Hi, in Harry Reynolds JNCIP Book, page 202 of 708 is the ospf multi-area picture. page 217 of 708 mentions summarization using area-range.
Is there a reason why the lsa-id in area 0 is 10.0.8.0 but is 10.0.9.255 in area 10 ? It's interesting that the subnet-id of the /23 is used as the lsa-id in area 0 but the bcast address of the /23 is used as the lsa-id in area 10. Is there a technical reason for the change in lsa-id as that summary flows through ospf areas? When I do this on r5. r5@lab-mx104:r5# set protocols ospf area 1 area-range 10.0.8.0/23 .I see this on r3.. r3@lab-mx104:r3> show ospf database area 0 netsummary lsa-id 10.0.8.0 detail OSPF database, Area 0.0.0.0 Type ID Adv Rtr Seq Age Opt Cksum Len Summary 10.0.8.0 10.0.3.5 0x80000471 934 0x22 0x4360 28 mask 255.255.254.0 Topology default (ID 0) -> Metric: 2 .but I see this on r1.. r1@lab-mx104:r1> show ospf database netsummary area 10 lsa-id 10.0.9.255 detail OSPF database, Area 0.0.0.10 Type ID Adv Rtr Seq Age Opt Cksum Len Summary 10.0.9.255 10.0.3.3 0x80000001 967 0x20 0x59c0 28 mask 255.255.254.0 Topology default (ID 0) -> Metric: 3 Summary 10.0.9.255 10.0.3.4 0x80000001 968 0x20 0x53c5 28 mask 255.255.254.0 Topology default (ID 0) -> Metric: 3 r1@lab-mx104:r1> JNCIP Book. https://www.juniper.net/assets/us/en/local/pdf/study-guide/study-guide-jncip .pdf Thanks, Aaron _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp