How to setup a redundant ip connection?

aadipop

Member
Jan 26, 2016
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Root Administrator
Hello,

I have 2 ip's from 2 providers and I wanna get a redundant connection if the main provider will fall.

The second (backup) connection, ip2, is from one provider who support only pppoe login, so I've installed the 'rp-pppoe' yum package and I successfully connect to the network.

Now I have em1, which is the main connection, and the ip1 is set in Home > Server Config > Basic WHM Setup.
And em2, which is the backup connection.

How can I manage or where can I specify the backup connection ip2 in WHM?

Thanks,
Adrian
 

aadipop

Member
Jan 26, 2016
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Cluj-Napoca
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Root Administrator
It's the 3'rd time when my ISP was down for ~3-4 hours and I need a backup internet connection in case this situation will be back.

Please don't tell me that the internet connection can't be backed up and ISP is a single point of failure :)

I think having a redundant internet connection is some basic principle on how a datacenter works :)
 

aadipop

Member
Jan 26, 2016
13
2
53
Cluj-Napoca
cPanel Access Level
Root Administrator
ok, thanks ... is somewhere any guide on how to do this? or example? or how others manage this situations?
* how to properly setup ip routing on dc for cPanel if the main internet connection ( the ip with the cPanel license ) is down?
 

cPanelLauren

Product Owner II
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Nov 14, 2017
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I don't have one as this is something that is dependent on the datacenter/provider. This is something you'd need to contact them for, cPanel has absolutely no control over these items. You can add a new IP address to cPanel but that is dependent on the IP address being routed properly which happens separately.
 

aleena12345

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In the secure (router) mode, the client-side and server-side VLANs provide the fault-tolerant (redundant) connection paths between the CSM-S and the routers on the client side and the servers on the server side. In a redundant configuration, two CSM-S modules perform active and standby roles. Each CSM-S contains the same IP, virtual server, server pool, and real server information. From the client-side and server-side networks, each CSM-S is configured identically. The network sees the fault-tolerant configuration as a single CSM-S.


Configuring fault tolerance requires the following:

Two CSM-S modules that are installed in the Catalyst 6500 series chassis.

Identically configured CSM-S modules. One CSM-S is configured as the active; the other is configured as the standby.

Each CSM-S modules connected to the same client-side and server-side VLANs.

Communication between the CSM-S modules provided by a shared private VLAN.

A network that sees the redundant CSM-S modules as a single entity.

Connection redundancy by configuring a link that has a 1-GB per-second capacity. Enable the calendar in the switch Cisco IOS software so that the CSM-S state change gets stamped with the correct time.

The following command enables the calendar:

Cat6k-2# configure terminal
Cat6k-2(config)# clock timezone WORD offset from UTC
Cat6k-2(config)# clock calendar-valid



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