Hi Khaled, First, if you put your questions that are different from the main thread in a new thread it will help everybody. It is easier to find if needed later, and if other people are reading the topics, it is easier for them as well. At any rate, I like the way you think, but the question does not say "only" RIP routers. It just says RIP routers.
Secondly, with RIP summarization I believe that in order to create the summary route and advertise it in RIP at least one of the routes must be in the routing table as a RIP route. In this case those are EIGRP routes. I need to lab this up to verify (or if anybody else does let me know) but that seems to be the case according to the following docs: http://www.cisco.com/en/US/docs/ios/12_2/ip/configuration/guide/1cfrip.html#wp1001151 "The *ip summary-address rip* router configuration command causes the router to summarize a given set of routes learned via RIP Version 2 or redistributed into RIP Version 2. " 2009/7/22 khaled Saholy <[email protected]> > > Thanks Joe for your clarification. > > Another small question, > In task 3.7, the question asks for RIP routers to see a single summary > route for routes coming from BB2. By doing summarization into EIGRP for the > path toward RIP > ,not only RIP routers will see the summary only for routes from BB2 , but > EIGRP routers as well will only see the summary while in the question asked > for RIP routers only? > > Shouldn't it be done on CAT1 and on R7 facing RIP domain? > > Should I be more specific about the solution? > > I hope my explanation is clear. > > I appreciate your kind support. > > Khaled Al-Saholy > > ------------------------------ > Date: Wed, 22 Jul 2009 15:40:39 -0400 > Subject: Re: [OSL | CCIE_RS] VOL3 LAB7 OSPF Filtering - question to the > experts > From: [email protected] > To: [email protected] > CC: [email protected]; [email protected] > > > Yes. In a link-state protocol like OSPF the link-state database must be > identical on all the routers in an area. Therefore, when you use the > distribute-list in command in OSPF what actually happens is you filter > between the OSPF database and the RIB. The router still gets the > information and has it in the link-state database. > > On Wed, Jul 22, 2009 at 3:39 PM, Bodnar, Edward > <[email protected]>wrote: > > Ill have to check this out. Thanks Joe. > > So I guess technically a distribute-list prevents routs from getting into > the rib not from the router receiving them? > > Ed, > > > > *From:* Joe Astorino [mailto:[email protected]] > *Sent:* Wednesday, July 22, 2009 3:35 PM > *To:* Bodnar, Edward > *Cc:* khaled Saholy; [email protected] > *Subject:* Re: [OSL | CCIE_RS] VOL3 LAB7 OSPF Filtering - question to the > experts > > > Guys be extremely careful with the distribute-list command in OSPF. Check > out this FAQ from Cisco for more information. Remember, it is link-state so > the LSDB must be the same across the area! > > > http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a0080094704.shtml#q12 > On Wed, Jul 22, 2009 at 3:28 PM, Bodnar, Edward <[email protected]> > wrote: > I would say as long and you look in your route table and you only see odd > routs then your ok. As long as they are not requiring you to use a > “prefix-list” you can do anything that works. > > I always try to do the easy way unless I am forced not to. Standard ACL’s > matched with distribute-list are what I use unless I have a reason not to. > > Ed, > > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *khaled Saholy > *Sent:* Wednesday, July 22, 2009 3:23 PM > > *To:* [email protected] > *Subject:* [OSL | CCIE_RS] VOL3 LAB7 OSPF Filtering - question to the > experts > > > Dear Experts, > I have some questions regading the VOL3 labs. So I'll start with lab7. > In lab 7 , task 3.5 , the task is asking for R9 to receive only even > routes from BB2 via serial 0/2/0 only and the odd routes via serial 0/2/1 > only. The solutions in the proctor guide has been configured in R6 with two > long prefix-lists. I did the configuration in R9 with the (distribute-list > in) with the access-lists and it gave me the same result. > > Is my solution correct ? > > Thanks for the reply in advance. > > Khaled Al-Saholy > > > > ------------------------------ > See all the ways you can stay connected to friends and > family<http://www.microsoft.com/windows/windowslive/default.aspx> > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > > > -- > Regards, > > Joe Astorino - CCIE #24347 R&S > Technical Instructor - IPexpert, Inc. > Cell: +1.586.212.6107 > Fax: +1.810.454.0130 > Mailto: [email protected] > > > > > -- > Regards, > > Joe Astorino - CCIE #24347 R&S > Technical Instructor - IPexpert, Inc. > Cell: +1.586.212.6107 > Fax: +1.810.454.0130 > Mailto: [email protected] > > ------------------------------ > With Windows Live, you can organize, edit, and share your > photos.<http://www.microsoft.com/middleeast/windows/windowslive/products/photo-gallery-edit.aspx> > -- Regards, Joe Astorino - CCIE #24347 R&S Technical Instructor - IPexpert, Inc. Cell: +1.586.212.6107 Fax: +1.810.454.0130 Mailto: [email protected]
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