Getting failover: link startup timeout

Kraishak Mahtha kraishak.edu at gmail.com
Sun Jun 18 05:38:45 UTC 2023


Thank you  *Glenn Satchell and * *Bob McDonald *for suggestion, will try
that way

On Thu, Jun 15, 2023 at 6:24 PM Kraishak Mahtha <kraishak.edu at gmail.com>
wrote:

> Hi All,
> I am using the ISC  dhcp failover and I am getting continuous failover:
> link startup timeout error on both the appliances, not sure what is the
> issue, I checked the following
> 1)port 647(my failover) is open and I can see the tcpdump traffic between
> both servers
> 2)ntp is in sync
> 3)Both are able to ping each other
>
> but here I have a bit of a different use case, for some of the subnets I
> assigned Server A as primary, and for other subnets, I assigned Server B as
> primary.
>
> Server A-- Server B --> Failover f1
> Server B --Server A --> Failover f2
> Now let's say I have 10 subnets, so for the first 5, I used f1 as a
> failover peer, and for the other 5 subnets I used  f2 as a failover peer.
> so basically in a single server config, we will have two failover peers in
> the first section of config server A will be declared as primary, and in
> the second section it will declare as failover like
>
> failover peer "peer-1" {
>         primary;
>         address 10.1.10.246;
>         port 647;
>         peer address 10.1.10.247;
>         peer port 647;
>         max-response-delay 30;
>         max-unacked-updates 30;
>         load balance max seconds 3;
>         mclt 1800;
>         split 128;
> }
>
> failover peer "peer-2" {
>         secondary;
>         address 10.1.10.246;
>         port 647;
>         peer address 10.1.10.247;
>         peer port 647;
>         max-response-delay 30;
>         max-unacked-updates 30;
>         load balance max seconds 3;
> }
> Apart from this, the other config is a normal one with few subnets and
> basic options.
>
> I think the above config is valid only because nowhere it gave the syntax
> error at compile time and also at run time and dhcpd is up and running, but
> the failover peer states
> for f1 --> it is showing normal-normal but for f2 --> it is
> showing recover and unknown-state and sometimes it is showing partner-down
> and shutdown
>
>
>  I have a doubt
> Can we configure the same server as the primary for f1 and failover for f2
> for another failover peer? I hope that is a valid one because nowhere do I
> see the docs saying that is valid (in my Google search)
>
> Can someone who has familiar with such setups and face similar issue can
> guide me
>
> Thanks in Advance
>
>
>
>
>
>
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