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I at one time was working on implementing a quagga ospfd + keepalive
configuration with the VRRP running on the 'internal' interface and ran
into problems.
In my case traffic would still try to flow across the old VIP holder and it
seemed that the internal hosts kept the arp of the old VIP. Also I have
real IPs on the inside as well.
I'm still not sure how to notify ospfd of the VIP change (announce the
network change into OSPF on the 'outside'). Should redistribute connected
be used (if so how?), or a script to change the ospf priority value (again
not sure how to implement the script) or have keepalived run a script to
bringup/shutdown ospfd or use different ospfd configs for the VIP?
Anyhoo, it's been some time since I last tried to do this and it seems like
it's time to try again (I was running quagga 0.92 and keepalive 1.1.1). If
those who've worked though these issues could provide some insight, I'm sure
many people would be very grateful.
Thanks,
Jim
> -----Original Message-----
> From: lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx
> [mailto:lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx]On Behalf Of Nick
> Burrett
> Sent: Friday, February 13, 2004 4:22 AM
> To: LinuxVirtualServer.org users mailing list.
> Subject: Re: Keepalived and Zebra
>
>
>
>
> mtawafig wrote:
> > Hi
> > Anyone with a pointer on a setup for a failover router using zebra and
> > keepalived .
> > Any help is appretiated
>
> This is quite straightforward. You use keepalived to create a virtual
> gateway between interfaces on two different routers.
>
> Zebra on router1:
> interface eth0
> ip address 10.0.0.2/24
>
> Zebra on router2
> interface eth0
> ip address 10.0.0.3/24
>
> If you're using OSPF then have the following on both routers:
>
> router ospf
> network 10.0.0.0/24
>
> Then configure keepalived with something similar to:
>
> vrrp_instance {
> state MASTER
> interface eth0
> garp_master_delay 5
> virtual_router_id 1
> advert_int 2
> priority 150
> virtual_ipaddress {
> 10.0.0.1/24
> }
> }
>
> On router2, use BACKUP and 100 for state and priority.
>
> The default gateway on any servers on this subnet should be set
> to 10.0.0.1.
>
> I have yet to find a copy of keepalived that successfully delt with
> MASTER-MASTER arbitration though.
>
> Hope that helps,
>
>
> Nick.
>
>
> --
> Nick Burrett
> Network Engineer, Designer Servers Ltd. http://www.dsvr.co.uk
>
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