Specifications

no auto-summary
16-8 IPv4 Routing Protocol Configuration
no auto-summary
Usethiscommandtodisableautomaticroutesummarization.
Syntax
no auto-summary
auto-summary
Parameters
None.
Defaults
None.
Mode
Routerconfiguration:C3(su)‐>router(Config‐router)#
Usage
Bydefault,RIPversion2supportsautomaticroutesumm arization,whichsummarizes
subprefixestotheclassfulnetworkboundarywhencrossingnetworkboundaries.Disabling
automaticroutesummarizationenablesCIDR,allowingRIPtoadvertiseallsubnetsandhost
routinginformationontheSecureStackC3device.Toverifywhichroutesaresummarizedforan
interface,
usetheshowiproutecommandasdescribedin“showiproute”onpage15‐19.The
reverseofthecommandre‐enablesautomaticroutesummarization.
Example
ThisexampleshowshowtodisableRIPautomaticroutesummarization:
C3(su)->router(Config)#router rip
C3(su)->router(Config-router)#no auto-summary
Note: This command is necessary for enabling CIDR for RIP on the SecureStack C3 device.