the DHCP node.
    IP Address The destination address for User Datagram Protocol (UDP) broadcasts.
    VRF The Virtual Routing and Forwarding (VRF) in which the access points 
    operates.
    Table 25-3 Diagnose Subscriber Access Points
    Diagnose Command Input parameters
    Show DHCP BindingBinding Type
    Show IP Subscriber Management Trace
    Trace Event Type
    Trace Count 
    						
    							 
    25-6
    Cisco Prime Network 4.3.2 User Guide
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    Chapter 25      Monitoring BNG Configurations
      Working with BNG Configurations
    Viewing Dynamic Host Configuration Protocol (DHCP) Service Profile
    DHCP is used to automate host configuration by assigning IP addresses, delegating prefixes (in IPv6), 
    and providing extensive configuration information to network computers. 
    DHCP has the capability to allocate IP addresses only for a specified period of time, which is known as 
    the lease period. If a client device wants to retain the IP addresses for a period longer than the lease 
    period, then the client must renew the lease before it expires. A client can renew the lease depending on 
    the configuration time sent from the server. A REQUEST message is unicast by the client using the 
    servers IP address. On receiving the REQUEST message, the server responds with an acknowledgment, 
    and the clients lease is extended by the lease time configured in the acknowledgment message.
    To view the DHCP service profile:
    Step 1Right-click on the required device and choose the Inventory option.
    Step 2In the Inventory window, choose Logical Inventory > DHCP Service > DHCP Profiles - IPv4. A list 
    of DHCP profiles are displayed in the content pane as shown in Figure 25-3. Show PPoE Trace
    Trace Filter Type
    Trace Count
    Show Subscriber Dynamic Template Trace All
    Trace Filter Type
    Trace Event Type
    Trace Count
    Show Subscriber Manager Disconnect HistoryDisconnect History Filter Type
    Show Subscriber Manager Session History
    Session Type
    ID Value
    Show Subscriber Manager Trace
    Trace Filter Type
    Trace Event Type
    Trace Count
    Show Subscriber Session Details by Filter
    Session Filter Type
    Filter Value
    Filter State
    Table 25-3 Diagnose Subscriber Access Points (continued)
    Diagnose Command Input parameters 
    						
    							 
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    Chapter 25      Monitoring BNG Configurations
      Working with BNG Configurations
    Figure 25-3 DHCP Profiles
    Step 3
    Right-click a service from the list and choose Properties. The DHCP Profile Properties dialog box is 
    displayed. 
    Table 25-4 describes the fields that are displayed in the DHCP Profile Properties dialog box. 
    						
    							 
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    Chapter 25      Monitoring BNG Configurations
      Working with BNG Configurations
    Viewing Dynamic Config Templates
    A dynamic template is used to group configuration items, which are later applied to a group of 
    subscribers. This template is globally configured through the command line interface (CLI). However, 
    the template does not get applied to a subscriber interface as soon as it is configured. It must be activated 
    using a control policy. Similarly, you must deactivate the template using a control policy to remove its 
    association with the subscriber interface.
    Ideally, you can activate more than one dynamic template on the same subscriber interface, for the same 
    event or different events. The same dynamic-template can be activated on multiple subscriber interfaces 
    through the same control policy.
    Table 25-4 DHCP Profile Properties
    Field Name Description
    Profile Name The name of the DHCP profile.
    Profile  Type The network protocol that the profile belongs to. The profile type can be 
    IPV4 or IPV6.
    Agent Mode The DHCP agent mode, which can be Relay, Snoop or Proxy.
    Lease Limit The lease limit for the profile.
    Lease Limit Type The lease limit type.
    Relay Information 
    CheckIndicates whether the relay information check is enabled or disabled.
    Relay Information 
    PolicyThe relay information policy.
    DHCP Agent Information Options
    Option The relay agent information options key parameter.
    Value The value of the relay agent information options.
    Applied Interfaces
    Interface Name The name of the interface applied to the DHCP Group.
    Entity Association The link to the applied interface. Click this hyperlink to view the 
    relevant node under the Subscriber Access Point node.
    DHCP Servers
    Profile Class The profile class.
    Server Address The IP address of the profile, which is used to relay packets.
    VRF The VRF of the DHCP profile. Click this hyperlink to view the relevant 
    node under the VRFs node.
    Gateway Address The IP address of the gateway.
    Match Option The match option of the DHCP profile.
    Match Option Value The value of the match option.
    Match Option Mask The match option mask. 
    						
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