Replacements for Linux Commands : Part 3

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Route

Deprecated route commands	Replacement
route . Displays the host’s routing tables.	ip route
route -A [family] [add] or route –[family] [add] . Uses the specified address family with add or del. Valid families are inet (DARPA Internet), inet6 (IPv6), ax25 (AMPR AX.25), netrom (AMPR NET/ROM), ipx (Novell IPX), ddp (Appletalk DDP), and x25 (CCITT X.25).	ip -f [family] route . [family] can be inet (IP), inet6 (IPv6), or link. Additionally, -4 = -f inet and -6 = -f inet6.
route -C or –cache . Operates on the kernel’s routing cache instead of the forwarding information base (FIB) routing table.	Not apparent; ip route show cache dumps the routing cache.
route -e or -ee . Uses the netstat-r format to display the routing table. -ee will generate a very long line with all parameters from the routing table.	ip route show
route -F or –fib . Operates on the kernel’s Forwarding Information Base (FIB) routing table (default behavior).	Not apparent
route -h or –help . Prints the help message.	ip route help
route -n . Shows numerical IP addresses and bypass host name resolution.	Not apparent
route -v or –verbose . Enables verbose command output.	ip -s route
route -V or –version . Dispays the version of net-tools and the route command.	ip -V
route add or del . Adds or delete a route in the routing table.	ip route [add | chg | repl | del] [ip_addr] via [ip_addr]
route [add or del] dev [interface] . Associates a route with a specific device. If dev [interface] is the last option on the command line, the word dev may be omitted.	ip route [add | chg | repl | del] dev [interface]
route [add or del] [default] gw [gw] . Routes packets through the specified gateway IP address.	ip route add default via [gw]
route [add or del] -host . Specifies that the target is a host (not a network).	Not apparent
route [add or del] -irtt [I] . Sets the initial round trip time (IRTT) for TCP connections over this route to [I] milliseconds (1-12000). This is typically only used on AX.25 networks. If omitted the RFC 1122 default of 300ms is used.	Not apparent; ip route [add | chg | repl | del] rtt [number] sets the RTT estimate; rttvar [number] sets the initial RTT variance estimate.
route [add or del] -net . Specifies that the target is a network (not a host).	Not apparent
route [add or del] [-host or -net] netmask [mask] . Sets the subnet [mask].	Not apparent
route [add or del] metric [n] . Sets the metric field in the routing table (used by routing daemons) to the value of [n].	ip route [add | chg | repl | del] metric [number] or preference [number]
route [add or del] mod, dyn, or reinstate . Install a dynamic or modified route. These flags are for diagnostic purposes, and are generally only set by routing daemons.	Not apparent
route [add or del] mss [bytes] . Sets the TCP Maximum Segment Size (MSS) for connections over this route to the number of [bytes] specified.	ip route [add | chg | repl | del] advmss [number] (the MSS to advertise to these destinations when establishing TCP connections).
route [add or del] reject . Installs a blocking route, which will force a route lookup to fail. This is used to mask out networks before using the default route. This is not intended to provide firewall functionality.	ip route add prohibit [network_addr]
route [add or del] window [W] . Set the TCP window size for connections over this route to the value of [W] bytes. This is typically only used on AX.25 networks and with drivers unable to handle back-to-back frames.	ip route [add | chg | repl | del] window [W]

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Some examples of ip route command syntax are as follows.
# ip route add 10.23.30.0/24 via 192.168.8.50
# ip route del 10.28.0.0/16 via 192.168.10.50 dev eth0
# ip route chg default via 192.168.25.110 dev eth1
# ip route get [ip_address] (shows the interface and gateway that would be used to reach a remote host. This command would be especially useful for troubleshooting routing issues on hosts with large routing tables and/or with multiple network interfaces).

So here i guess the articles was understanble to you. Sorry for the formatting mistakes, Have fun.