December 2000
Intermediate to advanced
360 pages
10h 29m
English
Content preview from Cisco Router Configuration, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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SAP Filters
The Cisco IOS permits a network administrator to filter on the basis of which SAP services a device sends from and receives into its SAP table. SAP filters are commonly used on an internetwork to limit the amount of SAP traffic sent and received by a router.
Many IPX networks use SAP filters to reduce the number of SAP messages sent over WAN interfaces, thereby reducing traffic load. Filtering received SAP advertisements can reduce the number of IPX services a router has in RAM and can provide limited network security. The limited network security is accomplished by not allowing the IOS device to provide SAP table entries for services that want to remain somewhat hidden on an IPX network. For more information on filtering IPX packets, ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.