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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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							CH A P T E R
 
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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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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 
						

							 
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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. 
						

							 
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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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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 
						

							 
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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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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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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.