Me? Sadistic? Nnnnnaaaaahhhhh. :) Bear with me because I don't have this stuff in front of me, but I seem to recall that in the PG with this lab, there is a note about the filtering not working because of the virtual link. Or you can configure it, but it won't work as expected. As for the mulitple ABRs, you can summarize on both or just on one. Watch your OSPF database and see what affect it will or will not have by adding the filter to both. As for the two prefixes, if it only lists two, then others are not to be filtered. I don't recall the specifics of the question to comment more though. Scott
_____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Con Spathas Sent: Thursday, June 07, 2007 2:42 PM To: [email protected] Subject: [OSL | CCIE_RS] WB9.0 Lab 5 Section 14 Hi Group, Please be gentle - I tend to ask many silly questions in my quest to understand I've just completed the OSPF Lab 5 from the WB and have been through the Proctor notes - I was happy to see my solution was correct but I'm also a little confused. Section 14 stated that Area 246 shouldn't see specific routes originated from Area 57. My solution was to create prefix-lists on R2 and R6 and then use a filter-list to block them, however the Proctor guide says this only needed to be done on R2 as it's the ABR for Area 246. My question is that because we used a virtual-link between R2 and R6 to join discontiguous Area 0 - wouldn't that then also make R6 an ABR for Area 246? If I removed the filter-list on R6, then R4 would learn Area 57 originated routes from R6 thus not satisfying the requirements. One other thing - the Proctor guide only stipulates prefixes '7.7.7.0/24 le 32' and '150.50.57.0/24 le 32' be filtered, however R5 also advertises 51.5.5.5/24 (Lo1) into Area 57 - so my solution also included this subnet in my deny prefix-lists. I've been told from a reliable source that Scott Morris can be quite sadistic with the labs ;-) so maybe I'm overlooking something here. I have seen the Proctor guide pick up on subtle problems in earlier labs - however in this case it doesn't appear to say anything about R6 being an ABR also. Thanks for your time and patience. Con.
