-----Original Message----- >>> From: redhat-list-bounces@xxxxxxxxxx on behalf of Mike Burger >>> Sent: Tue 2/15/2005 1:42 PM >>> To: General Red Hat Linux discussion list >>> Subject: RE: Multiple IPs on single interface >>> >>> FWIW, it might be a better alternative, instead of the ethX:Y setups, via >>> virtual interfaces, to simply alias the IPs using the "ip addr add" >>> commands. You simply add lines like the following into your >>> /etc/init.d/rc.local file: >>> >>> ip addr add xxx.xxx.xxx.xx1 dev eth0 >>> ip addr add xxx.xxx.xxx.xx2 dev eth0 >>> >>> There are a number of fairly good reasons to go with this type of setup, >>> rather than virtual ethX:Y interfaces: >>> >>> 1) You don't have to keep track of what interfaces are set up. >>> 2) You don't have to maintain multiple configuration files for all of >>> those virtual interfaces. >>> 3) I've found, in the past, that iptables doesn't like working with the >>> virtual interfaces all that much. Working with standard interface >>> devices, like eth0, eth1, and then just the IPs, has seemed to work >>> much better for me. >>> >> On Tue, 15 Feb 2005, Smith, Albert wrote: >> >> 256 is the maxium amount of ip address that can be bound to a single nic >> >> Albert Smith >> Sr. Unix Systems Administrator >> Genex Services >> 440 E. Swedesford Rd. >> Wayne, PA 19087 >> albert.smith@xxxxxxxxxxxxxxxxx >> (610) 964-5154 > > > > -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx on behalf of Jason Williard > Sent: Tue 2/15/2005 1:17 AM > To: 'General Red Hat Linux discussion list' > Subject: RE: Multiple IPs on single interface > > That worked. Thank you very much. Do you know if there is a max limit on > how many IP's can be attached to a single interface? Also, is there a way > to add an entire subnet without creating 1 file for each IP? > > --- > Thank You, > Jason Williard > PCSafe, Inc. > > > > -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] > On Behalf Of IAK Tanoli > Sent: Monday, February 14, 2005 10:08 PM > To: General Red Hat Linux discussion list > Subject: Re: Multiple IPs on single interface > > > Modify the file as following. > > DEVICE=eth0:1 > ONBOOT=yes > BOOTPROTO=static > IPADDR=xxx.xxx.xxx.xxx > NETMASK=255.255.254.0 > GATEWAY=xxx.xxx.xxx.xxx > HWADDR=00:00:00:00:00:00 > > --- Jason Williard <jason@xxxxxxxxxx> wrote: > > > Hello, > > > > I have a box with Red Hat Enterprise Linux ES > > release 3 installed on it. > > Today, I acquired 2 additional IP addresses for it. > > I can add the IP > > addresses using the following commands, but they are > > not permanent. > > > > # ifconfig eth0 add xxx.xxx.xxx.xxx netmask > > 255.255.254.0 > > # ifconfig eth0:0 add xxx.xxx.xxx.xxx netmask > > 255.255.254.0 > > > > As this was not making it permanent, I created 2 > > files (ifcfg-eth0:0 & > > ifcfg-eth0:0:1) inside the > > /etc/sysconfig/network-scripts/ directory. The > > first file works and interface eth0:0 comes up at > > startup. However, the > > second interface stays down. Below is the content > > of the two files: > > > > ifcfg-eth0:0 > > --- > > DEVICE=eth0:0 > > ONBOOT=yes > > BOOTPROTO=static > > IPADDR=xxx.xxx.xxx.xxx > > NETMASK=255.255.254.0 > > GATEWAY=xxx.xxx.xxx.xxx > > HWADDR=00:00:00:00:00:00 > > --- > > > > ifcfg-eth0:0:1 > > --- > > DEVICE=eth0:0:1 > > ONBOOT=yes > > BOOTPROTO=static > > IPADDR=xxx.xxx.xxx.xxx > > NETMASK=255.255.254.0 > > GATEWAY=xxx.xxx.xxx.xxx > > HWADDR=00:00:00:00:00:00 > > --- > > > > > > --- > > Thank You, > > Jason Williard > > PCSafe, Inc. > > > > > > > > > > > > > > -- > > redhat-list mailing list > > unsubscribe > > > mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > > ===== > -- > > ________________ > Imtiaz Ahmed Khan > Sr. System Consultant > ANTS Consultiing > > > Org: ANTS Consulting > URL: http://ants.com.pk/ > Eml: sendtoimtiaz@xxxxxxxxx > Mob: +92300-2128278 > ___________________________________ > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail - 250MB free storage. Do more. Manage less. > http://info.mail.yahoo.com/mail_250 > > -- Mike Burger http://www.bubbanfriends.org Visit the Dog Pound II BBS telnet://dogpound2.citadel.org or http://dogpound2.citadel.org To be notified of updates to the web site, visit http://www.bubbanfriends.org/mailman/listinfo/site-update, or send a message to: site-update-request@xxxxxxxxxxxxxxxxx with a message of: subscribe -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list You could also use the redhat-config-network and do the following: New -> Ethernet connection -> Set the ip info -> click Apply On the new connection it is listed as inactive -> Edit -> Hardware Under alias it should show that the alias as 1 or the next in your list and on the general it should show the interface name:alias Click Save Click Activate This does not work with DHCP if you already have a DHCP assigned address. Quick + Easy + Painless Albert Smith Sr. Unix Systems Administrator Genex Services 440 E. Swedesford Rd. Wayne, PA 19087 albert.smith@xxxxxxxxxxxxxxxxx (610) 964-5154
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