3Com 10014298 Configuring Split Horizon, By default, split horizon of the interface is enabled

RIP 95

■MD5 authentication — This mode uses two packet formats: One format follows RFC1723 (RIP Version 2 Carrying Additional Information); the other format follows RFC2082 (RIP-2 MD5 Authentication).

Perform the following configuration in VLAN interface view

Table 92 Setting RIP-2 Packet Authentication

Operation	Command
Configure RIP-2 simple authentication key	rip authentication-mode simple
	password-string
Configure RIP-2 MD5 authentication with	rip authentication-mode { simple
packet type following RFC 1723	password md5 { usual key-string
	nonstandard key-string key-id }
	}

Configure RIP-2 MD5 authentication with packet type following RFC 2082

rip authentication-mode { simple password md5 { usual key-string nonstandard key-stringkey-id }

}

Set the packet format type of RIP-2 MD5 authentication

rip authentication-mode { simple password md5 { usual key-string nonstandard key-stringkey-id }

}

Cancel authentication of RIP-2 packet undo rip authentication-mode

The usual packet format follows RFC1723 and nonstandard follows RFC2082.

Configuring Split Horizon

Split horizon means that the route received through an interface will not be sent through this interface again. The split horizon algorithm can reduce the generation of routing loops, but in some special cases, split horizon must be disabled to obtain correct advertising at the cost of efficiency. Disabling split horizon has no effect on the P2P connected links but is applicable on the Ethernet.

Perform the following configuration in VLAN interface view.

Table 93 Configuring Split Horizon

Operation	Command
Enable split horizon	rip split-horizon
Disable split horizon	undo rip	split-horizon

By default, split horizon of the interface is enabled.

Enabling RIP to Import Routes of Other Protocols

RIP allows users to import the route information of other protocols into the routing table.

RIP can import direct and static routes.