no auto-summary

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 summarization, 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 19‐19. The reverse of the command re‐enables automatic route summarization. By default, RIP auto‐ summarization affects both RIPv1 and RIPv2 routes.

Note: This command is necessary for enabling CIDR for RIP on the SecureStack C3 device.

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

split-horizon poison

Use this command to enable or disable split horizon poison‐reverse mode for RIP packets. The no form of this command disables split horizon poison reverse.

Syntax

split-horizon poison no split-horizon poison

Parameters

None.

Defaults

None.

SecureStack C3 Configuration Guide 20-7

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Enterasys Networks 9034313-07 manual No auto-summary, Split-horizon poison, Router configuration C3su‐routerConfig‐router#