Nortel Passport 4400 Using Manual page 116

116
Routing Mode
Routing mode requires the following IP address assignments:
IP Address
LAN IP Address
PPP IP Address
WAN IP Address
206906-D Rev 00 4.2
Description
Passport 4400 routing mode requires one or more LAN IP
addresses. If the unit is multihomed, each of the IP addresses
must be in a distinct LAN segment.
For example, if the Subnet Mask is 255.255.255.0, then
192.168.111.31 and 192.168.111.32 are in the same LAN
segment, whereas 192.168.222.33 is in a different LAN
segment.
This is the IP address of the PPP segment. It must be in a
different segment from the WAN IP address and LAN IP
addresses that you configure. By default, the Passport 4400
assigns 192.168.200.200 to this segment. If you plan to use this
segment to access remote Passport 4400s, you must change
this IP address to avoid IP address conflicts with other
Passport 4400s.
Install Tool automatically calculates an IP address mask and a
broadcast address for the PPP segment.
Note: The Passport 4400 assigns an IP address to the PC at the
time a connection is established. This address is equal to the
PPP IP address plus one. For example, if you assign
192.168.10.10 to the PPP segment, the Passport 4400 assigns
192.168.10.11 to the PC. The PC IP address is not used in
routing mode.
This is the IP address of the WAN segment. It must be on a
different segment from the LAN IP addresses and the PPP IP
address that you configure.
If you are configuring a central node, you will assign a WAN IP
address to each link. Each address must be in the same
segment as the WAN IP address at the other end of the link.