Cisco 700 series Ikhtisar - Halaman 9

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Cisco 700 series Ikhtisar
Service Advertising Protocol (SAP) Helper
Cisco 700 series routers can forward to a specified router or server (instead of responding
to them) all SAP get-nearest-service request broadcast packets and get general service
request broadcast packets to an IPX router or IPX server as unicast packets. Cisco 700
series routers forward these request packets without looking in the local SAP table. The
parameters are set using the set ipx sap helper command.

Route Summarization

Route summarization is provided on IP RIP Version 2 (only Version 2 provides the required
subnet mask information). When route summarization is set to auto, the router summarizes
routes that cross the classful boundary to a single route based on the classful boundary.
When route summarization is set to off, the router uses the normal RIP Version 2 routes
with variable-length subnet masks (VLSMs). The default setting for RIP summarization is
OFF. Use the set ip rip summarization command to control this feature.

Data Compression

Cisco 700 series routers support data compression using the compression algorithm
QIC-122 standard, Stacker LZS. Data compression is a software configuration option that
optimizes the ISDN line bandwidth. Packets are compressed before being sent onto the
ISDN line. After they arrive at their destination, the packets are decompressed and sent on
to the remote LAN.

Security Features

Cisco 700 series routers provide the following security features:
•
PPP authentication support, including Password Authentication Protocol (PAP) and
Challenge Handshake Authentication Protocol (CHAP)
•
Password security for local and remote configuration access
•
IP filtering based on source and destination addresses, source and destination ports, and
packet types
Overview of Cisco 700 Series Routers 1-9
Security Features