User guide

Provisioning the iMG/RG Provisioning Strategy
649
AlliedView NMS Administration Guide
• Profiles - A set of profiles is created that provides a set of templates that, when applied, ensure the RG is provisioned for
a specific service type with the correct attributes. There are two main profile types:
• General - These are always associated with an RG regardless of the services offered.
• Service specific - These are associated with an RG only when a specific service is to be configured.
• Triple-Play form - This form, used in previous releases to streamline provisioning of the iMAP port types, is extended to
include RG attributes. In most cases the attributes that appear and are data filled are driven by the profiles that are
included with the form.
• DHCP Discovery - Ensuring the iMG/RG is configured with the correct software and IP address is done as part of the
DHCP messaging that takes place between the iMG/RG, DHCP server, and the AlliedView NMS with its tftp server. The
series of events during DHCP ensures that the RG is correctly configured and the AlliedView NMS has created an icon of
the RG that shows where it is connected to an iMAP system.
7.2.2 Deployment Models (Access Islands, Open Access, multi-service VLANs)
7.2.2.1 Access Islands
Since a large deployment of RGs can involve many business customers and residential subscribers, there is a network
hierarchy model that, when used and labeled correctly, can help network administrators set up and track the high number
(up to many thousand) of RGs. Refer to the following figure.
FIGURE 7-1 Network Hierarchy Model for Large Deployment of RGs - Access Islands
For each service provider’s wiring center exchange, there can be a Provider Edge-Access Network (PE-AN), and these can
be divided into Multi-service Access Island Networks. These Access Islands are basically one leaf of the larger network, and
can be the initial configuration when a small number of RGs are initially deployed. With growth, a PE-AN could service, for
example, 15,000 customers, which each island supporting 1000.
Note: So with this configuration, there can be up to 15 Access Island networks. This concept is used during provisioning.
Usually, one or two GbE or 10GbE Level-3 routers (PE-R) can be used to service the entire PE-AN; with this design the
number of anticipated advanced subscriber services will determine the size and capabilities of the required provider edge
router.
Note: Each Access Island uses a set of VLAN numbers unique to that Access Island; the next Access Island uses VLAN numbers that
are usually the next number up. For example, Access Island one (AI01) could use a set of VLANs (201, 301, 401, 501, and
601) for DHCP discovery and the subscriber services. The next Access Island would use 202, 302, etc. The exception would
be when the PE Router (L3) supports a Virtual Routing Function (VRF) and therefore sufficient multicast routing capabilities.