Avaya Configuring XNS Services User Manual download pdf (Page 30)

Configuring XNS Services

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303548-A Rev 00

A non-fully meshed network is a WAN in which one or more nodes do not have

logically direct connections to all other nodes. Figure 1-5 shows a sample

non-fully meshed network with Split Horizon disabled.

Figure 1-5. Split Horizon Disabled in a Non-Fully Meshed Network

If you enable Split Horizon on Router A, as in Figure 1-4, Router B will never

learn about Router C’s networks and vice versa. If users on Network 2 need to

communicate with users on Network 3, you must disable Split Horizon on Router

A, as in Figure 1-5. You do not, however, need to disable Split Horizon on Routers

B and C.

For More Information about XNS

The following documents provide technical detail on XNS protocol

implementation:

Xerox System Integration Standard. Xerox Corporation, December 1981.

Xerox Network Systems Architecture General Information Manual. Xerox

Corporation, 1985.

Split Horizon disabled on this

interface so that Router B can

learn about Network 3 and

Router C can learn about

Network 2.

Network

Router C

Router B

Router A

WAN

XNS0005A

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Avaya Configuring XNS Services User Manual Page 30