Enabling and Disabling ICMP Router Discovery 10-19
Enabling and
Disabling ICMP
Router Discovery
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
installs a default route to each of the routers that is 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 subsequently channel 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).
Default This protocol is disabled by default.
Configuring RIP With Extended Switching software you can configure IP Routing
Information Protocol (RIP) on individual interfaces, rather than turning it
on or off for all interfaces.
Displaying the RIP
Interface
Configuration
To display RIP interface configuration information, from the top level of
the Administration Console, enter:
ip rip display
Example RIP display:
Top-Level Menu
system
ethernet
fddi
atm
bridge
➧ip
ipx
appletalk
snmp
analyzer
script
logout
interface
route
arp
atmArpServer
multicast
udphelper
routing
➧icmpRouterDiscovery
ospf
rip
ping
statistics
Top-Level Menu
system
ethernet
fddi
atm
bridge
➧ip
ipx
appletalk
snmp
analyzer
script
logout
interface
route
arp
atmArpServer
multicast
udpHelper
routing
icmpRouterDiscovery
ospf
➧rip
ping
statistics
➧display
mode
cost
poisonReverse
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statistics
IP routing is enabled, ICMP router discovery is disabled
RIP interface information:
Index Mode Cost PoisonReverse AdvertisementAddress
1 active 1 enabled 158.101.112.255
2 off 1 disabled 158.101.142.255
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