Bash script for ping in your own subnet

10 More Discussions You Might Find Interesting

1. IP Networking

Loop in /24 Subnet, No ping beyond .1 and .2

Running 3650 switch. I have this odd issue where I cannot get 4 new Centos 7 boxes pinging out on public IPs (nor pinging in), only gateway .1 and first public IP .2 This is what I see, which doesn't look normal. How do I fix this? The server itself is configured fine (Centos 7) # cat...

2. Shell Programming and Scripting

How to write bash script to subdivide a given subnet into a pre-defined number of smaller subnets?

Bash script to subdivide a given subnet into a pre-defined number of smaller subnets. Show network/broadcast address, number of hosts and assign gateway. For example: Input: ./subnetter.sh 192.168.0.0/24 3 Output: 192.168.0.0/128 subnet 192.168.0.0 broadcast 192.168.0.127 gateway...

3. Shell Programming and Scripting

How to write bash script to subdivide a given subnet into a pre-defined number of smaller subnets?

4. Solaris

Guest LDOMS on same subnet cant ping eachother

Hi all, New to this forum. I have just been reading through a historical thread about some issues with IPMP. Some tips from "Peasant" where very useful. Please see below "Just couple of more hints regarding VM. For VDS, use one VDS - one guest LDOM, don't put everything in primary-vds....

5. Shell Programming and Scripting

Need bash script to ping the servers and rename the output file each time the script is ran

HI, I have a file serverlist in that all host names are placed. i have written a small script #./testping #! /bin/bash for i in `cat serverlist` do ping $i >> output.txt done so now it creates a file output.txt till here fine.. now each time i run this script the output file...

6. Linux

Ping check failed from Nagios master server on windows hosts in the same subnet

Hello All, We have added a windows host and its config files to Nagios master server and wanted to do a ping check alone at the moment however, the nagios master server identifies the host in its GUI and immediately disappears can anyone let me know the right approach to this one, We want to...

7. UNIX for Dummies Questions & Answers

Ping bash script to file

Hello: I have this script: #!/bin/bash #for loop for ip in `cat ips` do ping $ip | grep "is alive">>pingtestlog done And its working properly with this input: ericadm@amxcruas1> cat ips 10.196.60.4 10.196.61.210 10.196.62.73 10.196.61.152

8. IP Networking

Migrating existing Subnet to a new subnet and changing ip addresses in UNIX

Hi, My project needs to migrate the existing Subnet (255.255.255.0) to a new subnet and change the ipaddresses (currently C class). How can I do that. I need some information. John

9. UNIX for Dummies Questions & Answers

Unix TCP/IP ping to other subnet

I have Digital UNIX V4.0B (Rev. 564) on alpha machine. I'm trying to acces network in subnet (192.168.1.x). Ip on Alpha comp. is from 192.168.3.X subnet. My default gateway on this network is 192.168.3.1 and it working OK from other machines. This machine is visible from same subnet...

10. Shell Programming and Scripting

Ping script using Redhat and BAsh

Alright, I have being checking out various posting here trying to hack together something for a friend Needed: A script that can run in cron doing: ping of several hosts and notifying via email when they are unavailable. I am not going to post my non working messes (I am a basic...

LEARN ABOUT SUSE

ifndp-proxy

IFNDP-PROXY(5)						       Network configuration						    IFNDP-PROXY(5)

NAME

       ifndp-proxy[-<interface name>] - IPv6 NDP and IPv4 ARP proxy entries

SYNOPSIS

       /etc/sysconfig/network/ifndp-proxy
       /etc/sysconfig/network/ifndp-proxy-<interface name>

DESCRIPTION

       These  files  contain  IPv6  NDP and IPv4 ARP proxy settings, that should be applied using the ip neigh add proxy command documented in the
       ip(8) manual page that provides a common interface for IPv4 and IPv6.

       The NDP/ARP proxy is required, e.g. when IP addresses from the same subnet have to be used on the interface of  the  host  as  well  as	on
       interfaces behind a (tunnel) interface and using a bridge is not an option.

       Don't forget to enable forwarding and the NDP/ARP proxy by setting
	    net.ipv6.conf.<all|default|interface name>.proxy_ndp = 1
	    net.ipv6.conf.<all|default|interface name>.forwarding = 1
       and/or
	    net.ipv4.conf.<all|default|interface name>.proxy_arp = 1
	    net.ipv4.conf.<all|default|interface name>.forwarding = 1
       or
	    net.ipv4.ip_forward = 1
       either as global all setting in the /etc/sysctl.conf file or using the ifsysctl(5) files, that allow per-interface setup.
       Forwarding can be also enabled in the /etc/sysconfig/sysctl file using the IP_FORWARD and IPV6_FORWARD variables.

       The proxy entries are added and deleted using the      if-{up|down}.d/ndp-proxy script, every time after an involved interface has been set
       up or down.

SYNTAX

       The format of the ifndp-proxy file is:
       <address> <address interface>	 <proxy interface list>

       The format of the ifndp-proxy-<address interface> file is same to above, but allows also to omit the address interface by using	a  "-"	as
       placeholder inside of the file, because it is already available in the file name:
       <address> <address interface | -> <proxy interface list>

       Lines beginning with # and blank lines are ignored.

       Each  line  defines  to	add a proxy NDP/ARP entry with the address of or behind address interface to all interfaces in the proxy interface
       list.

EXAMPLES

       Let's assume, your machine is connected via eth0 to a switch with the networks 2001:db8:abba::/64 and 192.168.100.1/24 and is using the	IP
       address 1 itself. You'd like to use the addresses 11 and 12 e.g. for virtual machines behind the tap1 and tap2 interface, that is:
	    2001:db8:abba::1/64       -- local eth0 address
	    2001:db8:abba::11/64      -- address behind tap1
	    2001:db8:abba::12/64      -- address behind tap2
	    192.168.100.1/24	      -- local eth0 address
	    192.168.100.11/24	      -- address behind tap1
	    192.168.100.12/24	      -- address behind tap2
       then set up the following entries in the ifndp-proxy file:
	    2001:db8:abba::1	      eth0     tap1 tap2
	    2001:db8:abba::11	      tap1     eth0 tap2
	    2001:db8:abba::12	      tap2     eth0 tap1
	    192.168.100.1	      eth0    tap1 tap2
	    192.168.100.11	      tap1    eth0 tap2
	    192.168.100.12	      tap2    eth0 tap1
       additionally to the routing entries in the routes or ifroute-<interface name> files.

BUGS

       Please report bugs at <https://bugzilla.novell.com/>

AUTHOR

       Marius Tomaschewski <mt@suse.de>

SEE ALSO

       ifup(8) ifcfg(5) ifsysctl(8)

sysconfig							   December 2009						    IFNDP-PROXY(5)

Shell Programming and Scripting