
Configuring IPX Services
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Figure 5-6 shows a sample non-fully meshed network with Split Horizon
disabled.
Figure 5-6. Split Horizon Disabled in a Non-Fully Meshed Network
If you disable IPX Split Horizon, IPX sends all router services over non-fully
meshed frame relay and X.25 topologies. For example, as shown in Figure 5-6
,
router A propagates RIP and SAP packets pertaining to router B to router C, and
vice versa. As a result, end stations on network 2 can learn about network 3, and
end stations on network 3 can learn about network 2.
When Split Horizon is enabled for an interface, routes learned on that interface are
not advertised out that interface.
Frame relay
Split Horizon disabled on this
interface so that Router B
can learn about Network 3 and
Router C can learn about
Network 2.
Network
1
Network
3
Network
2
Router B
Router C
Router A
IPX0008A
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