IP aliasing in Solaris
08 June 2002, 12:16 PM
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Basically a machine with 2 x NICs with different IP addresses, that are configured as one "virtual" IP address, so that if one fails, there is still a path to the other. Applications/users connect to the machine via the virtual IP address, or alias, and the 2 NICs behind it are invisible.
Similar idea to a virtual disk (e.g. mirror)
Edited to say I have seen this used for the heartbeat connection in cluster configurations, so that even the hearbeat network is highly available.
Dave
[Edited by druddle - 8/6/2002 12:17:07 PM]
Similar idea to a virtual disk (e.g. mirror)
Edited to say I have seen this used for the heartbeat connection in cluster configurations, so that even the hearbeat network is highly available.
Dave
[Edited by druddle - 8/6/2002 12:17:07 PM]
08 June 2002, 03:55 PM
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Yes you can do it on solaris 8 what you need to do is have a valid hostname and IP Address in /etc/hosts and then:
ifconfig hme0:1 etc and set the parameters
then create in /etc/hostname.hme0:1 and add the second hostname etc
then you will have a virtual host on the system.
not sure how many times you can do it though
or just get multiple nic cards.
regards
Steve
[Edited by Wurzel - 8/6/2002 3:56:38 PM]
ifconfig hme0:1 etc and set the parameters
then create in /etc/hostname.hme0:1 and add the second hostname etc
then you will have a virtual host on the system.
not sure how many times you can do it though
or just get multiple nic cards.
regards
Steve
[Edited by Wurzel - 8/6/2002 3:56:38 PM]
06 August 2002, 11:23 AM
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Is there such a thing as IP Aliasing as part of Sol8 or 9 ? I dont think that there is, as any IP aliasing functionality i have ever seen has been part of clustering software (Primecluster, Sun Cluster, VCS, Observe) but i was wondering if it has been added to Solaris so it can run at a lower level.
Dave
Dave
06 August 2002, 01:46 PM
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Whoops wrong thing. You want Sun traffic manager or whatever its called today. (ipmp).
Description
IP Network Multipathing provides interface failover and load spreading when you have multiple interface cards connected to the same IP link (e. g. Ethernet). IP Multipathing is bundled with Solaris 8.
Description
IP Network Multipathing provides interface failover and load spreading when you have multiple interface cards connected to the same IP link (e. g. Ethernet). IP Multipathing is bundled with Solaris 8.
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06 August 2002, 02:23 PM
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06 August 2002, 06:54 PM
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Depending on what you are doing you need to get Mutipathing working (IMHO a crock of cack) or better use Sun Trunking software... in fact just received a copy today... however its a cost item of $999 !!! per server
Plus you will need a decent switch to connect to.... Were using Cisco 6509's so no issues here !
Ids
Plus you will need a decent switch to connect to.... Were using Cisco 6509's so no issues here !
Ids
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add, alias, aliases, aliasing, etchostname, find, ifconfig, interface, ip, ipmp, primecluster, publicfailover, same, show, solaris
