3Com 10014299 manual Enabling Route, Summarization for RIP, Version, Authentication on

418CHAPTER 28: CONFIGURING RIP

Disable receiving host routes	undo host-route
Enable receiving host routes	host-route

By default, the router is enabled to receive the host routes.

Enabling Route	Route summarization summarizes the routes of different subnets within the same
Summarization for RIP	natural network segment and sends the summary to other network segments as a
Version 2	summarized route with a natural mask. Route summarization largely reduces the
	network expenditure and the routing table size.
	RIP-1 always sends routes with natural mask. RIP-2 supports sub-net mask and
	routs of unknown category. If the sub-net route needs to be broadcast, RIP-2 route
	summary function can be disabled.
	Perform the following configurations in RIP view.
	Table 476 Enable Route Summarization
	Operation	Command
	Enable automatic route summarization	summary
	Disable the automatic summarization	undo summary
	function of RIP-2
	By default, RIP-2 automatic route summarization is enabled.
Configuring RIP-2 Packet	Authentication for packets is not supported by RIP Version 1. But RIP Version 2
Authentication on the	supports authentication.
Interface	RIP Version 2 supports authentication in two modes: simple text authentication
	and MD5 authentication. Security is not ensured in simple text authentication.
	Simple text means that the unencrypted authentication is transmitted with the
	packets, therefore simple text authentication does not apply to a situation that
	requires a high level of security. MD5 authentication has two message formats, in
	compliance of the requirements of RFC1723 (RIP Version 2 Carrying Additional
	Information) and RFC2082 (RIP Version 2 MD5 Authentication).
	3Com routers support both formats.
	Perform the following configurations in interface view.
	Table 477 Configure Authentication for RIP Version 2
	Operation	Command
	Specify a password for RIP Version 2	rip authentication-mode simple
	simple text authentication	password
	Specify a key-string for RIP Version 2 MD5	rip authentication-mode md5
	authentication	key-string string
	Set the packet format type of RIP-2 MD5	rip authentication-mode md5 type [
	authentication	nonstandard usual ]
	Cancel authentication for RIP Version 2	undo rip authentication-mode

By default, RIP Version 2 packets are not authenticated on an interface. If MD5 authentication type is not specified, the nonstandard authentication type is used by the router.