3Com 2500 manual Enabling and Disabling ICMP Router Discovery, Setting the RIP, Mode

Enabling and Disabling ICMP Router Discovery 9-21

Enabling and

Disabling ICMP

Router Discovery

Top-Level Menu

system
	interface
ethernet
	route
fddi
	arp
atm
	atmArpserver
bridge
	multicast
➧ip
	udpHelper
ipx
	routing
appletalk
	➧icmpRouterDiscovery
snmp	rip
analyzer
	ping
script
	statistics
logout

The Internet Control Message Protocol (ICMP) Router Discovery protocol (RFC 1256) allows an appropriately configured end station to locate one or more routers on the LAN to which it is attached. The end station then automatically installs a default route to each of the routers running ICMP Router Discovery. You do not need to manually configure a default route. While IP traffic may initially be directed to any of the routers on the LAN, ICMP redirect messages will subsequently channel the IP traffic to the correct router.

Only certain end stations, such as Solaris® workstations, can be configured to work with the ICMP Router Discovery protocol. Refer to the documentation for your workstation to determine whether you can configure it to work with this protocol.

To enable ICMP Router Discovery, from the top level of the Administration Console, enter

ip icmpRouterDiscovery

Enter the ICMP Router Discovery mode (enabled or disabled). This protocol is disabled by default.

Setting the RIP	You can select a RIP mode that is appropriate for your network. RIP can
Mode	operate in any of three modes:

■Off — The station ignores all incoming RIP packets and does not generate any RIP packets of its own.

■Active — The station processes all incoming RIP packets, responds to explicit requests for routing information, and broadcasts periodic and triggered RIP updates.

■Passive — The station processes all incoming RIP packets and responds to explicit requests for routing information, but it does not broadcast periodic or triggered RIP updates.