Motorola NVG510 User Manual download pdf (Page 34)

Enable Public Routed Sub-interface

1. Determine the Public IP block information to configure in the

Residential Gateway. (example x.x.x.x /29)

The RG will use two sets of Public IP addresses, one IP for use between the router and the broadband network (WAN

side)and a second independent set of Public Static IP addresses solely for use on the LAN side. The WAN side IP is a

Dynamically assigned IP address that is “sticky” It should change only under certain conditions. Some of those

conditions are

• The RG is swapped

• The VDSL port is swapped at the DSLAM

• The RG is offline for an extended time which could then fail to renegotiate its IP lease.

The Public / Static IP block will be dynamically mapped and routed to the WAN IP and a single IP out of the block will be

assigned to a virtual port on the LAN side of the RG. That IP will be the gateway for the rest of the devices using the

Static IP block behind the RG. Typically we use the next to last IP in the block for this Gateway IP.

NOTE – if using Cascaded Router config (discussed later) instead of keeping an IP out of the Static IP block to act as a gateway

the RG will hand the entire block off to a 3

party router connected to the Arris RG or modem via private IP, for use on the LAN

side of the 3

party router.

This section would have been completed by the U-verse installer and is

provided here for reference to verify it is configured as suggested. Also

in case of a factory reset where it is required to be reconfigured.

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Motorola NVG510 User Manual Page 34