routing.7 (2010 09)

ManualsBrandsHP ManualsSoftwareHP-UX Manpages

routing(7) routing(7)

NAME

routing - system support for local network packet routing

DESCRIPTION

The network facilities for HP-UX provide general packet routing support. Routing table maintenance is

handled by application processes.

A routing table consists of a set of data structures used by the network facilities to select the appropriate

remote host or gateway when transmitting packets. The table contains a single entry for each route to a

speciﬁc network or host, as displayed by the

netstat command with the -r or -rn options (see

netstat (1)). Routes that are not valid are not displayed.

_______________________________________________________________

# netstat -r

Routing tables

Destination Gateway Flags Refs Use Interface Pmtu

hpindwr.cup.hp.com

localhost UH 1 39 lo0 4608

localhost localhost UH 0 68 lo0 4608

147.253.56.195 localhost UH 0 0 lo0 4608

147.253.144.66 localhost UH 0 0 lo0 4608

default hpinsmh.cup.hp.com

UG 1 21 lan0 1500

15.13.136 hpindwr.cup.hp.com

U 1 92 lan0 1500

147.253.56 147.253.56.195 U 0 7 lan2 1500

147.253.144.64 147.253.144.66 U 0 7 lan1 1500

_______________________________________________________________

# netstat -rn

Routing tables

Destination Gateway Flags Refs Use Interface Pmtu

15.13.136.66 127.0.0.1 UH 1 39 lo0 4608

127.0.0.1 127.0.0.1 UH 0 68 lo0 4608

147.253.56.195 127.0.0.1 UH 0 0 lo0 4608

147.253.144.66 127.0.0.1 UH 0 0 lo0 4608

default 15.13.136.11 UG 2 30 lan0 1500

15.13.136.0 15.13.136.66 U 1 113 lan0 1500

147.253.56.0 147.253.56.195 U 0 7 lan2 1500

147.253.144.64 147.253.144.66 U 0 7 lan1 1500

_______________________________________________________________

# netstat -rv

Routing tables

Dest/Netmask Gateway Flags Refs Use Interface Pmtu

hpindwr.cup.hp.com/0xffffffff

localhost UH 1 39 lo0 4608

localhost/0xffffffff

localhost UH 0 68 lo0 4608

147.253.56.195/0xffffffff

localhost UH 0 0 lo0 4608

147.253.144.66/0xffffffff

localhost UH 0 0 lo0 4608

default/0x00000000

hpinsmh.cup.hp.com

UG 2 31 lan0 1500

15.13.136/0xfffff800

hpindwr.cup.hp.com

U 1 129 lan0 1500

147.253.56/0xfffffe00

147.253.56.195 U 0 7 lan2 1500

147.253.144.64/0xfffffff0

147.253.144.66 U 0 7 lan1 1500

HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1

Summary of content (6 pages)

PAGE 1
routing(7) routing(7) NAME routing - system support for local network packet routing DESCRIPTION The network facilities for HP-UX provide general packet routing support. Routing table maintenance is handled by application processes. A routing table consists of a set of data structures used by the network facilities to select the appropriate remote host or gateway when transmitting packets.
PAGE 2
routing(7) routing(7) _______________________________________________________________ # netstat -rnv Routing tables Dest/Netmask Gateway Flags Refs Use Interface Pmtu 15.13.136.66/255.255.255.255 127.0.0.1 UH 1 39 lo0 4608 127.0.0.1/255.255.255.255 127.0.0.1 UH 0 68 lo0 4608 147.253.56.195/255.255.255.255 127.0.0.1 UH 0 0 lo0 4608 147.253.144.66/255.255.255.255 127.0.0.1 UH 0 0 lo0 4608 default/0.0.0.0 15.13.136.11 UG 3 40 lan0 1500 15.13.136.0/255.255.248.0 15.13.136.66 U 1 153 lan0 1500 147.253.56.
PAGE 3
routing(7) Count =0 >0 =0 >0 =0 >0 routing(7) Destination Type network network host host default default Flags U UG UH UGH U UG Route Type Route to a network directly from the local host Route to a network through a remote host gateway Route to a remote host directly from the local host Route to a remote host through a remote host gateway Wildcard route directly from the local host Wildcard route through a remote host gateway Subnets The network facilities support variable-length subnetting.
PAGE 4
routing(7) routing(7) If subnets are not in use, the default mask used is 255.255.255.0. If subnets are used and the 8-bit host field is partitioned into 3 bits of subnet and 5 bits of host as in the above example, then the subnet mask would be 255.255.255.192. If a host has multiple interfaces, then it can belong to different subnets. Unlike past releases, the subnets can have different sizes even if they may have the same network address.
PAGE 5
routing(7) routing(7) AUTHOR routing was developed by the University of California, Berkeley. FILES /etc/hosts /etc/networks SEE ALSO netstat(1), ifconfig(1M), route(1M), route(7P).
PAGE 6
(Notes) A (Notes) rA 6 Hewlett-Packard Company −1− HP-UX 11i Version 3: September 2010