Setting up a dedicate LAN for a Package

[Christian Schulze]

I have a (probably stupid) question.

I have a 2-Node Cluster, where each Node has 5 LAN-Ports.
1 onboard NIC (lan0)
and two dual-NICs (lan1 and lan2 on first, lan 3 and lan4 on second)
lan0 is used only for heartbeat
lan1 is primary lan
lan3 is standby for that

I would like to use lan 4 (and lan2 as standby for that) for Dataprotector-Package, which is backing up several other Hosts and Clusters. My Intention is to remove this Network-load from the other Packages.

Right now the Cluster is not in a production state, so I can play with it a little bit ...

I searche through lots of Documents, but did never find some hints for this. All i found is configuring dedicated LANs on Windows-boxes and HPs Port Aggregation Package.

I think there must be a simple way too.
Any help or ideas is appreciated
Christian

[Muthukumar_5]

You have to setup proper routing setting for data trasacation using specific lan.

machine1 -- machine2

If you are configuring machine1 and machine 2 must have a setting to use data transaction through specific lan only.

# netstat -ian

will give network interface based packet trasaction for monitoring.

--
Muthu

[Christian Schulze]

OK, but how do I tell the Serviceguard-Package to use a specific interface ?

is there a specific order for the parameters
NETWORK_INTERFACE, HEARTBEAT_IP ...
in cluster configuration File or package config File ?

Christian

[melvyn burnard]

You make sure that the lan 4 has an Ip address in a different subnet to lans 0 and 1, and make sure the connectivity is tehre between the lans on bioth nodes.
Then make sure the lans are included in your cluster configuration file, and use it as a HEARTBEAT lan as well.
Then when cretaing your package, you put the relevant IP address for your package "host name" and the SUBNET for the lan into your config and control files where required.
Then when you apply thios package configuration, it will put the floating IP address onto the subnet that is now on lan 4

[Bernhard Mueller]

Christian,

in fact this is more a DataProtector question. Suppose you have a separate SUBNET on lan4 with IP #### which your DNS resolves as "mediaserver". then you add a client "mediaserver" to your DP cell and add/move the devices which you probably defined for the cell-server package for this mediaserver client.

All clients with access to that "backup subnet" should backup to a device on this mediaserver: then the backup data go through lan4 (to mediaserver IP). The cell-server package with an IP in the lan1 subnet will only receive the metadata about the backup objects through lan1.

Hope this clarified the issue.

Regards
Bernhard

[Luk Vandenbussche]

Hi,

Ip propose you use STATIONARY_IP for lan4, so there is no heartbeat traffic on this Lan card.

NETWORK_INTERFACE lan4
STATIONARY_IP a.b.c.d
NETWORK_INTERFACE lan2 (defines standby)

You configure an IP adress on this package.
You tell your DP clients to use the IP adress a.b.c.d

[Stephen Doud]

Luk,
What harm is there in configuring all IP-bearing NICs to serve as redundant paths for Heartbeat on top of their normal data duties?
The cluster configuration file defines HEARTBEAT_INTERVAL as 1 second by default - an eternity in computer cycles, and a packet is tiny so why not permit every NIC to pass HB packets?

Even a dedicated NIC can stand to carry a HB packet from time to time.

[Luk Vandenbussche · Accepted solution]

Stefan,

I agree, but i just would tell that you can preserve a lan segment for Lan traffic only and not for HB issues

[Christian Schulze]

Thanks Folks