To reduce the frequency of SAP updates in a
network that uses Cisco routers, perform the following steps:
- Enable EIGRP for IPX, as discussed
earlier.
- Select the interface on which you want
the SAP updates to be sent incrementally.
- Instruct the router to issue SAP
updates only when a change occurs in the network, instead of the
periodic update interval:
router(config-if)#ipx
sap-incremental eigrp autonomous-system-number [rsup-only]
LAN interfaces, such as Ethernet, Token
Ring, and FDDI, have the rsup-only feature turned off by default.
WAN links have the rsup-only feature turned on by default. When
incremental updates are enabled on a LAN interface, another peer IPX EIGRP
router should be present on that media. If an incremental update is
enabled and no peer router is available, periodic SAP updates will not be
sent. If a peer router becomes available, incremental updates will then be
sent.
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