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#top route


route - show / manipulate the IP routing table

Powiązane:
ifconfig, ifenslave, ip, netstat, netstat-nat, route,

SYNOPSIS
route [-CFvnee]

route [-v] [-A family] add [-net|-host] target [netmask Nm] [gw Gw] [metric N] [mss M] [window W] [irtt I] [reject] [mod] [dyn] [reinstate] [[dev] If]

route [-v] [-A family] del [-net|-host] target [gw Gw] [netmask Nm] [metric N] [[dev] If]

route [-V] [--version] [-h] [--help]


DESCRIPTION



OPTIONS
-A family
use the specified address family (eg 'inet'; use 'route --help' for a full list).

-F
operate on the kernel's FIB (Forwarding Information Base) routing table. This is the default.

-C
operate on the kernel's routing cache.

-v
select verbose operation.

-n
show numerical addresses instead of trying to determine symbolic host names. This is useful if you are trying to determine why the route to your nameserver has vanished.

-e
use netstat(8)-format for displaying the routing table. -ee will generate a very long line with all parameters from the routing table.

del
delete a route.

add
add a new route.

target
the destination network or host. You can provide IP addresses in dotted decimal or host/network names.

-net
the target is a network.

-host
the target is a host.

netmask NM
when adding a network route, the netmask to be used.

gw GW
route packets via a gateway. NOTE: The specified gateway must be reachable first. This usually means that you have to set up a static route to the gateway beforehand. If you specify the address of one of your local interfaces, it will be used to decide about the interface to which the packets should be routed to. This is a BSDism compatibility hack.

metric M
set the metric field in the routing table (used by routing daemons) to M.

mss M
set the TCP Maximum Segment Size (MSS) for connections over this route to M bytes. The default is the device MTU minus headers, or a lower MTU when path mtu discovery occured. This setting can be used to force smaller TCP packets on the other end when path mtu discovery does not work (usually because of misconfigured firewalls that block ICMP Fragmentation Needed)

window W
set the TCP window size for connections over this route to W bytes. This is typically only used on AX.25 networks and with drivers unable to handle back to back frames.

irtt I
set 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.

reject
install a blocking route, which will force a route lookup to fail. This is for example used to mask out networks before using the default route. This is NOT for firewalling.

mod, dyn, reinstate
install a dynamic or modified route. These flags are for diagnostic purposes, and are generally only set by routing daemons.

dev
If force the route to be associated with the specified device, as the kernel will otherwise try to determine the device on its own (by checking already existing routes and device specifications, and where the route is added to). In most normal networks you won't need this.

If dev If is the last option on the command line, the word dev may be omitted, as it's the default. Otherwise the order of the route modifiers (metric - netmask - gw - dev) doesn't matter.



EXAMPLES
display IPv4 routing table (like: netstat -rn)
route -n

display IPv4 routing table (like: netstat -A inet -rn)
route -n -A inet

display IPv6 routing table (like: netstat -A inet6 -rn)
route -n -A inet6

route add / route del - add / del a route
route add default gw IPv4-GW
route del default gw IPv4-GW
route add default gw IPv4-GW dev IFACE
route del default gw IPv4-GW dev IFACE


route add -net NETv4/PREFIX gw IPv4-GW
route del -net NETv4/PREFIX gw IPv4-GW
route add -net NETv4/PREFIX gw IPv4-GW dev IFACE
route del -net NETv4/PREFIX gw IPv4-GW dev IFACE


route add -net NETv4 netmask NETMASK gw IPv4-GW
route del -net NETv4 netmask NETMASK gw IPv4-GW
route add -net NETv4 netmask NETMASK gw IPv4-GW dev IFACE
route del -net NETv4 netmask NETMASK gw IPv4-GW dev IFACE



Zmodyfikowany ostatnio: 2015/11/16 01:15:53 (8 lat temu), textsize: 5,62 kB, htmlsize: 7,07 kB
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