OSPF – Networking & Security

Cross Vcenter NSX with OSPF

3 Dec 201820 Dec 2018 by Farhan Patel, posted in VMware NSX

References: Cross Vcenter NSX Design Guide https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/products/nsx/vmware-multi-site-solutions-cross-vcenter-nsx-design-guide.pdf Intra area routes versus inter area routes https://blog.ipspace.net/2008/01/e1-and-e2-routes-in-ospf.html In one of the earlier posts, we have covered running OSPF in NSX domain. Here we try to cover running OSPF in a Cross Vcenter NSX setup. In the above topology: 1. There are two NSX managers. Primary NSX manager … Continue reading Cross Vcenter NSX with OSPF

OSPF NSSA

30 Aug 201820 Dec 2018 by Farhan Patel, posted in Routing

In the topology above, routers R1 and R2 are the ABRs interfacing with backbone area 0 Area 1 in this topology has been configured as NSSA this time. My earlier topology referenced a Totally NSSA area. As mentioned earlier, NSSA configuration in OSPF allows redistribution to occur within the NSSA area. … Continue reading OSPF NSSA

OSPF Routing Protocol in NSX

24 Jun 201820 Dec 2018 by Farhan Patel, posted in VMware NSX

OSPF NSX The above topology illustrates OSPF Totally NSSA setup in NSX domain. Distributed logical router is handling east-west traffic within the data center while the edges E1 and E2 are handling north-south traffic. Edges E1 and E2 are configured in ECMP mode which allows more bandwidth to flow … Continue reading OSPF Routing Protocol in NSX

Totally NSSA Area – OSPF

10 Jun 201820 Dec 2018 by Farhan Patel, posted in Routing

This blog will discuss the benefits derived by configuring OSPF area type as Totally NSSA OSPF Area type NSSA and Totally NSSA both allow redistribution within the NSSA area. Such redistribution creates Type 7 LSAs which are converted to Type 5 LSA by the ABR. Referencing the topology above, R1 or R2 which serve as … Continue reading Totally NSSA Area – OSPF

OSPF Area Border Connection Behavior

16 Dec 20152 Jan 2019 by Farhan Patel, posted in Network Design

OSPF Area Border Connection Behavior Reference: Designing Cisco Network Service Architectures ARCH Foundation Learning Guide - Cisco Press In the case of OSPF, area definition is on a per layer 3 interface basis. For example, referencing the topology above, the link between router D and router F is placed in area 1 Traffic crossing the … Continue reading OSPF Area Border Connection Behavior