
Configuring AppleTalk Services
2-30 117366-A Rev. A
Figure 2-21. AppleTalk Routers in a Non-Fully Meshed Frame Relay
Topology
For example, if you enable Split Horizon on Interface 1.1, then Router A learns
about Router B and Router C; however, Router B does not learn about Router C
(and vice versa). For all routers to learn about each other, you must disable Split
Horizon for Interface 1.1, and you must statically configure Network ID and Node
ID for Interfaces 1.1, 1.2, and 1.3.
See “Editing AppleTalk Interface Parameters” in Chapter 4 for instructions on
how to set the Enable Split Horizon, Network ID, and Node ID parameters.
Reducing Excess Routing Traffic on a Large AppleTalk Network
If you are adding Bay Networks AppleTalk routers to a large internet (such as one
that has more than 200 routers and networks), consider the following network
configuration tips to reduce the amount of routing traffic on your network:
• Keep the physical network topology as hierarchical as possible. Using a
functional (organizational) hierarchy isolates groups on the network and
reduces the amount of excess broadcast traffic.
• Reduce the number of devices on a single physical network (or bridged
network) by dividing the internet into a greater number of networks. This also
helps to reduce the amount of traffic that is broadcast to all nodes on the
network.
• Limit the amount of Name Binding Protocol traffic on the network; avoid
configuring the same zone on multiple networks. Instead, keep the ratio of
zones to networks as close to 1:1 as possible.
Router A
Disable split horizon
Router B
Router C
1.1
1.2
1.3
Frame Relay
Network 1-1
APT0031A
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