Multiple VDS' for Overlay on compute hosts This use case is also referenced in NSX-T Reference Design Guide which mentions that starting with NSX 3.1, a host can have virtual switches part of different overlay transport zones and the TEPs on each virtual switch can be on different VLAN/IP subnets (still, all the TEPs … Continue reading Multiple VDS’ on host for Overlay on compute hosts
Category: Routing
NSX-T VRF Gateway
VRF Gateway feature in NSX-T is similar to VRF lite feature in physical networks in the following ways: Just like there is no need of another physical router for a separate routing instance using VRF lite feature, there is no need to deploy additional edges in case of NSX-T VRF gateways. This drastically reduces the … Continue reading NSX-T VRF Gateway
OSPF NSSA
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
Totally NSSA Area – OSPF
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
IP Routing Process
IP routing process is a fundamental concept in networks. Having a clear understanding of IP routing process helps network engineers troubleshoot complex network problems. A good hold of this concept also helps determine end to end traffic flow from any given source IP towards target IP. Below are key steps when traffic from source tries … Continue reading IP Routing Process
OSPF – Auto Cost Reference Bandwidth feature in Cisco IOS
In the case of OSPF, the OSPF metric – Cost is inversely proportional to interface bandwidth. Meaning, the higher bandwidth link on your device will have lower cost. But OSPF by default is unable to differentiate the cost properly for a device that has both TenG and Gig interfaces. The reason why OSPF is … Continue reading OSPF – Auto Cost Reference Bandwidth feature in Cisco IOS
Networking & Security 