imhungry Posted December 6, 2023 Share Posted December 6, 2023 Based on the dump shared by enterprise. I think the answer in 1.7 may not be complete. The last two points in the question: There must be no type 2 LSA in any of the router LSDBs at Global SP #1 This is handled in the answer, point-to-point ensures that no type 2 LSAs are required to build the graph. The LSAs in Global SP #1 must not contain information about any transit links I think this may be asking for prefix suppression? Setting the network type to point-to-point does not remove transit link information from the type 1 LSAs. Prefix suppression is needed for that. 2 Link to comment Share on other sites More sharing options...
FriKKiE Posted December 11, 2023 Share Posted December 11, 2023 Agreed. Prefix suppression needs to be enabled on each router in Global ISP. 1 Link to comment Share on other sites More sharing options...
Anncc Posted January 4 Share Posted January 4 On 12/6/2023 at 10:04 PM, imhungry said: Based on the dump shared by enterprise. I think the answer in 1.7 may not be complete. The last two points in the question: There must be no type 2 LSA in any of the router LSDBs at Global SP #1 This is handled in the answer, point-to-point ensures that no type 2 LSAs are required to build the graph. The LSAs in Global SP #1 must not contain information about any transit links I think this may be asking for prefix suppression? Setting the network type to point-to-point does not remove transit link information from the type 1 LSAs. Prefix suppression is needed for that. you are correct. basicly type 2 LSA is generated by DR to describe all routers connected to its segment directly handeling DR and BDR . so ptp ist must. to have no transit info you need to activate Prefix suppression. it recomended to di it at the end as it make it harder to T-shoot in case of some problem. 1 1 Link to comment Share on other sites More sharing options...
FriKKiE Posted January 17 Share Posted January 17 (edited) On 1/4/2024 at 10:04 AM, Anncc said: it recomended to di it at the end as it make it harder to T-shoot in case of some problem. #ProTip that! Thanks @Anncc 🫡 Also, the Prefix Suppression is enabled on each interface participating in OSPF - not on the router like I said before. Edited January 17 by FriKKiE Link to comment Share on other sites More sharing options...
imhungry Posted January 17 Author Share Posted January 17 What is your thinking around enabling prefix suppression on a per-interface basis, rather than in the ospf process configuration? Link to comment Share on other sites More sharing options...
Anncc Posted January 19 Share Posted January 19 it take longer and in exam trust me you need every minutes. Link to comment Share on other sites More sharing options...
FriKKiE Posted January 21 Share Posted January 21 This is the hidden content, please Sign In or Sign Up Watched a Kbits vid and he did it that way - hence i said it but you make a valid point - there isn't a specific reason. Looking at the link above, IF there are loopbacks being advertised that we may need to reach within ISP1(for ping, ssh,SLA,etc ), if you globally enable it, you may not reach them(and will have to disable it for said interfaces). So, until we have the full configs or sit for the exam, it could be either or. My 2c. 40 8 1 Link to comment Share on other sites More sharing options...
Himura Posted March 15 Share Posted March 15 Hi @imhungry. Where did you find the preconfig of each device to start the practice ?? I downloaded the same link from @enterprise , however, all devices are with no config. Regards. Link to comment Share on other sites More sharing options...
imhungry Posted March 17 Author Share Posted March 17 I used the 1.0 configs. For these questions the old configs aren’t too far off. You don’t really need the config for my comment though. Link to comment Share on other sites More sharing options...
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