p b wrote: > > > Actually using secondaries and DHCP should be a non issue with > any reasonable DHCP server platform. As you mention, in many > versions of IOS the interface's primary IP address is used > as the DHCP giaddr. If an interface has multiple secondaries, > one just needs to configure the DHCP server to be aware that > there are multiple scopes associated with the giaddr.
But how does the server know which scope to use for the incoming requests when they all have the same giaddr? Priscilla > > The use of secondaries and the DHCP server logic to understand > what scopes are associated with an interface is a useful feature > when one might need to renumber users from one subnet to > another. > Or if one runs out of IP addresses on an existing subnet, one > can simply add on a secondary subnet onto the interface and DHCP > server without causing everyone to be renumbered. > > > Darren S. Crawford wrote: > > > > Secondarys will really hurt you in a DHCP environment. The > > workstations on > > the secondary subnet will get their DHCP request forwarded > with > > a source > > segment of the initial IP address on the interface. This was > > good ammo for > > me when I was in the same boat. > > > > HTH > > > > Darren > > > > At 10:52 PM 12/3/2002 +0000, Edward Sohn wrote: > > >Thanks to all for the responses to my VPN connections. > > > I have pretty much verified it will work in an > > >"active/failover" setting... > > > > > >Now, I have an issue where I need to convince my > > >customer that it's better to subinterface a fast > > >ethernet port into two separate VLANs rather than add > > >secondary IP addressing on the router. > > > > > >Now, from my understanding I thought that secondary IP > > >addressing is "traditionally" not recommended. I > > >thought I read somewhere that it creates instability > > >for both networks and increases traffic. Now, I'm not > > >certain, so correct me if I'm wrong. > > > > > >Thanks, > > > > > >Ed > > > > > >__________________________________________________ > > >Do you Yahoo!? > > >Yahoo! Mail Plus - Powerful. Affordable. Sign up now. > > >http://mailplus.yahoo.com > > +++++++++++++++++++++++++++++++++ > > International Network Services > > Darren S. Crawford - CCNP, CCDP, CISSP > > Sr. Network Systems Consultant > > Northwest Region - Sacramento Office > > Voicemail (916) 859-5200 x310 > > Pager (800) 467-1467 > > mailto:[EMAIL PROTECTED] > > +++++++++++++++++++++++++++++++++ > > > > Every Job is a Self-Portrait of the person Who Did > > It...Autograph Your Work With EXCELLENCE! > > > > > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=58513&t=58498 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
