User`s guide

Configuring IP Routing
Introduction to IP routing on the Pipeline
Pipeline User’s Guide Preliminary January 30, 1998 2-7
The “0” address for this subnet is 192.168.8.64.The broadcast address must be
the network base address plus six ones (six ones in base 2 equals 63 decimal, and
64+63=127) 192.168.8.127.
Note:
Early implementations of TCP/IP did not allow zero subnets. That is,
subnets could have the same base address that a class A, B, or C network would
have. For example, the subnet 192.168.8.0/30 was illegal because it had the same
base address as the class C network 192.168.8.0/24, while 192.168.8.4/30 was
legal. (192.168.8.0/30 is called a zero subnet, because like a class C base address,
its last octet is zero.) Modern implementations of TCP/IP allow subnets to have
base addresses that might be identical to the class A, B, or C base addresses.
Ascend's implementations of RIP 2 treats these so-called zero subnetworks the
same as any other network. However, it is important that you treat zero subnets
consistently throughout your network. Otherwise, you will encounter routing
problems.
IP routing in the Answer profile
Before the Pipeline answers an incoming call, it checks the settings in its Answer
profile for information about what to do. If the call does not include the
information required by the Answer profile, the Pipeline hangs up.
The parameters listed below are related to IP routing in the Answer profile. (For
detailed information about each parameter, see the Reference Guide. You might
also want to refer to other sections in this guide, including, “Configuring RIP for
incoming WAN connections” on page 2-22, for setting the RIP parameter in the
Answer profile, and for authentication, Chapter 7, “Setting Up Pipeline
Security.”)
• Ethernet > Answer > Session Options
RIP=Off
•Ethernet
>
Answer
>
PPP Options
Route IP=Yes
Recv Auth=Either
To enable the Pipeline to answer incoming IP routing calls:
1
Open the Ethernet > Answer > PPP Options menu.
2
Turn on IP Routing.