| Author |
Message |
Peter Steele
Guest
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 Posted:
Fri Dec 24, 2004 4:54 am Post subject:
Can a virtual IP be assigned without needing a physical IP? |
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We have a cluster set up where the nodes have two NICs, one used strictly
for cluster management and the other used for external access to the
cluster's resources by our users. The cluster nodes are assigned static IPs
on the management LAN and the user LAN is set to use DHCP with the IP
addresses configured to be on same subnet as the main corporate LAN. The
users do not use these DHCP assigned addresses however. In addition to these
addresses on the corporate LAN NICs we have configured virtual IPs for each
cluster node. This means that every node has two IP addresses taken from the
corporate LAN subnet, the one assigned by DHCP and the virtual IP assigned
through the cluster. We would like to eliminate the DHCP addresses so we are
not wasting addresses that is never used. I cannot find a way to do this
though. When I try to do a
ipconfig /release CORPLAN
on a node it effectively disables the interface and the virtual IP
disappears along with the DHCP address. I've tried other approaches but
cannot find a way to accomplish this. Is there a way to do this? |
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Gerald Aigenbauer
Guest
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| Posted:
Sat Dec 25, 2004 10:45 pm Post subject:
Re: Can a virtual IP be assigned without needing a physical |
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hi peter!
simply: no.
you need a node specific ip-address on each cluster node and a virtual
address for each cluster group. and you should not use dhcp on interfaces,
where you take virtual ipīs on it too!
gerald aigenbauer.
"Peter Steele" <psteele@z-force.com> schrieb im Newsbeitrag
news:etPq8IU6EHA.3756@TK2MSFTNGP14.phx.gbl...
| Quote: | We have a cluster set up where the nodes have two NICs, one used strictly
for cluster management and the other used for external access to the
cluster's resources by our users. The cluster nodes are assigned static
IPs on the management LAN and the user LAN is set to use DHCP with the IP
addresses configured to be on same subnet as the main corporate LAN. The
users do not use these DHCP assigned addresses however. In addition to
these addresses on the corporate LAN NICs we have configured virtual IPs
for each cluster node. This means that every node has two IP addresses
taken from the corporate LAN subnet, the one assigned by DHCP and the
virtual IP assigned through the cluster. We would like to eliminate the
DHCP addresses so we are not wasting addresses that is never used. I
cannot find a way to do this though. When I try to do a
ipconfig /release CORPLAN
on a node it effectively disables the interface and the virtual IP
disappears along with the DHCP address. I've tried other approaches but
cannot find a way to accomplish this. Is there a way to do this?
|
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Peter Steele
Guest
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| Posted:
Mon Dec 27, 2004 10:45 pm Post subject:
Re: Can a virtual IP be assigned without needing a physical |
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We do have node-specific IP addresses for each node on the dedicated cluster
LAN. This is essentially a private LAN that will only be used for cluster
management purposes, as well as the cluster heartbeat. If we have a second
NIC in each node and want to assign virtual IPs to these NICs, do we need
physical IPs for each node as well? Users will only ever access the nodes
via the virutal IPs and as a result we are wasting IPs in this subnet if we
also have to assign physical IPs.
"Gerald Aigenbauer" <ga@ntc.at> wrote in message
news:OpX0hEq6EHA.3700@tk2msftngp13.phx.gbl...
| Quote: | hi peter!
simply: no.
you need a node specific ip-address on each cluster node and a virtual
address for each cluster group. and you should not use dhcp on interfaces,
where you take virtual ipīs on it too!
gerald aigenbauer.
"Peter Steele" <psteele@z-force.com> schrieb im Newsbeitrag
news:etPq8IU6EHA.3756@TK2MSFTNGP14.phx.gbl...
We have a cluster set up where the nodes have two NICs, one used strictly
for cluster management and the other used for external access to the
cluster's resources by our users. The cluster nodes are assigned static
IPs on the management LAN and the user LAN is set to use DHCP with the IP
addresses configured to be on same subnet as the main corporate LAN. The
users do not use these DHCP assigned addresses however. In addition to
these addresses on the corporate LAN NICs we have configured virtual IPs
for each cluster node. This means that every node has two IP addresses
taken from the corporate LAN subnet, the one assigned by DHCP and the
virtual IP assigned through the cluster. We would like to eliminate the
DHCP addresses so we are not wasting addresses that is never used. I
cannot find a way to do this though. When I try to do a
ipconfig /release CORPLAN
on a node it effectively disables the interface and the virtual IP
disappears along with the DHCP address. I've tried other approaches but
cannot find a way to accomplish this. Is there a way to do this?
|
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Loay Shbeilat [MS]
Guest
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| Posted:
Tue Dec 28, 2004 1:19 am Post subject:
Re: Can a virtual IP be assigned without needing a physical |
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Totally understand your point :-)
But unfortunately, you still need those dedicated IP's on the second NIC as
well.
--
Thanks,
Loay Shbeilat
MSCS Admin Tools STE
"This posting is provided "AS IS" with no warranties, and confers no
rights."
"Peter Steele" <psteele@z-force.com> wrote in message
news:%23HVtoND7EHA.1288@TK2MSFTNGP10.phx.gbl...
| Quote: | We do have node-specific IP addresses for each node on the dedicated
cluster LAN. This is essentially a private LAN that will only be used for
cluster management purposes, as well as the cluster heartbeat. If we have
a second NIC in each node and want to assign virtual IPs to these NICs, do
we need physical IPs for each node as well? Users will only ever access
the nodes via the virutal IPs and as a result we are wasting IPs in this
subnet if we also have to assign physical IPs.
"Gerald Aigenbauer" <ga@ntc.at> wrote in message
news:OpX0hEq6EHA.3700@tk2msftngp13.phx.gbl...
hi peter!
simply: no.
you need a node specific ip-address on each cluster node and a virtual
address for each cluster group. and you should not use dhcp on
interfaces, where you take virtual ipīs on it too!
gerald aigenbauer.
"Peter Steele" <psteele@z-force.com> schrieb im Newsbeitrag
news:etPq8IU6EHA.3756@TK2MSFTNGP14.phx.gbl...
We have a cluster set up where the nodes have two NICs, one used
strictly for cluster management and the other used for external access
to the cluster's resources by our users. The cluster nodes are assigned
static IPs on the management LAN and the user LAN is set to use DHCP
with the IP addresses configured to be on same subnet as the main
corporate LAN. The users do not use these DHCP assigned addresses
however. In addition to these addresses on the corporate LAN NICs we
have configured virtual IPs for each cluster node. This means that every
node has two IP addresses taken from the corporate LAN subnet, the one
assigned by DHCP and the virtual IP assigned through the cluster. We
would like to eliminate the DHCP addresses so we are not wasting
addresses that is never used. I cannot find a way to do this though.
When I try to do a
ipconfig /release CORPLAN
on a node it effectively disables the interface and the virtual IP
disappears along with the DHCP address. I've tried other approaches but
cannot find a way to accomplish this. Is there a way to do this?
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