Redhat - network question

10-23-2013

Registered User

234, 3

Join Date: Jan 2009

Last Activity: 19 May 2020, 11:46 AM EDT

Posts: 234

Thanks Given: 69

Thanked 3 Times in 3 Posts

Redhat - network question

Hi,

I am on Redhat 5. on the /etc/sysconfig/network file

I don't see GATEWAY as one line. I also checked /etc/sysconfig/network-scripts/ifcfg-eth0. I don't see GATEWAY.

But on the server. But when I do netstat -rn. I see many address. Is there some other settings ?

Code:

 
network-scripts]# netstat -rn |more
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
10.80.81.110    2.20.107.1      255.255.255.255 UGH       0 0          0 eth0
164.179.252.131 2.4.108.5       255.255.255.255 UGH       0 0          0 eth0
198.80.190.63   2.4.108.1       255.255.255.255 UGH       0 0          0 eth0
164.179.252.130 2.4.108.1       255.255.255.255 UGH       0 0          0 eth0
10.80.135.77    2.20.107.1      255.255.255.255 UGH       0 0          0 eth0
192.168.121.3   2.4.108.5       255.255.255.255 UGH       0 0          0 eth0
192.168.121.2   2.4.108.1       255.255.255.255 UGH       0 0          0 eth0
10.81.73.16     2.20.107.1      255.255.255.252 UG        0 0          0 eth0
10.81.73.8      2.20.107.1      255.255.255.252 UG        0 0          0 eth0
10.71.253.40    2.4.108.1       255.255.255.252 UG        0 0          0 eth0
10.81.73.12     2.20.107.1      255.255.255.252 UG        0 0          0 eth0

samnyc

View Public Profile for samnyc

Find all posts by samnyc

IFSYSCTL(5) Network configuration IFSYSCTL(5) NAME
ifsysctl[-<interface name>] - per network interface sysctl settings SYNOPSIS
/etc/sysconfig/network/ifsysctl /etc/sysconfig/network/ifsysctl-<interface name> DESCRIPTION
These files are intended to contain sysctl settings, that should be applied when a network interface is created. This are usually interface specific settings, like: net.ipv6.conf.eth0.use_tempaddr = 1 or net.ipv4.conf.eth0.rp_filter = 0 The settings are applied by the /etc/sysconfig/network/scripts/ifup-sysctl script executed via /etc/udev/rules.d/77-network.rules rule (see udev(7)), after the creation and after the rename of the interface name to its persistent name (when applicable), but before the ifup <interface name> -o hotplug may be executed to configure the interface. The settings are not applied by default when the NetworkManager is active (NETWORKMANAGER=yes), except when the IFSYSCTL_NETWORKMANAGER=yes variable is set in the /etc/sysconfig/network/config file. Settings from the ifsysctl- file are applied every time an interface has been created. Settings from the ifsysctl-interface name file are applied when the interface with the corresponding interface name has been created. SYNTAX
The sysctl(8) utility is required to apply the settings. It supports two separator characters for sysctl keywords: a "." in default format and a "/" in the alternate format. Therefore the syntax is basically same to the /etc/sysctl.conf file. Interface names may contain a ".". In the default sysctl format using a "." as separator, that is any "." in the interface name of the key- word, has to be replaced with a "/". In the alternate sysctl format with "/" as separator, normal interface names can be used. Optionally, the ifsysctl files may contain also the $INTERFACE and the $SYSCTL_IF variables, that are automatically replaced with the cur- rent interface name usable in the alternate format and with the sysctl-quoted interface name for the default format, before the settings are passed to the sysctl utility. Note also, that settings with variables in the ifsysctl (without the -<interface name> suffix), will be applied for every interface! Further, files with variables are not compatible to the /etc/sysctl.conf file. EXAMPLES
Settings for "eth0" and "eth0.1" interfaces # using "." as separator: net.ipv6.conf.eth0.use_tempaddr = 1 net.ipv6.conf.eth0/1.use_tempaddr = 1 # using "/" as separator: net/ipv6/conf/eth0/use_tempaddr = 1 net/ipv6/conf/eth0.0/use_tempaddr = 1 Settings with variables: # using "." as separator: net.ipv6.conf.$SYSCTL_IF.use_tempaddr = 1 # using "/" as separator: net/ipv6/conf/$INTERFACE/use_tempaddr = 1 To test your ifsysctl-eth0 or ifsysctl file, use: /etc/sysconfig/network/scripts/ifup-sysctl eth0 -o debug BUGS
Please report bugs at <https://bugzilla.novell.com/> AUTHOR
Marius Tomaschewski <mt@suse.de> SEE ALSO
ifup(8) ifcfg(5) sysctl(8) sysconfig December 2009 IFSYSCTL(5)

UNIX for Dummies Questions & Answers

Redhat - network question

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Why inactive slave bonding received network package in redhat?

Discussion started by: samran35

2. Red Hat

Redhat network registration problem

Discussion started by: sembii

3. Red Hat

Problem in RedHat Cluster Node while network Failure or in Hang mode

Discussion started by: hirenkmistry

4. Red Hat

Redhat disabling network interface - IRQ issue

Discussion started by: badoshi

5. UNIX for Dummies Questions & Answers

Question on Redhat ver.6 RPM's

Discussion started by: samnyc

6. Red Hat

Registro Redhat Network

Discussion started by: fuentepinel

7. Linux

pidstat question redhat 5

Discussion started by: jaysunn

8. IP Networking

Network question

Discussion started by: Katkota

9. IP Networking

network question

Discussion started by: scofiled83

10. UNIX for Dummies Questions & Answers

Network Issue between Linux and RedHat (both on VMWare)

Discussion started by: The_Lo_King

LEARN ABOUT SUSE

ifsysctl