Failover Configuration

[Nathan McDavit-Van Fleet]

Okay, I assigned them both to port 647 and did a tcpdump. 

It appears as if the primary is successfully contacting the secondary. About
once a second I see traffic from the primary going to the secondary. If I
tcpdump on the secondary it shows that it's receiving the packet. 

Is this sane? Should the secondary be doing anything? 

How does this affect the actual startup of the service?

Also, I realized I wasn't denying bootp requests. Does this affect the
startup of the server?

Thanks,

Nathan Van Fleet
Telecommunications Analyst
Network Assessment and Integration
IITS Concordia University
(514) 848-2424 Extension:5434
 

> -----Original Message-----
> From: dhcp-users-bounces+nmcdavit=alcor.concordia.ca at lists.isc.org
> [mailto:dhcp-users-bounces+nmcdavit=alcor.concordia.ca at lists.isc.org]
> On Behalf Of sthaug at nethelp.no
> Sent: Tuesday, November 09, 2010 3:16 PM
> To: dhcp-users at lists.isc.org; frisvolj at lafayette.edu
> Subject: Re: Failover Configuration
> 
> > > It sure sounds like your failover peers aren't communicating. I
> would
> > > suggest you run tcpdump/wireshark to see that the servers actually
> are
> > > able to talk to one another. You should see TCP traffic between
> port
> > > 647 on the one server and port 847 on the other.
> >
> > There seems to be no real reason to use different ports.  I suggest
> > making life easier and just use the same port on both servers.
> 
> Agreed, that's what we do for our failover configuration here.
> 
> Steinar Haug, Nethelp consulting, sthaug at nethelp.no
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