I know this was discussed before, and I have seen a million ways of doing this via online docs. I have a quick question that hopefully the community can help me out with
I am trying to add a block of 10 IP addresses. Rather then create 10 different alias files, I want to use the RANGE file.
Docs say to use the following format: IPADDR_START=x.x.x.x IPADDR_END=x.x.x.x CLONENUM_START=0
If the IP's that are given to you are on a completely seperate gateway / netmask, how would you enter it into this file? Is it necessary? Please advise.
Am 14.11.2011 00:28, schrieb Jonathan Vomacka:
I know this was discussed before, and I have seen a million ways of doing this via online docs. I have a quick question that hopefully the community can help me out with
I am trying to add a block of 10 IP addresses. Rather then create 10 different alias files, I want to use the RANGE file.
Docs say to use the following format: IPADDR_START=x.x.x.x IPADDR_END=x.x.x.x CLONENUM_START=0
If the IP's that are given to you are on a completely seperate gateway / netmask, how would you enter it into this file? Is it necessary? Please advise.
who needs ranges? configure what you need!
cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 IPADDR=10.0.0.6 GATEWAY=10.0.0.1 NETMASK=255.255.255.0 ONBOOT=yes BOOTPROTO=static TYPE=Ethernet MODE=Managed IPV6INIT=no NM_CONTROLLED=no USERCTL=no MTU=1500
cat /etc/sysconfig/network-scripts/ifcfg-eth0:1 DEVICE=eth0:1 IPADDR=10.0.0.7 ONPARENT=yes
cat /etc/sysconfig/network-scripts/ifcfg-eth0:2 DEVICE=eth0:2 IPADDR=10.0.0.5 ONPARENT=yes
Reindl,
A block of 10 IPV4 is not a lot, and they will all eventually be used. My question is, my server IP is 66.80.x.x and my additional IPS are in the 50.7.x.x range using a netmask of 255.255.255.248.
Can the netmask be written in the range file like it is in the ifcfg-eth0:0?
On 11/13/2011 6:35 PM, Reindl Harald wrote:
Am 14.11.2011 00:28, schrieb Jonathan Vomacka:
I know this was discussed before, and I have seen a million ways of doing this via online docs. I have a quick question that hopefully the community can help me out with
I am trying to add a block of 10 IP addresses. Rather then create 10 different alias files, I want to use the RANGE file.
Docs say to use the following format: IPADDR_START=x.x.x.x IPADDR_END=x.x.x.x CLONENUM_START=0
If the IP's that are given to you are on a completely seperate gateway / netmask, how would you enter it into this file? Is it necessary? Please advise.
who needs ranges? configure what you need!
cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 IPADDR=10.0.0.6 GATEWAY=10.0.0.1 NETMASK=255.255.255.0 ONBOOT=yes BOOTPROTO=static TYPE=Ethernet MODE=Managed IPV6INIT=no NM_CONTROLLED=no USERCTL=no MTU=1500
cat /etc/sysconfig/network-scripts/ifcfg-eth0:1 DEVICE=eth0:1 IPADDR=10.0.0.7 ONPARENT=yes
cat /etc/sysconfig/network-scripts/ifcfg-eth0:2 DEVICE=eth0:2 IPADDR=10.0.0.5 ONPARENT=yes
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Vreme: 11/14/2011 12:42 AM, Jonathan Vomacka piše:
A block of 10 IPV4 is not a lot, and they will all eventually be used. My question is, my server IP is 66.80.x.x and my additional IPS are in the 50.7.x.x range using a netmask of 255.255.255.248.
Can the netmask be written in the range file like it is in the ifcfg-eth0:0?
255.255.255.248 gives you 6 (six), not 10 IP's.
I can not say about range file, but you can use IP calculator to find out which IP start and end you need to write. Enter data in this site and use "29" as an netmask. It use HostMin and HostMax numbers for IPADDR_START and IPADDR_END:
On 11/13/11 4:15 PM, Ljubomir Ljubojevic wrote:
255.255.255.248 gives you 6 (six), not 10 IP's.
and one of those 6 is typically reserved for the gateway IP, leaving 5 usable hosts.
Vreme: 11/14/2011 01:28 AM, John R Pierce piše:
On 11/13/11 4:15 PM, Ljubomir Ljubojevic wrote:
255.255.255.248 gives you 6 (six), not 10 IP's.
and one of those 6 is typically reserved for the gateway IP, leaving 5 usable hosts.
Does not have to be. System they are on can be designated gateway.
- Router A = ISP's router and default gateway to system B. - System B (our server) has /30 subnet used to link router A (one IP) and system B (other IP = xxx). - On Router A route/direct /29 subnet (our 6 IP's) to point to System B's main IP (other IP = xxx). - Place all 6 IP's from subnet /29 as aliases to system B and DNAT/SNAT internal IP's to them.
All router A will now is that traffic is coming from that /29 subnet (those 6 IP's), and it will not care how they reached them. The response traffic will be directed/routed via System B's main IP and system B will accept them as it's own IP's and do what ever it is supposed to do.
Jonathan Vomacka writes:
Reindl,
A block of 10 IPV4 is not a lot, and they will all eventually be used. My question is, my server IP is 66.80.x.x and my additional IPS are in the 50.7.x.x range using a netmask of 255.255.255.248.
Can the netmask be written in the range file like it is in the ifcfg-eth0:0?
Reindl,
Please do not top post.
255.255.255.248 gives you a total of 8 IPs, not 10, of which usually you loose 3 for the network, broadcast and gw addresses. You can assign those 5 in a range file without problems, you can also specify the netmask like in a "normal" cfg file. It shouldn't be needed to specify other settings.
Where I work we'd route the additional subnet through the IP you already have on the server, thus allowing you to allocate _all_ 8 IPs as a range on the loopback interface with a /32 netmask. See if your ISP can do this for you.
-- Nux! www.nux.ro
Am 14.11.2011 12:03, schrieb nux@li.nux.ro:
Jonathan Vomacka writes:
Reindl,
A block of 10 IPV4 is not a lot, and they will all eventually be used. My question is, my server IP is 66.80.x.x and my additional IPS are in the 50.7.x.x range using a netmask of 255.255.255.248.
Can the netmask be written in the range file like it is in the ifcfg-eth0:0?
Reindl,
Please do not top post
maybe you should open your eyes or learn to use you reply button which knows better who wrote what and do not quote my name to anything i have not written
my only reply to this thread was at 0:35 and there was no top-post
On 11/13/11 3:28 PM, Jonathan Vomacka wrote:
If the IP's that are given to you are on a completely seperate gateway / netmask, how would you enter it into this file? Is it necessary? Please advise.
on a completely separate gateway/mask from what?
-
John R Pierce -
Jonathan Vomacka -
Ljubomir Ljubojevic -
nux＠li.nux.ro -
Reindl Harald