Login or Register to Ask a Question and Join Our Community


Red Hat

Configure floating IP on loopback interface

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Operating Systems Linux Red Hat Configure floating IP on loopback interface
# 1  
Old 04-05-2010
Configure floating IP on loopback interface
Hi All,

I need to configure a floating IP on loopback interface of two servers (RHEL 5.4). After configuring, I'm not able to ping to that IP from a different server.
I fail to understand what is missing here. I have done similar configuration in another environment & it works fine.
Plz help.

Code:
### Command to add the virtual IP ###
/sbin/ip addr add 192.168.121.190/32 scope host dev lo
----------------------------------------------
### ip addr o/p after addition ###
# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet 192.168.121.190/32 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:21:5e:dd:02:60 brd ff:ff:ff:ff:ff:ff
    inet 192.168.121.176/24 brd 192.168.121.255 scope global eth0
    inet6 fe80::221:5eff:fedd:260/64 scope link
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 1000
    link/ether 00:21:5e:dd:02:62 brd ff:ff:ff:ff:ff:ff
4: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 02:21:5e:df:82:63 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::21:5eff:fedf:8263/64 scope link
       valid_lft forever preferred_lft forever
5: sit0: <NOARP> mtu 1480 qdisc noop
    link/sit 0.0.0.0 brd 0.0.0.0
----------------------------------------------

### ifconfig -a o/p ###

eth0      Link encap:Ethernet  HWaddr 00:21:5E:DD:02:60
          inet addr:192.168.121.176  Bcast:192.168.121.255  Mask:255.255.255.0
          inet6 addr: fe80::221:5eff:fedd:260/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:11213 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3609 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:880542 (859.9 KiB)  TX bytes:382504 (373.5 KiB)
          Interrupt:169 Memory:92000000-92012800

eth1      Link encap:Ethernet  HWaddr 00:21:5E:DD:02:62
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:106 Memory:94000000-94012800

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2701 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2701 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:4144416 (3.9 MiB)  TX bytes:4144416 (3.9 MiB)

Last edited by pludi; 04-05-2010 at 03:24 PM.. Reason: code tags, please...
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. AIX

Is it possible to configure bonding over bonded interface in AIX?

Hi Everyone, Is it possible to configure bonding over bonded interface in AIX? For example: server has for NIC port: ent0 ent1 ent2 ent3 First I create a EtherChannel ent4 from ent0 and ent1. and then I create a EtherChannel ent5 from ent2 and ent3. Can I create a EtherChannel... (1 Reply)
Discussion started by: nnnnnnine
1 Replies

2. Linux

Loopback interface doen't appear

Hi all, i have a problem with (Network in Linux) .. my issue with a HW appliance has openfiler 2.3 and is used for File Sharing using samba .. the problem is when i try to list all configured network interfaces using ifconfig -a .. i can't see the loopback interface, Although the file... (3 Replies)
Discussion started by: mabdelmageid
3 Replies

3. Solaris

Configure network interface for Solaris 10

Hi, I have installed Solaris 10 on VMware7, When i used ifconfig -a to check network interface, it has shown lo0 as loopback interface. Please advise how to configure network interfaces using VMware. (1 Reply)
Discussion started by: ajhal04
1 Replies

4. Solaris

configure zones to have different network interface and network

i need to configure a zone to use different interface (bge2) than global and have connected to completely different network switch & to use its own defaultrouter and hosts file .. is it possible ..if so ..how ? Thanks (9 Replies)
Discussion started by: skamal4u
9 Replies

5. SCO

Change SCO - GUI or Desktop interface to DOS based interface

Hi all I have installed a demo version of SCO OpenServer 5.0.2, I finally found it is Desktop Interface, I would like to know how to change its interface to dos based interface? If you have any ideas, please tell me then. Thank you (2 Replies)
Discussion started by: TinhNhi
2 Replies

6. Solaris

Command line Interface or GUI Interface not shown on solaris

Dear all, I am a newbie in solaris and I need your advice. I have a Solaris version 5.9 installed on Sunfire V240. I am able to ssh the machine from putty remotely. My problem is that I cannot see the display from KVM switch I have connected to it. I need also to be able to see the GUI... (2 Replies)
Discussion started by: mbouster
2 Replies

7. Red Hat

How to configure network interface card in OEL.

Hi I have installed OEL 4 on my dell XPS laptop. But when i connect the LAN cable and try to acesss internet. it does not work. the led's in the port do not blink when i plug in the cable .do i need some drivers please suggest. Thanks Ankur (2 Replies)
Discussion started by: ankurk
2 Replies

8. Solaris

Adding Loopback Interface

Hello, I have a SunOS (5.5.1) system that I need to migrate to a new IP address. I would like to have any requests destined for the old IP to be forwarded to this server. One suggestion I had was to add a route on my router that would point the old IP to the new IP. How do I add another... (2 Replies)
Discussion started by: reiklen
2 Replies

9. UNIX for Advanced & Expert Users

Loopback Interface...Vanished???

Recently I noticed that my internet connection would not work correctly-although connected domain names could not be resolved. My resolv.conf file was fine since it is configured every time I dial up. a closer inspection showed that my loopback interface had disappearerd! Any ideas why would this... (1 Reply)
Discussion started by: silvaman
1 Replies
Login or Register to Ask a Question