3Com 2500 manual Enabling Disabling IP Routing

9-20 CHAPTER 9: ADMINISTERING IP ROUTING

Setting the BOOTP Hop Count Limit

Top-Level Menu
system
ethernet	interface
fddi	route
		display
atm	arp
		define
bridge	atmArpServer
		remove
➧ip	multicast
		➧hopCountLimit
ipx	➧udpHelper
appletalk	routing	threshold
snmp	icmpRouterDiscovery
analyzer	rip
script	ping
logout	statistics

Setting the BOOTP Relay Threshold

Top-Level Menu
system
	interface
ethernet
	route
fddi		display
	arp
atm		define
	atmArpServer
bridge		remove
	multicast
➧ip		hopCountLimit
	➧udpHelper
ipx		➧threshold
appletalk	routing
	icmpRouterDiscovery
snmp
	rip
analyzer
	ping
script
	statistics
logout

You can set the maximum hop count for a packet to be forwarded through the router. The range is 0 through 16. The default is 4.

To set the hop count limit:

1From the top level of the Administration Console, enter:

ip udpHelper hopCountLimit

2 Enter the BOOTP relay hop count limit.

You can set the maximum time limit that a packet is forwarded through the router. If you use 0 as threshold value, the router ignores the seconds field. If you use a non zero value, the router uses that value along with the hop count value to determine whether to forward the UDP packet.

To set the BOOTP relay threshold:

1 From the top level of the Administration Console, enter:

ip udpHelper threshold

2Enter the BOOTP relay threshold value.

Enabling and

Disabling IP

Routing

Top-Level Menu

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

You can control whether the system forwards or discards IP packets addressed to other hosts. When you enable IP routing, the switching module acts as a normal IP router, forwarding IP packets from one subnet to another when required. When you disable IP routing, the system discards any IP packets not addressed directly to one of its defined IP interfaces.

By default, IP routing is disabled on the system.

To enable or disable IP routing:

1From the top level of the Administration Console, enter:

ip routing

2Enter the IP routing state (enable or disable).