Service Provider Environment; Table 5 Subnet Assignments - Nortel Contivity 1100 Configuration Manual

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After the central office setup and the BOQS are complete, the Nortel VPN
Router1010, 1050, or 1100 is directly accessible from the central office. This
means that there is just one hop between the central office and the branch office.
RIP propagates routes to this subnet across the tunnel created by BOQS.
You must have at least two more IP addresses than IP workstations on the Nortel
VPN Router 1010, 1050, or 1100 private network. The first address from the
subnet is assigned to the private interface of the branch office switch and the
second address becomes the management IP address of the switch. Each branch
office must be in its own subnet.
Table 5
subnets assigned.

Table 5 Subnet assignments

Private
Private Network
Network IP
IP Mask
address
200.1.1.0 255.255.255.192
200.1.1.64 255.255.255.192
200.1.1.128 255.255.255.192

Service provider environment

Service providers generally have an isolated NOC from which all devices are
managed. The addressing scheme could be different from a central office and
require a separate designated tunnel to configure the Nortel VPN Router 1010/
1050/1100 series of switches.
Chapter 3 Setting up the Nortel VPN Router 1010, 1050, and 1100 63
Set the Text Pre-Shared Key to the same name as central office tunnel
password.
Set Dynamic Routing to enabled.
Set RIP to enabled.
shows how offices with approximately 50 workstations can each have
Nortel VPN
Router1010/1050/
1100 Private
Interface Address
200.1.1.1
200.1.1.65
200.1.1.129
Nortel VPN
Router1010/1050/
1100 Management
Interface Address
200.1.1.2
200.1.1.66
200.1.1.130
Nortel VPN Router Configuration — Basic Features
BO Workstations
Addresses (assigned
by DHCP Server)
From 200.1.1.3 to
200.1.1.62
From 200.1.1.67 to
200.1.1.126
From 200.1.1.131 to
200.1.1.190