First of all - thanks about kind words about the lab. Secondly, the thing about IPs and templates - that's not very widely known thing and I think you just caught one of the errors in our labs. Whenever virtual-template is used for more than one connection, it shouldn't have IP address defined. I'll see that we correct the solution there.
About inverse ARP - if your router has learned the dynamic mapping, it will not forget it when you disable inverse ARP. There is a solution that doesn't involve router reload, but trust me when I say that the simplest solution to get rid of it/them is to save the config and reload. The other solution will take you longer time and you may end up making mistakes. I'll gladly repeat it below, but you may search the archives where I detailed it. -- Marko Milivojevic - CCIE #18427 Senior Technical Instructor - IPexpert YES! We include 400 hours of REAL rack time with our Blended Learning Solution! Mailto: [email protected] Telephone: +1.810.326.1444 Fax: +1.810.454.0130 Web: http://www.ipexpert.com/ On Sat, Mar 27, 2010 at 19:11, Mark Beynon <[email protected]> wrote: > First things first, great lab! I am only a few labs in to vol1 but > already appreciate the quality. There are a couple of things I could > do with some clarity on... Appreciate any ones time. > > First thing. > The solution to one task was to use a virtual template, assign it to > both dlci's, add chap authentication, and enable ppp multink. The same > virtual template is then used on single dlci's to other routers. > > This is all fine. The one query I have involves the ip addressing. The > solution assigns the ip address to the virtual template. Having > listened to Marko on the AoD, in the ip addressing section, he > describes that assigning the ip address to the virtual template, that > is used for multiple clients would create multiple virtual access > interfaces , and hence conflicting idb's. Which is a bad thing. > > I hence went along trying to address the virtual template with ip > unumbered from a loopback. > > In the end had to peek at DSG. > > Question is why is it okay in this scenario? > > Next, hopefully simpler. When you disable inverse arp, I understand > that the router will not send out inverse arp requests, but it will > still respond. However I wouldn't expect it to learn dynamic mappings. > In this lab I observed an interface still learning a dynamic mapping > whilst no inverse arp on that interface. Is that expected.? > > Thanks _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
